50cc Extra 300LP Assembly Manual
Contents
1. 57 5e pat OE Epio ede NEA 57 Preflight Preparation vivus une uaa dub peewee sul tans ERES 62 EE seu qn Uo a UN 65 Center of Gravity C G Control Throws cce eee eese eee ooo eoe 69 Control Throw Dellectiom Table visere vun av vts a UR EEVE PE 72 AEROWORKS 4903 Nome Street Denver CO 80239 Phone 303 366 4205 Fax 303 366 4203 Website www aero works net E mail Info aero works net Thank you for choosing the Aeroworks 50cc EXTRA 300LP ARF QB We put great effort into making this plane the best model you will ever build and fly We have pro vided you with the highest quality kit and performance possible We wish you great suc cess in the assembly and flying of your new Aeroworks 50cc EXTRA 300LP ARF QB WARNING An R C aircraft 1s not a toy If misused it can cause serious bodily harm and property damage Fly only in open areas and AMA Academy of Model Aeronautics approved flying sites Follow all manufacturer instructions included with your plane radio servo s batteries and engine Aeroworks manufacturing 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 Aero2. am 13 Determine the vent line hole location at the en 15 Feed vent line tubing through engine box floor gine box floor Mark and drill a hole in floor Cut off excess fuel line It is important to leave enough fuel line to exit out the bottom of the cowling 51 16 Secure fuel pick up line to engine carburetor with small nylon tie 52 RADIO INSTALLATION 1 Gather the radio components as shown below 3 Install regulator in accordance with manufactur Battery Switch Regulator if used receiver ers recommended installations Install battery foam rubber and Velcro one wrap straps using foam padding and Velcro one wrap straps 2 Mountradio switch in accordance with the 4 Proper installation of battery using two Velcro switch manufacturers instructions and hardware straps is shown below Note Ensure switch does not interfere with wings or cowl installation 53 5 Install receiver using foam padding and Velcro 7 Place tape on the antenna and tube this will one wrap strap as shown keep the antenna from backing out of the tube i 6 Install the receiver antenna in the pre mounted 8 Finished antenna installation shown below antenna tube Push the antenna into the antenna Tape antenna to fuse floor if desired tube be sure that the antenna is all the way into the tube Note Placing baby powder on the antenna will aid in sliding it through the tube 54 9 Typical radio installation
3. ap i i r 6 Usea 1 4 drill bit to drill the engine mounting 8 Align mounting template to front of firewall holes Template is now ready for use 35 9 Align mounting template with firewall and tape 11 Remove mounting template from firewall Fire in place wall shown with mounting holes drilled ready for engine mounting Note Use following steps for all types of engine installations 10 Use a 1 4 bit to drill the engine mounting holes 12 Distance from front of firewall to front of in firewall engine prop hub is 6 1 4 36 13 Using mounting bolts and Fender washers mount 15 Tighten mounting bolts and secure engine to engine to firewall firewall Note Using a flat fender washer behind firewall will help distribute the bolt pressure and help prevent the wood from crushing Washers are Not Supplied Note Before installing engine refer to cowl mounting instructions Page 58 Step 3 for making center line reference marks on bottom of cowl and fuselage Performing this step prior to mounting the engine will allow you to mount the cowl to the fuse to make necessary alignment marks 16 Securely tighten the engine to the firewall as shown We recommend using 1 4 20 bolts and lock nuts for engine mounting You may also use blind nuts behind the firewall for engine mounting if preferred 14 Use blue Loctite to secure all mounting hard ware oT Throttle Servo and Choke
