GREATPLANES Cherokee Manual
Contents
1. cece cccceeeeeseeeeseeeeeeesaeeeeeeeees 4 Optional Supplies amp Tools scaicscccnacecsadcnwduancisiss Sse uivanandvadsendueeancuelseasd 4 BUILDING STAND 0 0ccccccccccccceeeeeseeaeaaeeeeeeeeeeeeeeeeeeeeeeeeeeneas 5 IMPORTANT BUILDING NOTEG 0cccccccceceeeeeeeeeeaeeeaeeeees 5 ORDERING REPLACEMENT PARTS cccccccceseseaeeeseeeeeeees 5 COMMON ABBREVIATIONS 000 00ccccececeeeeeeeeeeeeaeeaeeeaeeeees 6 METRIC CONVERSIONS 000 o ce ccecceeseseeseeseeeeeeeeeeeeeeeeeeeeas 6 METRIC INCH RULER cccccccccecseseeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeas 6 KIT INSPECTION 0 cccecccceeceeecceeseccecanesssseeseseceeeeeeeeseeseeees 7 BUT COIN TEIN Stes cieetcesiis see tectisetots sun deaibeueitudnn deeb gue eaa ra aa Eea i ia eE 7 PREPARATIONS 0 0i o 0 cc0scssesesesenicniccecersconsasecnteceseusesedsnerssnneseecenercnesl 8 BUILD THE WING PANELS 000000 cc cccceceeeeeeeeeeeeeeeeeeeeeeeeeeeas 8 Install the Aileron amp Flap Servos amp PuShrods ccccceeeeeeeees 8 Fed Flaps sasini ee aE E EEE ER 11 BUILD THE FUSELAGE 00 0 cc cccceseeeeeeeeeeeeeeeeeeeeeeeeaeeaas 11 Install the Tail SUMACCS vs wiaccrderincenevirrecmorasnivenncrunnwecwilehowannvecud dats 11 Install the Tail Servos amp PUSNIOdS ccccceceeeeeseseeeeeeeneeeeeees 12 Glow Engine IisStalatO Wcccsascscsicanchctedsdsvousnaneracduvsemnabsrendvucnnaksseban 132. O 10 20 30 40 50 60 70 80 90 Metric Scale 100 110 120 1380 140 150 160 170 180 KIT INSPECTION Before starting to build take an inventory of this kit to make sure it is complete and inspect the parts to make sure they are of acceptable quality If any parts are missing or are not of acceptable quality or if you need assistance with assembly contact Product Support When reporting defective or missing parts use the part names exactly as they are written in the Kit Contents list Great Planes Product Support 3002 N Apollo Drive Suite 1 Champaign IL 61822 Telephone 217 398 8970 ext 5 Fax 217 398 7721 E mail airsupport greatplanes com KIT CONTENTS KIT CONTENTS Cowl 2 1 2 64mm Wheels 3 Fuselage Aluminum Wing Joiner Tube Spinner Horizontal Stabilizer amp Elevator Fuel Tank Vertical Fin amp Rudder Engine Mount Right Wing Panel w Flap amp Aileron Main Landing Gear L amp R Left Wing Panel w Flap amp Aileron Nose Gear Wire Nose Wheel Pant Main Wheel Pants L amp R OONDOOAaFRWDND PREPARATIONS J 1 If you have not done so already remove the major parts of the kit from the box and inspect for damage If any parts are damaged or missing contact Product Support at the address or telephone number listed in the Kit Inspection section on page 7 J 2 Carefully remove the tape and separate all the components Use a covering iron with a covering sock on med
3. E 1 3 Cut three arms from a four armed servo arm and enlarge the outer hole of the remaining arm with a 5 64 2mm drill bit Center the elevator servo with your radio system and install the servo arm onto the elevator servo as shown Mount the elevator servo next to the rudder servo with a gap of approximately 1 4 6mm between the tips of the servo arms Leave enough room for the throttle servo RUDDER CONTROL HORN a A J 4 Thread a nylon clevis 20 complete turns onto a 36 914mm pushrod Slide a silicone clevis retainer onto the clevis and connect the clevis to the third outer hole of the rudder control horn As you did with the aileron and flap pushrods use tape or a small clamp to hold the rudder in the neutral position Make a mark on the pushrod where it crosses the outer hole in the servo arm Make a 90 bend at the mark on the pushrod and cut off the excess pushrod 1 4 6mm beyond the bend Attach the pushrod to the servo arm using a nylon FasLink Thread the clevis up or down on the pushrod as necessary to center the rudder with the servo arm perpendicular to the servo case When satisfied slide the silicone clevis retainer to the end of the clevis to secure it J 5 Install the elevator pushrod in the same manner The clevis on the elevator pushrod should attach to the outer hole in the elevator control horn 13 Glow Engine Installation The Cherokee 40 ARF is designed to be flown with a 40 to
4. d 3 Install your receiver switch and charge jack onto the sides of the fuselage Confirm that the location of your switch and charge jack will not interfere with the wing bolts when installed STRAIN RELIEF INSIDE FUSELAGE h W _J 4 Install a strain relief onto the receiver antenna to protect the solder joint that secures it inside the receiver A strain relief can be made by cutting off the end of an unused servo arm and stitching the antenna through two holes in the arm as shown Route the antenna through the antenna tube and out the aft end of the fuselage Install the Cowl Spinner amp Propeller J 1 Before fitting the cowl make any cutouts necessary for your power system If you are installing a glow engine a cutout must be made for the engine head exhaust outlets and needle valve access Templates should be made and taped to the fuselage to accurately create the necessary cutouts in the cowl A rotary tool such as a Dremel works very well for cutting holes in fiberglass l 2 Apply some strips of masking tape onto both sides of the fuselage just behind the firewall Mark onto the tape the location of the center of the cowl mounting blocks 21 l 3 Fit the cowl to the fuselage and align it with the colors on the fuselage When satisfied with the fit tape the cowl into position Measure 3 8 9 5mm forward from the aft end of the cowl at each mark you made on the masking tape Mark the cowl for each
5. Airplanes link then select the Cherokee 40 ARF If there is new technical information or changes to this model a tech notice box will appear in the upper left corner of the page We urge you to join the AMA Academy of Model Aeronautics and a local R C club The AMA is the governing body of model aviation and membership is required to fly at AMA clubs Though joining the AMA provides many benefits one of the primary reasons to join is liability protection Coverage is not limited to flying at contests or on the club field It even applies to flying at public demonstrations and air shows Failure to comply with the Safety Code excerpts printed in the back of the manual may endanger insurance coverage Additionally training programs and instructors are available at AMA club sites to help you get started the right way There are over 2 500 AMA chartered clubs across the country Contact the AMA at the address or toll free phone number below Academy of Model Aeronautics b 5151 East Memorial Drive Muncie IN 47302 9252 Tele 800 435 9262 Fax 765 741 0057 Or via the Internet at http www modelaircraft org SINCE 1936 IMPORTANT Two of the most important things you can do to preserve the radio controlled aircraft hobby are to avoid flying near full scale aircraft and avoid flying near or over groups of people PROTECT YOUR MODEL YOURSELF amp OTHERS FOLLOW THESE IMPORTANT SAFETY PRECAUTIONS 1 Your Ch
6. 46 two stroke glow engine 56 four stroke glow engine ora brushless out runner motor If you plan to install a brushless motor skip this section as it only contains information relevant to installing a glow engine Note This section shows photos of a two stroke engine being installed The procedure for installing a four stroke engine is the same Be sure to maintain the correct drive washer distance as detailed in this section J 1 The fuel tank can be assembled as a two line system consisting of a vent pressure line to the muffler and a carb line Filling and emptying of the tank would need to be done through the carb line or an optional fuel fill valve not included The tank can also be assembled as a three line system having a vent line carb line and fill line If installing a fill line puncture the top of the stopper above the sealed off fuel tube hole The fill and carb lines should extend out 1 2 18mm beyond the stopper and the vent line should be bent upwards and left uncut With the tubes installed in the stopper fit the stopper plates loosely in place with the 3 x 25mm Phillips screw to hold the assembly together Top of tank Fill and carb lines J 2 Fit the stopper assembly into the tank with the vent line pointing toward the top of the tank but not touching The fuel tubing and clunks fuel pickup on the carb and fill lines should almost reach the back of the tank but not touch The clun
7. INSTRUCTION MANUAL Wingspan 60 in 1520mm Wing Area 606 in 89dm Weight 6 75 7 25 lb 3060 3290g Wing Loading 26 28 oz ft 79 85g dm Length 46 in 11 70mm Radio 4 channel minimum with four to seven standard servos and standard size receiver Engine 40 46 cu in 7 7 5cc two stroke 56 cu in 9 2cc four stroke 42 50 800kV brushless out runner motor WARRANTY Great Planes Model Manufacturing Co guarantees this kit to be free from defects in both material and workmanship at the date of purchase This warranty does not cover any component parts damaged by use or modification In no case shall Great Planes liability exceed the original cost of the purchased kit Further Great Planes reserves the right to change or modify this warranty without notice In that Great Planes has no control over the final assembly or material used for final assembly no liability shall be assumed nor accepted for any damage resulting from the use by the user of the final user assembled product By the act of using the user assembled product the user accepts all resulting liability If the buyer is not prepared to accept the liability associated with the use of this product the buyer is advised to return this kit immediately in new and unused condition to the place of purchase To make a warranty claim send the defective part or item to Hobby Services at the address below Hobby Services 3002 N Apollo Dr
8. Suite 1 Champaign IL 61822 USA Include a letter stating your name return shipping address as much contact information as possible daytime telephone number fax number e mail address a detailed description of the problem and a photocopy of the purchase receipt Upon receipt of the package the problem will be evaluated as quickly as possible READ THROUGH THIS MANUAL BEFORE GREAT PLANG STARTING CONSTRUCTION IT CONTAINS E IMPORTANT INSTRUCTIONS AND WARNINGS MODEL MANUF AN CONCERNING THE ASSEMBLY AND USE OF Sambal unos THIS MODEL 217 398 8970 Ext 5 airsupport greatplanes com Entire Contents Copyright 2008 GPMZ1033 for GPMA1033 V1 0 TABLE OF CONTENTS INTRODUCTION ccccccccccceccecccceesessssssssseseceeeeesenecesseesensasaasass 2 AMA ne E ee ee eee 2 SAFETY PRECAUTIONS 0 0000ccccccecceeeeeeeesaeeaseeeeeeseeeeeeeeeees 2 DECISIONS YOU MUST MAKE cccccccceeeeeeceeeeeeeeeeeeeeeeeeeeeees 3 Radio EQUI DIM OM sce capanaaecsncenassesiivicstadecocupdiectnasunonitdiedbuiedaanddbiledbuadedeins 3 Power System Recommendations cccccecseseeeeeeeeesseeseeeeeeeeees 3 PODON T e e R E 4 Batteries amp CVAI OG lictcrh cones txwadsGsunstacasanstinecivsnniusGduaskavaunentixe cea tameo 4 ADDITIONAL ITEMS REQUIRED 0 0 ec cccceeseeeeeeeeeeeeeees 4 Required Hardware amp Accessories cccccccssssseeeeeeeeeesaeaeeeeeees 4 Adhesives amp Building SUPDIICS
9. not included to secure the ESC to the mounting tray J 4 Make two 12 305mm long hook and loop straps from the included hook and loop material by overlapping the mating ends of each side by approximately 2 51mm Insert the straps into the slots in the plywood fuel tank tray as 17 shown The fuel tank tray is also used as the battery tray for a brushless installation 2 x 1 2 mMm SCREWS ss J 5 Fit the fuel tank tray into the fuselage by inserting the tab at the forward end of the tray into the slot in the firewall Press the tray down onto the receiving tabs in the fuselage former and cross brace Drill two 1 16 1 6mm holes through the tray and into the hardwood mounting blocks Secure the tray in place using two 2 x 1 2 13mm screws and two 2 flat washers being sure to harden the screw holes with thin CA 13mm l 6 Drill a hole in the firewall for the battery lead from the ESC and the receiver lead Attach the motor mount to the firewall using four 6 32 x 1 2 13mm SHCS four 6 flat washers four 6 lock washers and threadlocking compound Connect the motor leads on the ESC to the motor Be sure that the leads will not interfere with the rotation of the motor J 7 Apply the hook side from self adhesive hook and loop material not included to the top of the fuel tank tray A thin coat of epoxy on the tray will improve the adhesion of the hook material Apply the mating loop material to the bo
10. or lift it upside down at the balance point you marked J 3 If the tail drops the model is tail heavy and the battery pack and or receiver must be shifted forward or weight must be added to the nose to balance If the nose drops the model is nose heavy and the battery pack and or receiver must be shifted aft or weight must be added to the tail to balance If possible relocate the battery pack and receiver to minimize or eliminate any additional ballast required If additional weight is required nose weight may be easily added by using a spinner weight GPMQ4645 for the 1 oz 28g weight or GPMQ4646 for the 2 oz 57g weight If spinner weight is not practical or is not enough use Great Planes GPMQ4485 stick on lead A good place to add stick on nose weight is to the firewall don t attach weight to the cowl it is not intended to support weight Begin by placing incrementally increasing amounts of weight on the bottom of the fuselage over the firewall until the model balances Once you have determined the amount of weight required it can be permanently attached If required tail weight may be added by cutting open the bottom of the fuselage and gluing it permanently inside Note Do not rely upon the adhesive on the back of the lead weight to permanently hold it in place Over time fuel and exhaust residue may soften the adhesive and cause the weight to fall off Use 2 sheet metal screws RTV silicone o
11. Planes LiPo 3200mAh 11 1V 20C discharge w balance GPMP0623 J Great Planes Series Deans U 2 to 1 adapter GPMM3143 A cell balancer is required for the LiPo battery packs listed above J Great Planes ElectriFly Equinox LiPo cell balancer 1to 5 GPMM3160 A suitable charger is also required The Great Planes PolyCharge4 is designed for LiPo packs only however it is able to charge four LiPo packs simultaneously The Great Planes Triton2 charger will only charge one pack at a time however it is capable of charging NiCd NiMH LiPo and lead acid batteries Order numbers for both are provided below J Great Planes PolyCharge4 DC only 4 output LiPo charger GPMM3015 Ofr J Great Planes ElectriFly Triton2 DC comp peak charger GPMM3153 ADDITIONAL ITEMS REQUIRED Required Hardware amp Accessories This is the list of hardware and accessories required to finish the Cherokee 40 ARF Order numbers are provided in parentheses J R C foam rubber 1 4 6mm HCAQ1000 J 3 900mm standard silicone fuel tubing GPMQ4131 glow engine installation only Adhesives amp Building Supplies This is the list of Adhesives and Building Supplies that are required to finish the Cherokee 40 ARF J 1 2 oz 15g Thin Pro CA GPMR6001 J Pro 30 minute epoxy GPMR6047 l Masking tape TOPR8018 J Threadlocker threadlocking cement GPMR6060 J Denatured alcohol for epoxy clean up J Drill bits 1 16 1 6mm 5 6
12. flies and may determine whether or not your first flight will be successful If you value this model and wish to enjoy it for many flights DO NOT OVERLOOK THIS IMPORTANT PROCEDURE A model that is not properly balanced will be unstable and possibly unflyable At this stage the model should be in ready to fly condition with all of the systems in place including the engine or brushless motor landing gear and the radio system and battery pack if applicable J 1 Use a felt tip pen or 1 8 3mm wide tape to accurately mark the C G on the top of the wing on both sides of the 24 fuselage The C G is located 3 1 16 78mm back from the LE of the wing This is where your model should balance for the first flights Later you may wish to experiment by shifting the C G up to 7 16 11mm forward or 7 16 11mm back to change the flying characteristics Moving the C G forward may improve the smoothness and stability but the model may then require more speed for takeoff and make it more difficult to slow for landing Moving the C G aft makes the model more maneuverable but could also cause it to become too difficult to control In any case start at the recommended balance point and do not at any time balance the model outside the specified range l 2 With the wing attached to the fuselage all parts of the model installed ready to fly and an empty fuel tank place the model upside down on a Great Planes C G Machine
13. in Series to achieve the new desired Voltage NO NEVER connect batteries that have different capacities 3200mAh a Ss t E mi a a 11 1V 3 cell 2500mAh Different 23 J 1 Turn on the transmitter and receiver and center the trims If necessary remove the servo arms from the servos and reposition them so they are centered Reinstall the screws that hold on the servo arms J 2 With the transmitter and receiver still on check all the control surfaces to see if they are centered If necessary adjust the clevises on the pushrods to center the control surfaces 4 CHANNEL RADIO SETUP STANDARD MODE 2 ELEVATOR MOVES UP RIGHT AILERON MOVES UP LEFT AILERON MOVES DOWN RUDDER MOVES RIGHT FULL THROTTLE l 3 Make certain that the control surfaces and the carburetor respond in the correct direction as shown in the diagram If any of the controls respond in the wrong direction use the servo reversing in the transmitter to reverse the servos connected to those controls Be certain the control surfaces have remained centered Adjust if necessary Set the Control Throws to accurately Use a Great Planes AccuThrow or a ruler measure and set the control throw of each control surface as indicated in the chart that follows If your radio does not have dual rates we recommend setting the throws at the low rate settin