4. Gather 4 4 40 stab mounting bolts and 4 6 small rubber backed washers I 62 5 Slide the stab tubes in the fuse stab tube sleeves 7 Mount the cowl using the cowl mounting bolts Long Back Short Front Slide the stabs on the and rubber backed washers The rubber backed stab tubes and connect pushrod to servo arm washers are to prevent the fiberglass cowl from Slide the rubber backed washers on the stab cracking and to prevent mounting bolts from mounting bolts and insert bolts through the stab loosing from normal engine vibration mounting tabs and into the fuse blind nuts Tighten snugly but do not over tighten and crack the stab mounting tabs or the fuse sides fuae 6 Gather 4 4 40 cowl mounting bolts and 4 8 Remove the tape holding in the canopy bulkhead 6 small rubber backed washers hatch Note Some models may not have this removable hatch If your model does not continue to the next steps 63 9 Remove the canopy bulkhead hatch as shown If desired an optional instrument panel and pilot may be installed Note Instrument panel and pilot are not supplied in the kit but may be purchased separately from Aeroworks 10 Reinstall the canopy frame hatch and glue in place as shown Use care not to get glue on the clear plastic canopy Note Epoxy or thick CA glues are recommended 11 Gather the 4 4 40 hatch mounting bolts and 4 6 small rubber backed washers Note It is hi
5. engine instructions including break in and tun ing completely Prop balancing Ensure prop is properly balanced prior to mounting on engine Flight Controls Ensure all flight controls are free from binding and are centered Check that all hinges are tight and will not pull out Control linkages must be rigid and tight and have no slop Confirm proper direction of ai lerons rudder and elevator Experienced fly ers have lost airplanes due to reversed ailer ons Right roll is right up left down Left roll is left up right down Batteries Transmitter ignition and receiver bat teries are fully charged Fasteners Check all engine bolts wing bolts hatch bolts servo screws control horn bolts wheel collars and clevis keepers are tight and secure Covering Check all covering and seams are sealed and secure Radio Check trims set to neutral and controls centered Check rate and condition switches set properly Check the receiver antenna is fully extended and not reversed on it self Range check Doarange check with and without the engine running in accordance with the ra dio manufacturer instructions If there is in sufficient range or a large reduction with the engine running do not fly until it 1s resolved Fuel Fill the fuel tank before each flight Aerobatics The 50cc EXTRA 300LP ARF QB is capable of any aerobatic maneuver After you gain some confi dence and little experience flying the airplane you
6. trol throw Brass spacer goes between servo arm and ball link Pushrods have both left and right hand threads This allows for easier fine adjustments during final setup Be sure to thread ball link correctly onto pushrod Ball links are self taping and can be used on either Pushrod Control Horn Installation 1 Gather the elevator control linkage parts as ends of the pushrod Once ball link has been shown below 2 pushrods 4 ball link assemblies threaded only rethread it onto the same direction 2 brass spacer 2 flat washer 2 left and 2 right threads side control horns and 12 2 6 x 16mm wood screws 3 Correct installation of ball link to servo arm shown below Note Flat washer will prevent ball link from coming loose from brass ball FLAT WASHER ay 15 4 Place the control horns over the predrilled 6 Mount the control horn using six wood screws mounting holes MEME 5 Usea drop of thick CA glue on each screw to 7 Correct installation of elevator servo linkage to prevent screws from loosening due to vibration elevator control horn shown below as shown 16 10 Tape leading edge of the elevator balance tab to the leading edge of the stab in the neutral posi tion Plug the elevator servo into the receiver and turn radio on Ensure the servo trim and sub trim are in the center position Attach the stab and elevator to the fuse and bolt in place Using center nut adjust the length of t