14. not to get glue onto the threads of the screws This will make the screws easier to work with at the flying field J 3 Fit the canopy hatch in place by inserting the two dowel pins into the receiving holes at the front of the hatch opening Use the two 4 40 x 5 8 16mm machine screws to secure the hatch in place 22 J 4 This completes the assembly of the Cherokee 40 ARF Apply the Decals 1 Use scissors or a sharp hobby knife to cut the decals from the sheet 2 Be certain the model is clean and free from oily fingerprints and dust Prepare a dishpan or small bucket with a mixture of liquid dish soap and warm water about one teaspoon of soap per gallon of water Suobmerse the decal in the soap and water and peel off the paper backing Note Even though the decals have a sticky back and are not the water transfer type submersing them in soap amp water allows accurate positioning and reduces air bubbles underneath 3 Position the decal on the model where desired Holding the decal down use a paper towel to wipe most of the water away 4 Use a piece of soft balsa or something similar to squeegee remaining water from under the decal Apply the rest of the decals the same way GET THE MODEL READY TO FLY Install amp Operate the Motor Battery Brushless Only IMPORTANT If using multiple battery packs that are connected with an adapter never charge the batteries together through the adapter Always cha
15. 002 N Apollo Drive Suite 1 Champaign IL 61822 Be certain to specify the order number exactly as listed in the Replacement Parts List Payment by credit card or personal check only no C O D lf additional assistance is required for any reason contact Product Support by e mail at productsupport greatplanes com or by telephone at 217 398 8970 Replacement Parts List Description How to Purchase Missing pieces Contact Product Support Instruction manual Contact Product Support Full size plans Not available Contact your hobby supplier for the following parts GPMA3240 Wing GPMA3241 Fuselage GPMA3242 Vertical Stabilizer amp Rudder GPMA3243 Horizontal Stabilizer amp Elevator GPMA3244 Canopy Hatch GPMA3245 Wheel Pants GPMA3246 Landing Gear GPMA3247 Cowl GPMA3248 Wing Tube GPMA3249 Decal Sheet Inch Scale 0 1 ll 2 3 COMMON ABBREVIATIONS Stab Horizontal Stabilizer Fin Vertical Fin LE Leading Edge TE Trailing Edge LG Landing Gear Ply Plywood Inches mm Millimeters SHCS Socket Head Cap Screw ESC Electronic Speed Control METRIC CONVERSIONS 1 25 4mm conversion factor 1 64 4mm 3 4 19 0mm 1 32 8mm 1 25 4mm 1 16 1 6mm 2 50 8mm 3 32 2 4mm 3 76 2mm 1 8 3 2mm 6 152 4mm 5 32 4 0mm 12 304 8mm 3 16 4 8mm 18 457 2mm 1 4 6 4mm 21 533 4mm 3 8 9 5mm 24 609 6mm 1 2 12 7mm 30 762 0mm 5 8 15 9mm 36 914 4mm 4 B 6 7
16. 4 2mm 3 32 2 4mm 3 16 4 8mm k Dead Center engine mount hole locator GPMR8130 glow engine installation only J Great Planes tap amp drill set 6 32 GPMR8102 glow engine installation only l Tap handle GPMR8120 glow engine installation only J Small metal file I 1 Hobby knife HCARO105 J 11 Blades 5 pack HCAR0211 J Medium T pins 100 HCAR5150 J Top Flite MonoKote sealing iron TOPR2100 J Top Flite Hot Sock iron cover TOPR2175 J 220 grit Sandpaper glow engine installation only J Great Planes Velcro Hook amp Loop 1 x 6 2 GPMQ4480 brushless installation only J Panel line pen TOPQ2510 Optional Supplies amp Tools Here is a list of optional tools that will help you build the Cherokee 40 ARF l 1 2 oz 15g Thick Pro CA GPMR6013 J 2 oz 57g Spray CA activator GPMR6035 J 4 oz 113g Aerosol CA activator GPMR6034 J CA applicator tips HCAR3780 J CA debonder GPMR6039 J Pro 6 minute epoxy GPMR6045 l Epoxy brushes 6 GPMR8060 I Mixing sticks GPMR8055 J Mixing cups GPMR8056 J Pliers with wire cutter HCAR0630 J Hobbico Duster can of compressed air HCAR5500 J Switch amp Charge jack mounting set GPMM1000 l Rotary tool such as Dremel J Rotary tool reinforced cut off wheel GPMR8020 J Servo horn drill HCARO698 J Hobby Heat micro torch II HCARO755 J Precision magnetic prop balancer TOPQ5700 J AccuThrow deflecti
17. 873 muffler extension OSMG2578 the bottom right corner of the fuselage will need to be carved away in order to accommodate the muffler body The firewall has dashed markings in this area indicating the location of the pre installed balsa block behind the firewall A piece of white Monokote is included with the Cherokee 40 ARF for covering up the area that was carved away No modification needs to be done to the fuselage when using a Pitts style muffler However we did cut the exhaust outlets slightly shorter for this installation J 11 If you haven t done so already cut the fuel line and vent line to muffler to the correct length and connect them to the engine The fill line should be left uncut and it can hang free from the bottom of the plane A fuel line plug is provided for the fill line 20 FINISH THE MODEL Install the Receiver 2 l 1 Make straps from the included hook and loop material to fit your receiver and receiver pack Cut pieces of foam rubber not included to fit your receiver and receiver pack and strap them to the radio tray as shown ki J 2 Connect the servos to the receiver being sure that the leads will not interfere with the tail pushrods Depending on the ESC being used if applicable you may need a servo extension to reach the receiver If you plan to connect the flap and aileron servos to the receiver using Y harnesses connect the harnesses to the receiver at this time d
18. Brushless Motor Installation ccccccssesseceeseseeeeeeeeeeeeeeseaeeeees 16 Assemble amp Install the Landing G ar ccccccsssesseeeeeeeeeeeneees 18 FINISH THE MODEL icisccscstecicacinestodsrsxcistieennderst dees esdzesiceawnewsdeesicknoteds 20 Install the HOCCIVER vesescisssctvavsancesnesevevsanslzasensyeenesienewrvsdoneaiunanaa seas 20 Install the Cowl Spinner amp Propeller ccccceseeeeeeeeeeeeeeeeeeeees 21 Install the Wing amp Canopy Hatch cccccccccesesssssseeeeeeeeeeseeeees 22 Apply the Decals creas ssdiavuthanphoiataudsteieneidiancoememnibisechaaieiniiiaiuitaned 22 GET THE MODEL READY TO FLY cece ee cee ee eteeeeeeeees 22 Install and Operate the Motor Battery Brushless Only 22 Battery Precautions Connecting Batteries ccccccesseseeeeees 23 Check the Control Directions vcissseinseisdictsssnnsededartivinancsedavssauneneas 23 Set the Control TAGOWS js cutecnswuanuihencheewenuutsanuietuunesbsanchaveunertsnenkesuns 23 Balance the Model C G cccccccssssssseeeeeeeesaeeeeeeeeeeesseeaseeeees 24 Balance the Model Laterally cccccccccccessesseeeeeeeeessneeseeeeers 25 PREFLIGHT wwisicioiciscnncaceissevvicsacatstandeancelietabonctseceladahandvasentadohoactexcnderets 25 Identify Your Model csicdsuscuansScenirnuaierebsuwounuaiaie ialeucueneusiabubvivesanebetdes 25 Charge the Batteries ccccccsssssseceeeeeseseeeeeeeeeeeseseeenseeeeeee
19. CORRECT INCORRECT HINGE LINE J J 8 Position the control horn over the plywood plate in the aileron if you cannot see it hold the aileron at a shallow angle in good lighting or use a small pin to puncture the covering using the position of the servo arm as a guide Align the holes in the control horns directly over the aileron hinge line and mark the location of the control horn mounting holes 2 x 1 2 13mm SCREWS J J 9 Drill 1 16 1 6mm holes at the marks you made through the plywood plate Do not drill all the way through the aileron Thread a 2 x 1 2 13mm self tapping screw through each hole and back it out Apply a couple drops of thin CA glue to each hole to harden the wood When the glue has dried install the control horn onto the aileron using two 2 x 1 2 13mm self tapping screws 2 56 074 Pushrod Wire FastLink a FASLINK J LJ 10 Use tape or a small clamp to hold the aileron in the neutral position Make a mark on the pushrod where it crosses the outer hole in the servo arm Make a 90 bend at the mark on the pushrod and cut off the excess pushrod 1 4 6mm beyond the bend Attach the pushrod to the servo arm using a nylon FasLink Thread the clevis up or down on the pushrod as necessary to center the aileron with the servo arm centered When satisfied slide the silicone clevis retainer to the end of the clevis to secure it Skip to step 13 if you are not installing operational fl
20. VER charge through the discharge lead NEVER charge at currents greater than 1C ALWAYS set charger s output volts to match battery volts ALWAYS charge in a fireproof location NEVER trickle charge NEVER allow the battery temperature to exceed 150 F 65 C NEVER disassemble or modify pack wiring in any way or puncture cells NEVER discharge below 2 5V per cell NEVER place on combustible materials or unattended during charge or discharge ALWAYS KEEP OUT OF REACH OF CHILDREN AMA SAFETY CODE excerpts Read and abide by the following excerpts from the Academy of Model Aeronautics Safety Code For the complete Safety Code refer to Model Aviation magazine the AMA web site or the Code that came with your AMA license 1 will not fly my model aircraft in sanctioned events air shows or model flying demonstrations until it has been proven to be airworthy by having been previously successfully flight tested leave 2 will not fly my model aircraft higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator will give right of way and avoid flying in the proximity of full scale aircraft Where necessary an observer shall be utilized to supervise flying to avoid having models fly in the proximity of full scale aircraft 3 Where established will abide by the safety rules for the flying site use and will not willfully and deliberately fly my models in a carele