7. 22 Plug the rudder servo into the rudder channel of tube to help secure the cable the receiver and power up Turn on transmitter to center rudder servo Ensure servo trim and sub trims are centered Note On metal geared servos use blue Loctite for all Servo arm mounting screws 24 23 Tape the rudder balance tab to the top leading 25 Thread the rudder cable through a brass swage edge of the vertical fin in the neutral position as tube then the threaded coupler and back shown This ensures the rudder is straight when through the brass swage tube on both sides Pull the cables are attached light tension on the cable through the coupler on both sides as shown The loop through the cou pler should be approximately 1 2 long 24 Using an X ACTO knife clean away any burrs 26 Loop the cable back through the brass swage from brass swags This will allow the rudder tube and tighten the second loop through the cable to pass through brass swage easily brass swage tube as shown 25 27 Crimp the brass tube with a crimping tool or pli 29 A drop of thin CA may be applied to the swage ers tube to help secure the cable 28 Cut off access cable as shown Tail Wheel Installation 1 Gather the tail wheel parts shown below Tail wheel strut leaf spring 3 tail wheel mounting screws Steering tiller 2 tiller mounting screws and 2 steering springs 26 2 Align rudder tiller steering arm with pre drilled 4 Mount
8. AANA MARARN ANAA h vn Lulu bunt 4 Aligning center lines of template and fuse Tape the template to the bottom of the fuse with the back edge of the template flush against the aft edge of the recessed cowl mounting ring 5 Using a hobby knife roughly cut a hole for the muffler exhaust stacks to pass through Note This will allow you to pull the template up next the engine cylinder head 6 Mark Cowl Side on the top side of the tem plate It is very important that the template does not change position when attached to the cowl 58 7 Trace around the head of the engine being care 9 Use a hobby knife to cut out the hot air exit ful to keep the template in the same location opening as shown 8 Remove template and mark the hot air exit hole 10 Check the fit of the template at this time It may as shown We recommend enlarging the hole for be necessary to make small adjustments to the the cylinder head approximately 1 4 to provide cutout to get it to fit properly adequate cooling Measure and mark 1 1 2 from the rear of the template S joes 59 11 Fit template flush with rear of cowl and align 13 Remove the template and use a rotary cutting center marks of template and cowl Tape tem tool and sanding drum to cut out the openings in plate to the bottom of cowl Use a felt tip marker the cowl to transfer the template cutout pattern to the cowl and mark cut location Note Take car
9. Installation 3 Assemble ball link to threaded end of pushrod l Gather the left and right plywood throttle and Note Thread ball link half way onto pushrod to choke servo mounting trays the throttle and allow for proper adjustment during final installation choke servos servo arms and pushrod parts as shown below 2 x 4 40 metal rods threaded at one end 4 x 4 40 ball links and hardware 4 x brass spacers 2 x 4 40 threaded solder couplers 2 x 4 40 threaded quick links 4 4 Attach throttle pushrod to the carburetor throttle 2 Usea 1 4 bit to drill a pushrod exit hole in the arm with the 4 40 ball link firewall in line with the engine carburetor throt tle arm 38 5 Assemble brass threaded coupler to 4 40 ball 7 Assemble servo arm to servo at 90 degrees to link and ball link and brass spacer to the servo servo Align throttle servo with throttle pushrod arm as shown below and mark servo mounting location Ensure the throttle pushrod will line up with the servo out put arm with no binding 6 Install throttle servo into servo mounting tray 8 Check that mounting position of servo tray will not interfere with fuel tank installation 39 9 Apply 5 minute epoxy to the side of the servo 11 With servo arm still 90 degrees to servo and mount that will be in contact with the engine box throttle arm of carburetor in the center or half side throttle position Mark the cut location for the throttle push
10. Smoke 1 Fuel stopper 1 4 large gas fuel line 4 Brass Barbs 9 2 Servo mounting plates throttle and choke 3 Engine mounting template DA50 3W50 and blank for universal mounting 1 160x70x6mm foam for the Fuel tank 1 140x70x6mm foam for fuel tank 2 300x80x8mm foam for the receiver and battery 10 4x 150mm Nylon Ties 6 8x450mm Nylon Ties 4 12 5x356mm Velcro One Wrap Straps 1 8 x 11 paper material for cutting cowl 6 Rubber grommets fuel line and wire guide 10 12 4 40 ball links ailerons elevators Rudder 10 Brass spacers 10 Flat washers 11 1 Covering White or Silver small patching or repair 1 Covering Pearl Blue or Red small patching or repair 1 Covering Black small patching or repair 1 Transparent covering sealing hinge gaps 12 1 AW Custom Throw Meter 1 AW Custom Rudder Throw Meter 13 1 Assembly Manual with picture folders on CD 14 1 Custom Vinyl decal set 15 24 6mm Aluminum engine stand offs ITEMS NEEDED TO COMPLETE Hardware 50cc Gas engine and ignition Standard or Pitts style muffler Pitts Recommended Engine mount mounting bolts lock nuts and flat washers 4 Spinner and propeller of choice 2 x aileron servos min 180 in oz Torque 6 volt Digital Metal Geared 1 x rudder servo min 180 in oz Torque 6 volt Digital Metal Geared 2 x elevator servos min 180 in oz Torque 6 volt Digital Meta
11. collar and ties are Not Supplied 42 IGNITION INSTALLATION 1 Gather the ignition module battery switch 3 Usea 1 8 bit to drill the ignition module regulator and installation parts as shown below mounting holes 2 Position the ignition module on the side of the Thread nylon tie through mounting holes engine mounting box and mark the location of the nylon tie holes as shown 43 5 Roll the supplied foam rubber to make a 4 layer 7 Connect ignition module to pickup line of en pad as shown Make the pad slightly larger than gine Secure with Safety Clip safety wire tape the ignition module or other method Ensure the plugs will not come apart from vibration or light tension 6 Mount the engine ignition module using nylon 8 Secure ignition wire with nylon ties as nec tie and foam rubber as shown essary 44 9 Mount ignition battery on opposite engine box 11 Mount switch in accordance with the switch side with nylon tie and foam padding manufacturers instructions and hardware 10 Switch mounting location is at builders discre 12 Mount ignition regulator as desired Secure all tion Mark the location for the ignition switch connectors with tape safety clip or similar using the switch mounting plate for a template Using a modeling knife cut out the switch hole 45 FUEL TANK ASSEMBLY AND INSTALLATION Fuel Tank Assembly 3 Assemble the fuel pick up line rubber stopper
12. model surface with application fluid Windex or soapy water solution 66 8 Spray back side of decal with application fluid 10 Using a plastic squeegee or credit card Spread Windex or soapy water solution decal smooth and remove all excess application fluid Let decal set until dry enough to be able to remove transfer tape with out removing decal Do not leave until completely dry or transfer tape will be difficult to remove ea TAAAOQAI 9 Position decal in proper location Application fluid 11 Pull transfer tape from top of decal Take care will allow decal to be moved slightly not to pull away or damage decal 67 12 Finished decal installation Work slowly and carefully and you will be rewarded with a beautifully finished model MARKS 68 CENTER OF GRAVITY CONTROL THROWS Center of Gravity C G 4 1 2 Back from the wing Leading Edge measured at the wing tip Warning Do not skip this step DT Perey MU AY Balance the 50cc EXTRA 300LP ARF QB with out fuel in the tank with the batteries installed and ready to fly The engine radio servos and battery you use will determine the final weight and locations of equipment Try to balance the model by moving the battery and receiver before adding any ballast Note Model should sit level when lifted from the wing tips Start at recommended CG until you are comfort able with the flight characteristics of the airc
13. rod 10 Install the servo mount to the inside of the en 12 Remove pushrod from throttle arm on carburetor gine box as shown Use tape or clamps to en and cut throttle pushrod to length sure the servo mount does not move until the epoxy sets 40 13 Gather the soldering tools as shown below 15 Solder the threaded brass coupler to the end of the throttle pushrod Note For best results we recommend a high quality Silver Solder like Sta Brite silver solder 14 Lightly sand end of pushrod for best bond 16 Attach the throttle pushrod with the 4 40 ball links and secure Power up the receiver and throttle servo and adjust pushrod for proper op eration Ensure the servo or rod does not bind or jam at closed or full open positions 41 17 If installing a choke servo use the provided 19 We recommend installing the carburetor choke mounting tray and hardware shown below Fol pushrod as shown Use nylon ties to provide lowing same installation steps used for installing support and holding friction for the choke push throttle servo install choke servo rod Place silicon fuel tubing over the wire pushrod to prevent damage from vibration and provide holding friction Place a wheel collar on the end of the pushrod to provide a finger grip 18 If a manual choke will be installed gather the 20 Location of manual choke pushrod shown be choke pushrod ball link wheel collar and nylon low ties as shown Wheel