21. al range of your radio before the first flight of the day With the transmitter antenna collapsed and the receiver and transmitter on you should be able to walk at least 100 feet away from the model and still have control Have an assistant stand by your model and while you work the controls tell you what the control surfaces are doing Repeat this test with the engine running at various speeds with an assistant holding the model using hand signals to show you what is happening If the control surfaces do not respond correctly do not fly Find and correct the problem first Look for loose servo connections or broken wires corroded wires on old servo connectors poor solder joints in your battery pack or a defective cell or a damaged receiver crystal from a previous crash ENGINE SAFETY PRECAUTIONS LITHIUM BATTERY HANDLING amp USAGE Failure to follow these safety precautions may result in severe injury to yourself and others Keep all engine fuel in a safe place away from high heat sparks or flames as fuel is very flammable Do not smoke near the engine or fuel and remember that engine exhaust gives off a great deal of deadly carbon monoxide Therefore do not run the engine in a closed room or garage Get help from an experienced pilot when learning to operate engines Use safety glasses when starting or running engines Do not run the engine in an area of loose gravel or sand the propeller may throw such material in your fa
22. aps 2 x 3 8 9 5mm SCREWS Pa _J J 11 Install the flap servo onto the flap servo hatch cover in the same manner the flap servos do not require servo extensions Install the hatch cover to the wing panel using four 2 x 3 8 9 5mm self tapping screws and four 2 flat washers Be sure to harden the screw holes with thin CA 10 _J J 12 Install a control horn onto the flap using two 2 x 3 8 9 5mm screws Make note that these screws are shorter than the ones used for the aileron control horns As you did with the aileron install a 4 102mm pushrod onto the flap Before connecting the pushrod to the flap servo use your radio system to operate the flap servo through the whole range of motion In order to achieve the recommended flap deflection use the end point adjustment on your transmitter to reduce the servo travel to approximately 50 of total 30 degrees if applicable J L 13 Route the servo lead s through the hole in the top of the wing panel J 14 Repeat steps 1 to 13 for the other wing panel When installing the flap servo in the other wing panel if applicable make note that both flap servos must be oriented in the same direction one flap servo arm will be facing the root rib and the other flap servo arm will be facing the wing tip in order for them both to rotate the same direction when joined with a Y harness Fixed Flaps BUILD THE FUSELAGE If you are not installing operational fl
23. aps follow these steps Install the Tail Surfaces to lock the flaps into the neutral position If in the future you choose to add operational flaps simply cut the ABS strips along the inside edge of each flap and install the flap servos and linkage as described in previous steps d 1 Place the horizontal stab onto the stab saddle in the fuselage and align the three holes in the stab with the three holes in the saddle Align the holes in the vertical fin base with the holes in the stab Press the forward end of the vertical 2 Center the strips over the inside edge of each flap just fin into the slot in the fuselage Use three 6 32 x 1 25mm forward of the flap trailing edge Use a felt tip pen to trace SHCS and threadlocking compound to bolt the vertical fin around the shape of the ABS flap strips onto the flaps and and horizontal stab to the fuselage A Strip of red covering IS wing panels provided to cover the screw holes if desired J 3 Carefully remove the covering approximately 1 16 1 6mm inside the lines you drew using a sharp hobby knife Take care not to cut into the wood when cutting the covering I 4 Wipe away the lines from the pen using a cloth dampened with alcohol and glue the strips into position k 2 Temporarily insert a 36 914mm pushrod into the elevator outer pushrod tube that exits the right side of the fuselage Use the position of the pushrod to mark the location for the elevator control horn ont
24. by shop has information about clubs in your area whose membership includes experienced pilots 8 While this kit has been flight tested to exceed normal use if the plane will be used for extremely high stress flying such as racing or if an engine larger than one in the recommended range is used the modeler is responsible for taking steps to reinforce the high stress points and or substituting hardware more suitable for the increased stress 9 WARNING The cowl and wheel pants included in this kit are made of fiberglass the fibers of which may cause eye skin and respiratory tract irritation Never blow into a part to remove fiberglass dust as the dust will blow back into your eyes Always wear safety goggles a particle mask and rubber gloves when grinding drilling and sanding fiberglass parts Vacuum the parts and the work area thoroughly after working with fiberglass parts We as the kit manufacturer provide you with a top quality thoroughly tested kit and instructions but ultimately the quality and flyability of your finished model depends on how you build it therefore we cannot in any way guarantee the performance of your completed model and no representations are expressed or implied as to the performance or safety of your completed model Remember Take your time and follow the instructions to end up with a well built model that is straight and true DECISIONS YOU MUST MAKE This is a partial list of items require
25. ce or eyes Keep your face and body as well as all soectators away from the plane of rotation of the propeller as you start and run the engine Keep these items away from the prop loose clothing shirt sleeves ties scarves long hair or loose objects such as pencils or screwdrivers that may fall out of shirt or jacket pockets into the prop Use a chicken stick or electric starter to start the engine Do not use your fingers to flip the propeller Make certain the glow plug clip or connector is secure so that it will not pop off or otherwise get into the running propeller Make all engine adjustments from behind the rotating propeller The engine gets hot Do not touch it during or right after operation Make sure fuel lines are in good condition so fuel will not leak onto a hot engine causing a fire To stop a glow engine cut off the fuel supply by closing off the fuel line or following the engine manufacturer s recommendations Do not use hands fingers or any other body part to try to stop the engine Do not throw anything into the propeller of a running engine 26 WARNING Read the entire instruction sheet included with your battery Failure to follow all instructions could cause permanent damage to the battery and its surroundings and cause bodily harm e ONLY use a LiPo approved charger NEVER use a NiCd NiMH peak charger NEVER charge in excess of 4 20V per cell ONLY charge through the charge lead NE
26. commended The stock muffler can also be used with a muffler extension but additional modification to the fuselage and cowl would be necessary Engine and motor order numbers are provided below I O S 46 AX ABL w Muffler OSMG0547 I Bisson O S 46 SF FX 50 SX Pitts Muffler BISG4046 J O S Muffler Extension 873 OSMG2578 Stock muffler only I Great Planes RimFire 42 50 800 out runner brushless GPMG4700 Great Planes Brushless Motor Mount Medium Motors GPMG1255 If using the recommended brushless motor a 60A brushless ESC is required J Great Planes Silver Series 60A brushless ESC high volt GPMM1850 Propeller If you are installing a glow engine choose a prop based on the engine manufacturer s recommendation If you are installing the recommended RimFire brushless motor we suggest a 10 x 5 E or 11 x 5 5 E APC propeller The 10 x 5 E prop provides adequate power with a longer flight time The 11 x 5 5 E provides excellent power for the Cherokee 40 ARF at the cost of a shorter flight time J APC 10 x 5 electric propeller APCQ4120 J APC 11 x 5 5 electric propeller APCQ1055 Batteries amp Charger For a brushless motor installation one 3200mAh 11 1V LiPo battery pack and one 3200mAnh 7 4V LiPo battery pack connected in series are recommended Order numbers for the battery packs and series connector are provided below J Great Planes LiPo 7 4V 3200mAh 20C discharge w balance GPMP0622 J Great