14. securely This is especially important at the hinge lines as shown for air tight hinge leading edges of the wings and stabs We recom seals mend checking the covering after each flying ses sion 2 Use your covering iron to ensure all edges seams and color overlaps are securely sealed IMPORTANT It is the purchaser user responsibility to check the covering seams and overlaps for se curity and a good seal Aeroworks is not re sponsible for failure of covering seams or over laps during flight This 15 a never ending process that must be done after each flying secession Due to varying temperatures and humidity changes from day to day the covering will continue to loosen and must be maintained WING ASSEMBLY 3 Attach the 6 extension to the servo lead and secure with Safety Clip safety wire tape or 1 The ailerons have been pre hinged and glued to oo pings uw l l apart from vibration or light tension the wing panels and are ready for flight No other steps are necessary for hinging Aileron Servo Installation Gather one wing panel one aileron servo servo mounting screws 1 4 servo arm safety clip and one 6 servo extension as shown below for preparation of the servo installation Safety Clips Available from Aeroworks 4 Fasten the pull string from the servo hole to the 2 Layout the servo on the wing to test fit the in male plug of the servo extension stallation an
15. setup Be sure to thread ball link correctly onto pushrod Ball links are self taping and can be used on either ends of the pushrod Once ball link has been threaded only rethread it onto the same direc tion threads 5 Usea drop of thick CA glue on each screw to prevent screws from loosening due to vibration as shown 3 Correct installation of ball link to servo arm shown below Note Flat washer will prevent ball link from coming loose from brass ball FLAT WASHER BRASS SPACER 12 6 Securely fasten the control horn to the aileron with six wood screws 7 Plug the servo into the receiver and turn radio on Ensure the servo trim and sub trim is cen tered Adjust the length of the pushrod so that the servo arm is parallel to the aileron hinge line and the trailing edge of the aileron is even with the trailing edge of the wing in the neutral posi tion 13 8 Screw servo arm on the servo output shaft Note On metal geared servos use Blue Loctite for all Servo Arm mounting screws Pushrod has been set at a slight offset to allow for maxi mum strength at full deflection 9 Ensure the servo does not bind at either end point at full deflection A 1 servo arm is rec ommended for best results A 1 1 4 servo arm is required for full deflection of the aileron bevel 10 Repeat all the above steps for the other wing STAB AND ELEVATOR ASSEMBLY Elevator Servo Installation 3 Layout the
16. 4 6 bonded washers for the mounting of the Canopy 2 pull pull exit tubes for rudder cable installed 1 Antenna Tube installed 1 Engine box hatch cover installed Left Wing with Aileron covered pre drilled for control horn mounting 2 8 32 blind nuts installed for the wing mounting 2 Aluminum locater pins installed pre drilled for cotter pin 6 pin point hinges installed and glued 1 Aileron servo string installed Right Wing with Aileron covered pre drilled for control horn mounting 2 8 32 blind nuts installed for the wing mounting 2 Aluminum locater pins glued pre drilled for cotter pin 6 pin point hinges installed and glued 1 Aileron servo string installed Horizontal Stabilizer with elevator assembly with 8 pin point hinges glued covered pre drilled for control horns Rudder with 4 pin point hinges not glued covered pre drilled for control horns SUB ASSEMBLIES 1 1 Fiberglass Cowling painted with 2 screw holes 4 4 40 x 15mm hex style bolts for mounting cowling 4 3mm split lock washers for mounting cowling 4 6 bonded washers for mounting cowling 2 1 4mm 7075 Aluminum Main Landing Gear painted 2 5x45mm Axle Bolts 2 M8 lock nuts 4 5mm 1 4 Wheel Collars with set screws 2 85mm 3 5 Dia Main Wheels Lite Type 4 4 40 x 14mm hex style bolts for mounting wheel pants 4 3mm flat washer for mounting wheel pants 4 3mm split ri