27. d to finish the Cherokee 40 ARF that may require planning or decision making before Starting to build Order numbers are provided in parentheses Radio Equipment The Cherokee 40 ARF requires a minimum 4 channel radio system with four to seven 44 oz in 3 2 kg cm minimum standard servos Operational flaps will require six servos If you are installing a glow engine an additional standard servo is required for the throttle In addition two 9 229mm servo extensions are required for the aileron servos If you are using a radio system that does not support mixing functions two Y harnesses will also be required to connect the aileron servos and flap servos to the receiver Acharge jackreceptacle is optional butis useful for recharging the receiver pack without removing the canopy hatch and is shown in the assembly of the plane Recommended part numbers for the radio components are provided below J Futaba S3003 Servo Standard FUTM0031 J Futaba S9001 Servo Aircraft Coreless BB optional FUTM0075 J Futaba 9 Servo Extension J FUTM3910 J Futaba 6 Dual Servo Extension J FUTM4130 J Ernst Charge Receptacle Futaba J FM ERNM3001 Power System Recommendations The recommended engine motor size for the Cherokee 40 ARF is a 40 to 46 cu in 7 to 7 5cc two stroke engine 56 cu in 9 2cc four stroke engine or a RimFire 42 50 800kV brushless out runner motor If installing a two stroke glow engine a Pitts muffler is re
28. e holes with thin CA J 4 Fit the main landing gear legs into the slots in the underside of the wing panels Position two nylon landing gear straps over each landing gear leg at a 45 angle as shown Mark the locations of the screw holes onto the wing and drill holes at your marks using a 3 32 2 4mm drill bit Secure the landing gear legs to the wing panels using the nylon landing gear straps and 4 x 1 2 13mm self tapping screws J 5 Install the nose wheel pant and wheel onto the nose gear wheel collar with threadlocking compound and tighten the wire in the same manner as you did the main landing gear yy by ee he Ji an an 1 SCREW LOCK PUS CONNECTOR Oy es r SCL ce tamm SAS pi L 6 Fit a 5 32 4mm wheel collar into the nylon steering arm aligning the threaded hole in the collar with the hole in the arm Loosely thread a 6 32 x 1 4 6mm SHCS with threadlocking compound through the hole in the arm and into the collar Install a brass screw lock pushrod connector using a nylon retainer into the outer hole on the steering arm Loosely thread a 4 40 x 1 8 8mm SHCS into the screw lock pushrod connector I 7 Fit the steering arm between the nylon steering block halves Insert the nose gear wire up through the steering block and through the steering arm as shown Tighten the SHCS against the flat spot in the nose gear wire l 8 Align the bottom edge of the steering block with the bottom
29. e retainers on all the clevises and that all servo arms are secured to the servos with the screws included with your radio J11 Secure connections between servo wires and Y connectors or servo extensions and the connection between your battery pack and the on off switch with vinyl tape heat shrink tubing or special clips suitable for that purpose J 12 Make sure any servo extension cords you may have used do not interfere with other systems servo arms pushrods etc J 13 Secure the pressure tap if used to the muffler with high temp RTV silicone threadlocking compound or J B Weld J 14 Make sure the fuel lines are connected and are not kinked J 15 Balance your propeller and spare propellers l 16 Tighten the propeller nut and spinner l 17 Place your name address AMA number and telephone number on or inside your model J 18 Cycle your receiver battery pack if necessary and make sure it is fully charged J 19 If you wish to photograph your model do so before your first flight J 20 Range check your radio when you get to the flying field FLYING The Cherokee 40 ARF is a great flying model that flies smoothly and predictably The Cherokee 40 ARF does not however possess the self recovery characteristics of a primary R C trainer and should be flown only by experienced R C pilots Fuel Mixture Adjustments A fully cowled engine may run at a higher temperature than an un cowled engine For this reason
30. e threads in the four mounting holes Attach the engine to the mount using four 6 32 x 3 4 19mm SHCS J 11 Cut three arms from a four armed servo arm Install a four 6 flat washers and four 6 lock washers brass screw lock pushrod connector using a nylon retainer 15 into the third outer hole in the remaining servo arm with a 4 40 set screw loosely threaded into the connector Center the throttle servo with your radio system and install the servo arm onto the servo as shown Use the hardware included with the servo and install it next to the elevator servo PUSHROD MUST SEAR E EXHAUST _J 12 Install a nylon clevis and clevis retainer 20 complete turns onto a 17 1 2 445mm pushrod Insert the pushrod through the forward end of the outer pushrod tube and through the screw lock pushrod connector on the throttle servo Connect the clevis to the throttle arm on the carburetor If necessary bend the pushrod in order to clear the exhaust port Make the necessary adjustments so that the throttle servo properly opens and closes the carburetor Tighten the 4 40 set screw against the pushrod Cut off the excess pushrod 1 4 6mm behind the screw lock pushrod connector 16 Brushless Motor Installation If you have installed a glow engine skip this section as it only contains information relevant to installing a brushless motor Be sure to read and understand the instructions that come with the ESC and motor before attem
31. edge of the hardwood mounting plate on the firewall Mark the locations of the four steering block mounting holes onto the hardwood plate Drill 3 82 2 4mm holes at the marks you made Mount the steering block onto the hardwood plate using four 4 x 5 8 16mm self tapping screws being sure to harden the holes with thin CA 19 Eqns j i LJE Hl N J 9 Cut off the threads from the remaining 12 305mm pushrod leaving all of the unthreaded portion of the pushrod intact Make a mark 3 16 4 8mm from one end of the pushrod and make a 90 bend at the mark Fit the unbent end through the steering pushrod hole in the second fuselage former and out the hole in the firewall Fit the forward pushrod end into the brass screw lock pushrod connector on the nylon steering arm Insert the bent end of the pushrod into the second inner hole in the unused side of the rudder servo arm Secure the pushrod onto the servo arm using a nylon FasLink With the rudder servo arm perpendicular to the servo case rotate the nose gear wire so that the nose wheel is pointing straight Tighten the SHCS in the brass screw lock pushrod connector against the pushrod J 10 With the nose gear in place the muffler can now be installed onto the engine if applicable Either the stock muffler can be used or a Pitts style muffler If using the stock muffler included with the engine a muffler extension will be required If installing the O S Max
32. enes 25 Balance Propellers ea ee et ee er 25 UA OOM aoe E T E O 25 Range Check ti icnacvivsnusscnesinendanttscoomisannbieeseumvsaneihsenemevenineexennes ies 25 ENGINE SAFETY PRECAUTIONG cccccccessssssssseeeeeeeeeeeeees 26 LITHIUM BATTERY HANDLING amp USAGE 000 ee 26 AMA SAFETY CODE excerpts ccccccccccsssssssssssseeeeeeeeeeeees 26 CHECK ects wc ied atic recesses E E eceesuentees nen 2r FEYIN aree NEEE E AEE EEE 27 Fuel Mixture ACjUStMENts ccccccsesseeeceeeeeceeeeseeeeeeeesaseaeeeeeens 27 MA e E E P A E T TE 27 FIOD oaea E EE EE Back Cover Page EEn ea S A E A E E A Back Cover Page Ee AT E EE E E Back Cover Page INTRODUCTION Congratulations on your purchase of the Great Planes Cherokee 40 ARF We have designed this plane to be a quick fuss free build by minimizing the amount of glue and measuring that needs to be done for a typical ARF With a bolt on self aligning tail section along with many other small time consuming tasks already complete you can have your Cherokee 40 ARF built in as little as 4 to 6 hours Just like its full scale counterpart the Cherokee 40 ARF is extremely easy to fly and would be appropriate for beginners who have mastered a trainer or for the veteran pilot who just appreciates the rich history of the Cherokee For the latest technical updates or manual corrections to the Cherokee 40 ARF visit the Great Planes web site at www greatplanes com Open the
33. er AMA number This model belongs to Name Address City State Zip Make a copy of this identification tag and put it on or inside your model
34. erokee 40 ARF should not be considered a toy but rather a sophisticated working model that functions very much like a full size airplane Because of its performance capabilities the Cherokee 40 ARF if not assembled and operated correctly could possibly cause injury to yourself or spectators and damage to property 2 You must assemble the model according to the instructions Do not alter or modify the model as doing so may result in an unsafe or unflyable model In a few cases the instructions may differ slightly from the photos In those instances the written instructions should be considered as correct 3 You must take time to build straight true and strong 4 You must use an R C radio system that is in first class condition and a correctly sized engine and components throughout the building process 5 You must correctly install all R C and other components so that the model operates correctly on the ground and in the air 6 You must check the operation of the model before every flight to insure that all equipment is operating and that the model has remained structurally sound Be sure to check clevises or other connectors often and replace them if they show any signs of wear or fatigue 7 If you are not an experienced pilot or have not flown this type of model before we recommend that you get the assistance of an experienced pilot in your R C club for your first flights If you re not a member of a club your local hob