17. AEROWORKS 50cc EXTRA 300LP ARF QB Quick Build ASSEMBLY MANUAL TABLE OF CONTENTS Page Aeroworks Contact Information scsiecsiscncccesseas eo p uas Eosue sso us eoo e ao a 3 Introductlol oiseau Ceo oue Rees Dos PERI mI PR e Eon ee PEE 4 aim C onteni per e 5 Items Needed To Complete Re aua I E POE ER ERR HEN RHDSANUEEEE EE M OMNE Tn MEUS 7 Tightening and Re shrinking the Covering c eee eee 8 Check Seams and Overlaps for Good Seal cccccccccsccccccccccccscccccccccccssssssecccscess 9 ME cu AT t 10 5tab and Elevator Assembly 5s iseseessssovesucrsos due vea 14 Rudder and Pull Pull Cable Assembly scssccsccccccsccccccccccccccccccccccccsssssssecs 18 Tail Wheel Installation 26 Main Landing Gear Gear Cuffs and Wheel Pants Assembly eese 30 Engine and Throttle Servo Installation ccce eee eene eene eee noe 34 Ienition Installatloli vea o a evt UPPER FEN DU ERE EHE 43 Fuel Tank Assembly and Installation ecce eee eee eene eee eee eee 46 Radio Install anion eoo earotivo o PESO a UIVEOU E A6 BST 53
18. and metal end caps As shown below 1 Gather the fuel tank parts as shown below Fuel tank hardware brass barbs and fuel tubing 2 Locate the 2 supplied brass fuel barbs Solder a 4 Solder a brass fuel barb to the other end of the brass fuel barb to the fuel line pick up tube This fuel pick up line will keep the weight of the fuel clunk from pull ing the fuel line off the brass tube Note No brass barbs are required for the air vent lines 46 5 Final assembly of rubber fuel stopper with fuel 7 Install the fuel tubing and clunk Secure the fuel pick up tube shown below tubing with nylon ties to the pick up tube and clunk 6 Install air vent tube into rubber stopper and bend 8 Insert the rubber stopper assembly into the tank upward with the vent tube at the top of the tank Note No brass barbs are required for the air vent tube 47 9 Secure the rubber stopper with set screw Take 2 Install a short piece of fuel line and the fuel T care not to strip threads by over tightening set to the fuel pick up tube screw Note Using a heat gun to soften the fuel line will help with the installation of the fuel T Fuel Tank Installation 3 Install the fuel filter fuel pick up and fuel filler lines to the fuel tank 1 Gather the fuel tank parts as shown below Fuel tank fuel tubing foam rubber fuel T fuel filler dot fuel filter and nylon ties Note It is recommended y
19. can cut loose and perform any maneuver you can think of Here is a list of some of the more popular aerobatic and 3D maneuvers you can try Loops and rolls Knife edge flight Stall turns Snap rolls 2 4 and 8 point rolls Slow rolls Spins upright and inverted Flat Spins upright and inverted Harriers upright and inverted Water falls Torque Rolls Rolling circles The sky and your imagination are you only limits FLY and ENJOY AEROWORKS 73 50 cc EXTRA 300LPARF QB NOTES
20. d ensure servo lead is the correct length Note 180 in oz digital metal geared servos are recommended Servo selection can be the difference between a great flying model and a model that will crash Always use brand name high quality servos 10 5 Draw the servo extension through the wing and 7 Install servo with servo mounting screws pull through the wing root rib Note Taping servo lead to the inside of the wing panel will help to prevent lead from dropping back inside of wing panel J pe during transportation l 6 Install servo in servo well with the output arm Pushrod Control Horn Installation toward the leading edge of the wing Mark and drill location of servo mounting holes 1 Gather the aileron control linkage parts as shown below 1 pushrod 2 4 40 ball link assemblies 1 brass spacer 1 flat washer 1 left and 1 right side control horn and 6 2 6 x 16mm wood screws for each wing panel 11 2 Assemble the pushrod and control horn assem 4 Place the control horns over the predrilled bly as shown The ball link goes between the mounting holes left and right sides of the control horn sides and is secured with a nylon lock nut Start with the center hole in the control horn The ball link may be moved up or down for more or less con trol throw Brass spacer goes between servo arm and ball link Pushrods have both left and right hand threads This allows for easier fine adjustments during final