35. g Note The throws are measured at the widest part of the elevators rudder and ailerons If you are using a ruler to set your control surface throws the deflection distance is measured as the height from the center TE of the control surface when moved from the neutral position as shown in the sketch Deflection in degrees is also provided for an alternative measuring method These are the recommended control surface throws Low Rate 3 8 9 5mm 16 deg up 3 8 9 5mm 16 deg down High Rate 1 2 138mm 21 deg up 1 2 13mm 21 deg down ELEVATOR RUDDER 1 1 4 82mm 34 deg right 5 8 16mm 17 deg right 1 1 4 82mm 34 deg left 5 8 16mm 17 deg left AILERONS 1 25mm 24 deg up 1 25mm 24 deg down 7 16 11mm 10 deg up 7 16 11mm 10 deg down FLAPS Full 9 16 14mm 24 deg 1 2 5 16 8mm 13 deg IMPORTANT The Cherokee 40 ARF has been extensively flown and tested to arrive at the throws at which it flies best Flying your model at these throws will provide you with the greatest chance for successful first flights If after you have become accustomed to the way the Cherokee 40 ARF flies you would like to change the throws to suit your taste that is fine However too much control throw could make the model difficult to control so remember more is not always better Balance the Model C G More than any other factor the C G balance point can have the greatest effect on how a model
36. he last few moments of preparation your mind may be elsewhere anticipating the excitement of the first flight Because of this you may be more likely to overlook certain checks and procedures that should be performed before the model is flown To help avoid this a check list is provided to make sure these important areas are not overlooked Many are covered in the instruction manual so where appropriate refer to the manual for complete instructions Be sure to check the items off as they are completed k 1 Check the C G according to the measurements provided in the manual J 2 Be certain the battery and receiver are securely mounted in the fuselage Simply stuffing them into place with foam rubber is not sufficient Extend your receiver antenna Balance your model aterally as explained in the instructions Use threadlocking compound to secure critical fasteners such as the set screws that hold the wheel axles to the struts screws that hold the carburetor arm if applicable screw lock pushrod connectors etc Add a drop of oil to the axles so the wheels will turn freely Make sure all hinges are securely glued in place d 6 Ld 7 27 J 8 Reinforce holes for wood screws with thin CA where appropriate Servo mounting screws cowl mounting screws etc J 9 Confirm that all controls operate in the correct direction and the throws are set up according to the manual J 10 Make sure there are silicon
37. hould be done for 15 hours using the slow charger that came with the radio system This will condition the batteries so that the next charge may be done using the fast charger of your choice If the initial charge is done with a fast charger the batteries may not reach their full capacity and you may be flying with batteries that are only partially charged 25 Balance Propellers Carefully balance your propeller and spare propellers before you fly An unbalanced prop can be the single most significant cause of vibration that can damage your model Not only will engine mounting screws and bolts loosen possibly with disastrous effect but vibration may also damage your radio receiver and battery Vibration can also cause your fuel to foam which will in turn cause your engine to run hot or quit We use a Top Flite Precision Magnetic Prop Balancer TOPQ5700 in the workshop and keep a Great Planes Fingertip Prop Balancer GPMQ5000 in our flight box Ground Check If the engine is new follow the engine manufacturer s instructions to break in the engine After break in confirm that the engine idles reliably transitions smoothly and rapidly to full power and maintains full power indefinitely After you run the engine on the model inspect the model closely to make sure all screws remained tight the hinges are secure the prop is secure and all pushrods and connectors are secure Range Check Ground check the operation
38. ium high heat to tighten the covering if necessary Apply pressure over sheeted areas to thoroughly bond the covering to the wood BUILD THE WING PANELS Install the Aileron amp Flap Servos amp Pushrods Before completing this section confirm that the servos that you will be using will properly fit between the servo mounting block locations on the aileron and flap servo hatch covers Make adjustments as necessary for your brand of servos The block locations shown in this section will fit a standard size Futaba brand servo J L 1 Trim the covering from the servo arm cutouts in the aileron and flap if you will have operational flaps servo hatch covers Use epoxy to glue the 3 4 x 3 4 x 5 16 19 x 19 x 8mm hardwood servo mounting blocks to the inside of the aileron and flap hatch covers Be sure that the blocks are aligned 8 over the rectangles with the grain direction perpendicular to the covers Allow the epoxy to cure undisturbed ENLARGE TO 5 64 500 o _ 0 000 we a ee CUT OFF of UNUSED ARMS o nom _J L 2 Cut three arms from a four armed servo arm for the aileron servo Enlarge the outer hole of the remaining arm with a 5 64 2mm drill bit BES SHRINK _J J 3 Attach a 9 229mm servo extension to the aileron servo and secure the connector using tape or heat shrink tubing not included Center the servo with your radio system and install the servo arm to the servo perpendicular t
39. kee 40 ARF is capable of some graceful aerobatic maneuvers Well before it s time to land fly your Cherokee 40 ARF to a safe altitude Cut the throttle to an idle lower the flaps completely and check out the model s low speed characteristics Do this several times to become familiar with how the Cherokee 40 ARF handles stalls This also helps you learn what to expect when landing CAUTION THIS APPLIES TO ALL R C AIRPLANES If while flying you notice an alarming or unusual sound such as a low pitched buzz this may indicate control surface flutter Flutter occurs when a control surface Such as an aileron or elevator or a flying surface such as a wing or stab rapidly vibrates up and down thus causing the noise In extreme cases if not detected immediately flutter can actually cause the control surface to detach or the flying surface to fail thus causing loss of control followed by an impending crash The best thing to do when flutter is detected is to slow the model immediately by reducing power then land as soon as safely possible Identify which surface fluttered so the problem may be resolved by checking all the servo grommets for deterioration or signs of vibration Make certain all pushrod linkages are secure and free of play If it fluttered once under similar circumstances it will probably flutter again unless the problem is fixed Some things which can cause flutter are Excessive hinge gap Not mounting control h
40. ks must be able to move freely inside the tank when assembled Adjust the length of the fuel tubing accordingly When satisfied tighten the 3 x 25mm screw in the stopper to secure it in place do not overtighten Mark the side of the tank that must face up when installed in the plane and we also suggest marking the tubes in the stopper J 3 Make two 12 305mm long hook and loop straps from ends of each side by approximately 2 51mm Insert the straps into the slots in the plywood fuel tank tray as shown 2x 1 2 HG SCREWS mt f J 4 Fit the fuel tank tray into the fuselage by inserting the tab at the forward end of the tray into the slot in the firewall Press the tray down onto the receiving tabs in the fuselage former and cross brace Drill two 1 16 1 6mm holes through the tray and into the hardwood mounting blocks Secure the tray in place using two 2 x 1 2 13mm screws and two 2 flat washers being sure to harden the screw holes with thin CA fo J 5 Cut a piece of 1 4 6mm foam rubber not included to fit the fuel tank Lay the foam rubber onto the fuel tank tray it can be glued into place Insert the neck of the tank through the hole in the firewall as far as it will go being sure that the right side of the tank is facing up Use the hook and loop straps to secure the tank in place l 6 Attach a 6 152mm piece of fuel tubing to each of the tubes in the fuel tank stopper d 7 Usi
41. ng four 6 32 x 3 4 19mm SHCS four 6 flat washers four 6 lock washers and threadlocking compound the included hook and loop material by overlapping the mating attach the engine mount side mounted to the firewall so that the engine head will be on the right side Leave the screws slightly loose Test fit your engine between the mount halves Slide the mount halves against the sides of the engine and finish tightening the mount screws l 9 Drill a 3 16 4 8mm hole in the firewall inline with throttle arm in the carburetor using a long drill bit if you do not have a long drill bit you may need to temporarily remove the engine Be sure you do not drill through the fuel tank The hole in the firewall must clear the exhaust port on the engine Also drill through the second former in the fuselage l 10 Cut a piece from the included outer pushrod tube long enough to extend beyond the firewall and second former approximately 1 4 6mm Roughen the portion of the tube that contacts the formers using 220 grit sandpaper Glue the tube into the holes with CA aes au l 8 Position the front of the engine drive washer 4 15 16 126mm from the front of the engine mounting box Note The dimension ts the same for both four stroke or two stroke engines Mark the location of the engine mount holes onto the mount rails using a Dead Center Hole Locator Remove the engine from the mount and use a 6 32 tap and drill set to creat
42. o the servo case as shown Be sure to reinstall the servo arm screw into the servo CENTERED INOPENING J 4 Position the servo against the underside of the aileron servo hatch cover between the mounting blocks Shim the aileron servo away from the hatch cover approximately 3 64 1 2mm to isolate it from vibration a business card folded in thirds works well for this Drill 1 16 1 6mm holes through the mounting tabs on the servo case into the blocks Thread a servo mounting screw included with the servo into each hole and back it out Apply a drop of thin CA to each hole to harden the wood When the CA has dried install the servo onto the hatch cover using the hardware supplied with the servo J J 5 Use the string taped inside the aileron servo bay to pull the servo lead through the wing ribs 2 x 3 8 9 5mm a SCREWS l kl a 6 Thread a 2 x 3 8 9 5mm self tapping screw into each servo hatch mounting hole in the wing panel and back it out Apply a drop of thin CA to each hole to harden the wood Install the aileron hatch cover to the wing panel using four 2 x 3 8 9 5mm self tapping screws and four 2 flat washers A 102mm Lies fe Wwi LIDAR ta PUSHROD pDCTAINICO T r CONTROL HORN aa J J 7 Thread a nylon clevis 20 complete turns onto a 4 102mm pushrod Slide a silicone clevis retainer onto the clevis and connect the clevis to the outer hole of a control horn
43. o the underside of the elevator 11 J 3 Drill 3 32 2 4mm holes at your marks completely through the elevator Apply a couple drops of thin CA to each hole to harden the surrounding wood Install a control horn and backplate onto the underside of the elevator using two 2 56 x 1 2 13mm machine screws I 4 Install a control horn onto the left side of the rudder in the same manner 12 Install the Tail Servos amp Pushrods 5 64 2mm HOLE a 5 64 2mm RUDDER NOSE WHEEL SERVO J 1 Cut two arms from a four armed servo arm and enlarge the outer hole of one remaining arm with a 5 64 2mm drill bit and the second inner hole of the other remaining arm with the same bit Center the rudder servo with your radio system and install the servo arm perpendicular to the servo case as shown with the outer drilled hole toward the center of the fuselage 4 FORWARD ALIGN HOLE WITH PUSHROD k 2 Temporarily insert a 36 914mm pushrod into the rudder outer pushrod tube Use the pushrod to position the rudder servo onto the servo tray in the fuselage as shown Align the outer hole of the inside servo arm with the pushrod Thread a servo mounting screw included with the servo into each mounting hole in the servo and back it out Apply a couple drops of thin CA to each hole in the servo tray to harden the surrounding wood Mount the servo using the hardware included with the servo D 4 4 6mm O a
44. of the four cowl mounting screws cowl through the cowl mounting blocks Remove the cowl and thread a 2 x 1 2 13mm self tapping screw into each hole in the cowl mounting blocks and back it out Apply a couple drops of thin CA to each hole in the blocks Enlarge the four holes in the cowl with a 3 32 2 4mm bit Install the cowl onto the fuselage using four 2 x 1 2 13mm self tapping screws and four 2 flat washers I 5 If necessary ream or drill the spinner backplate to fit the crankshaft of your engine or brushless motor prop adapter Install the backplate onto the crankshaft followed by the propeller Install the prop washer and prop nut Depending on the size propeller you are using you may need to enlarge the propeller blade cutouts in the spinner cone When a good fit is achieved use the screws included with the spinner to install the spinner cone onto the backplate l 1 Fit the two wing panels onto the aluminum wing joiner tube Slide the root ribs of the panels together so that the anti rotation pin preinstalled in one panel fits into the mating hole of the other panel Slide the wing dowels that are preinstalled in the LE of the wing panels into the receiving holes in the fuselage at the front of the wing saddle Use two 1 4 20 nylon wing bolts to secure the wing in place GLUE WASHERS TO SCREWS 4 eT k 2 We suggest gluing a 4 washer to each of the two 4 40 x 5 8 16mm canopy hatch screws Take care
45. on gauge GPMR2405 I C G Machine GPMR2400 J Hobbico flexible 18 ruler stainless steel HCAR0460 J Top Flite MonoKote trim seal iron TOPR2200 J Top Flite MonoKote heat gun TOPR2000 J Hobbico pin vise 1 16 collet w 6 Bits HCARO696 l Hobbico 8 piece ball tip hex L wrench SAE HCAR0520 J Hobbico 7 piece ball tip hex L wrench Metric HCAR0521 J Great Planes clevis installation tool GPMR8030 BUILDING STAND A building stand or cradle comes in handy during the build We use the Robart Super Stand I ROBP1402 for all our projects in R amp D and it can be seen in pictures throughout this manual IMPORTANT BUILDING NOTES e When you see the term test fit in the instructions it means that you should first position the part on the assembly without using any glue then slightly modify or custom fit the part as necessary for the best fit e Whenever the term glue is written you should rely upon your experience to decide what type of glue to use When a specific type of adhesive works best for that step the instructions will make a recommendation e Whenever just epoxy is specified you may use either 30 minute or 45 minute epoxy or 6 minute epoxy When 30 minute epoxy is specified it is highly recommended that you use only 30 minute or 45 minute epoxy because you will need the working time and or the additional strength e Photos and sketches are placed before the step they refer to Frequently you can study ph
46. orns solidly Poor fit of clevis pin in horn Side play of wire pushrods caused by large bends Excessive free play in servo gears Insecure servo mounting and one of the most prevalent causes of flutter Flying an over powered model at excessive speeds When it s time to land fly a normal landing pattern and approach The Cherokee 40 ARF may bleed off airspeed more rapidly than the sport planes you are used to For this reason be prepared to carry a little power during approach For your first landings plan to approach slightly faster than Stall soeed and flare a few inches off the runway onto the main wheels Full flaps make the Cherokee 40 ARF very steady in the landing pattern but just carry a little extra power to make up for the extra drag The extra drag of the flaps also allows you to make shorter steeper approaches The Cherokee 40 ARF needs to touch down with a nose high attitude to avoid whacking the nose gear and skipping back into the air For this reason landings with flaps require a deliberate flare with high rate elevator to raise the nose Touch and go s and go arounds can be accomplished with full flaps Just use the elevator to establish a shallow climb It is preferred to have the flaps up or at half setting for takeoffs and climb outs because the plane will accelerate and climb much better Have a ball But always stay in control and fly in a safe manner GOOD LUCK AND GREAT FLYING Phone numb
47. otos in following steps to get another view of the same parts e The stabilizer and wing incidences and engine thrust angles have been factory built into this model However some technically minded modelers may wish to check these measurements anyway To view this information visit the web site at www greatplanes com and click on Technical Data Due to manufacturing tolerances which will have little or no effect on the way your model will fly please expect slight deviations between your model and the published values ORDERING REPLACEMENT PARTS Replacement parts for the Great Planes Cherokee 40 ARF are available using the order numbers in the Replacement Parts List that follows The fastest most economical service can be provided by your hobby dealer or mail order company To locate a hobby dealer visit the Hobbico web site at www hobbico com Choose Where to Buy at the bottom of the menu on the left side of the page Follow the instructions provided on the page to locate a U S Canadian or International dealer Parts may also be ordered directly from Hobby Services by calling 217 398 0007 or via facsimile at 217 398 7721 but full retail prices and shipping and handling charges will apply Illinois and Nevada residents will also be charged sales tax If ordering via fax include a Visa or MasterCard number and expiration date for payment Mail parts orders and payments by personal check to Hobby Services 3
48. pting to operate the system J 1 Attach the out runner motor to the brushless motor mount using the included 3 x 8mm machine screws and threadlocking compound If you haven t done so yet install the prop adapter to the motor case with the hardware included with the motor and threadlocking compound Loosen the screws that hold the two motor mount halves together and set the distance from the back side of the mount to the front of the prop adapter to be 4 15 16 126mm Retighten the screws using threadlocking compound l 2 Glue the two ESC mounting tray pieces together in the orientation shown Note that the mounting slots are slightly offset toward the top side of the mount Be sure that the mounting halves are glued together in the direction shown Attach the mounting tray to the right side of the aluminum motor mount using two 4 40 x 5 8 16mm machine screws two 4 flat washers and threadlocking compound thread the screws into unused holes in the aluminum mount If you are installing the recommended Great Planes ESC glue the three plywood washers onto the face of the mount Rubber band tabs are provided for other model ESCs 4 x 1 2 13mm SCREWS ay l 3 If using the Great Planes ESC install it to the mounting tray using three 4 x 1 2 138mm self tapping screws Be sure to harden the holes with thin CA If installing another model ESC use rubber bands not included and self adhesive hook and loop material
49. r epoxy to permanently hold the weight in place _J 4 IMPORTANT If you found it necessary to add any weight recheck the C G after the weight has been installed Balance the Model Laterally J 1 With the wing level have an assistant help you lift the model by the engine propeller shaft and the bottom of the fuselage under the TE of the fin Do this several times J 2 If one wing always drops when you lift the model it means that side is heavy Balance the airplane by adding weight to the other wing tip An airplane that has been laterally balanced will track better in loops and other maneuvers PREFLIGHT Indentify Your Model No matter if you fly at an AMA sanctioned R C club site or if you fly somewhere on your own you should always have your name address telephone number and AMA number on or inside your model It is required at all AMA R C club flying sites and AMA sanctioned flying events Fill out the identification tag on page 28 or on the decal sheet and place it on or inside your model Charge the Batteries Follow the battery charging instructions that came with your radio control system to charge the batteries You should always charge your transmitter and receiver batteries the night before you go flying and at other times as recommended by the radio manufacturer CAUTION Unless the instructions that came with your radio system state differently the initial charge on new transmitter and receiver batteries s
50. rge each battery pack separately Charge the batteries then read the following precautions on how to connect multiple packs for flying the model Battery Precautions Connecting Batteries Check the Control Directions This is how to connect four batteries in Series These are four 11 1V 3200mAh batteries When joined in Series the result will be a 44 4V 3200mAh battery OKAY These are SERIES adapters that connect two batteries in Series To 22 2V T 3200mAh 3200mAh 222V T 3900mAh I 1 11 1V 3 cell 3200mAh t Connecting batteries in Series means to connect the s to the s and the s to the s This combines the batteries voltages but the capacity remains the same This is how to connect three batteries in Series These are three 11 1V 3200mAh batteries When joined in Series the result will be a 33 3V 3200mAh battery 3200mAh 3200mAh i 11V 3 cel EA 3200mAh 11 1V 3 cell 3200mAh Batteries of different voltages but not different capacities may also be connected in Series These are three 11 1V 3200mAh batteries and one 7 4V 3 200mAh battery When joined in Series the result will be a 40 7V 3200mAh battery OKAY 74V 3 cell EH Different 3200mAh 18 5V Voltage Ss 3200mAh 11 1V 3 cel EH 3200mAh os 40 7V t 3200mAh 11 1V 3 cell EH 3200mAh 59 oy 11V 3 cel EA iil 3200mAh It s okay to connect batteries with different Voltages
51. ss reckless and or dangerous manner 5 will not fly my model unless it is identified with my name and address or AMA number on or in the model Note This does not apply to models while being flown indoors 7 will not operate models with pyrotechnics any device that explodes burns or propels a projectile of any kind Radio Control 1 will have completed a successful radio equipment ground check before the first flight of a new or repaired model 2 will not fly my model aircraft in the presence of spectators until become a qualified flier unless assisted by an experienced helper 3 At all flying sites a straight or curved line s must be established in front of which all flying takes place with the other side for spectators Only personnel involved with flying the aircraft are allowed at or in the front of the flight line Intentional flying behind the flight line is prohibited 4 will operate my model using only radio control frequencies currently allowed by the Federal Communications Commission 5 will not knowingly operate my model within three miles of any pre existing flying site except in accordance with the frequency sharing agreement listed in the complete AMA Safety Code 9 Under no circumstances may a pilot or other person touch a powered model in flight nor should any part of the model other than the landing gear intentionally touch the ground except while landing CHECK LIST During t
52. the fuel mixture should be richened so the engine runs at about 200 rom below peak speed By running the engine slightly rich you will help prevent dead stick landings caused by overheating Takeoff If you have dual rates on your transmitter set the switches to high rate for takeoff especially when taking off in a crosswind Although this model has good low speed characteristics you should always build up as much speed as your runway will permit before lifting off as this will give you a safety margin in case of a flame out When you first advance the throttle the plane will usually turn left slightly Correct by applying sufficient right rudder to hold it straight down the runway When the plane has sufficient flying speed lift off by smoothly applying up elevator don t jerk it off into a steep climb and climb out gradually Do not use flaps for your initial takeoff After you have the feel of the Cherokee 40 ARF takeoffs may be made with the flaps set at 50 Flight We recommend that you take it easy with your Cherokee 40 ARF for the first several flights gradually getting acquainted with this realistic model as your engine gets fully broken in Add and practice one maneuver at a time learning how she behaves in each For ultra smooth flying and normal maneuvers we recommend using the low rate settings as listed on page 24 Though the full scale Cherokee is not rated for aerobatics the Chero
53. ttom of your battery pack Also use some self adhesive hook and loop material to join the 11 1V and 7 4V packs together The straps you made in step 4 are used to securely hold the battery packs onto the tray Test fit your packs onto the tray and cut the straps to the desired length Now would also be a good time to confirm the correct rotation of the motor using the ESC and radio system If the motor rotates in the wrong direction unhook any two motor leads and swap their positions Assemble amp Install the Landing Gear J 1 While fitting the axle end of the main landing gear legs into the main wheel pants slide a 5 32 4mm wheel collar onto each axle followed by a 2 1 2 64mm wheel and then another 5 32 4mm wheel collar Mark the location of the threaded holes in the wheel collars onto the axles Use a file or rotary tool such as a Dremel to grind flat spots at the marks on the axles J 2 Reinstall the wheel pants wheel collars and wheels onto the axles Thread a 6 32 x 1 4 6mm SHCS into each screws against the flat spots on the axles Be sure that the wheels rotate freely on the axles Oil the axles if necessary 4 x 3 8 9 5mm I SCREWS l 3 Place a landing gear strap over each gear leg and mark the locations for the screw holes Drill 3 32 2 4mm holes at your marks being sure not to drill into the wheels Install a strap onto each pant using two 4 x 3 8 9 5mm self tapping screws Reinforce th
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