21. e time to re tighten the covering you will be re warded with a long lasting beautifully covered model Using your covering iron with a soft sock gently apply pressure and rub in the covering If any bubbles occur your iron may be to hot Reduce heat and work slowly If bubbles persist use a small pin to punch holes in the bubble to relieve trapped air and reheat Use your heat gun with extreme caution Take care not to apply too much heat to one area for long periods of time This may cause the trim colors to over shrink and pull away leaving un sightly gaps on the color lines The trim stripes are especially vulnerable to over shrinking Your model is covered with Ultracote cover ing In case of repairs the colors are Red Silver Scheme Blue White Scheme True Red 866 Pearl Blue 845 Silver 881 White 870 Black 874 True Red 866 Tightening and re shrinking the covering is a never ending process and needs to be checked after each flying secession CHECKING SEAMS AND COLOR OVERLAPS FOR GOOD SEAL 1 Go over all seams and color overlaps with your 3 This is an optional step but is recommended sealing iron Cut strips of clear covering to fit the hinge gaps Use covering iron to seal the clear covering snugly into the bottom of the Note Even if your models covering has no wrin kles out of the box it is still very important to go over all seams and overlaps to make certain they are sealed
22. e not to cut or scratch the cowl Note Pay close attention to the marker you choose Some permanent markers may not be easily removed Also When using rubbing alcohols or other paint removers always test on painted parts before using 12 The cowl should be marked as shown Be sure to 14 Install the cowl and check that everything fits mark all of the lines clearly and carefully to aid correctly and does not come in contact with the in cutting cowl If needed enlarge the cutouts and test fit again until everything fits correctly 60 15 Another view of finished cowl installed on fuse 17 Finished cowl installation show 16 Install fuel vent line on bottom of cowling 18 Different angle of finished cowl installation shown Note Use rubber grommet to keep fuel line from chaffing and cowl from cracking 61 PRE FLIGHT PREPARATION 1 Gather 4 8 32 wing mounting bolts 4 8 rub 3 Install hairpins into both front and rear ber backed washers and 4 hairpins for prepara aluminum anti rotation wing dowels for a tion of mounting the wings second method of wing attachment 2 Slide the wing tube in the fuse wing tube sleeve Slide the wings on the wing tube and plug in the aileron servo connectors Slide the rubber backed washers on the wing mounting bolts and insert bolts through the fuse side and into the wing root blind nuts Tighten snugly but do not over tighten and crack the fuse or wing root wood 4
23. ghly recommended you apply thin CA glue to the front hold down dowels This is a High vibration area and can loosen the front dowels Always check the front dowels are secure before each flying session Us thin CA to secure front hatch hold down dowels 12 Slide the rubber backed washers on the hatch mounting bolts and insert bolts through the hatch mounting holes and into the fuse blind nuts Tighten snugly but do not over tighten and crush the hatch or the fuse sides DECAL INSTALLATION Decal installation 3 Factory placement of decals shown 1 Decals supplied with the kit may vary from the photos below Decal installation instructions are for reference purposes only Gather supplied decals transfer tape ruler scis sors hobby knife plastic squeegee or credit card Windex or Application fluid like Rapid Tac Also a solution of 1 drop of dish detergent to a cup of water sprayed on the model will as sist in proper positioning MORS AEn U WORLD CY Note Clean surface and tighten all covering before any decals are applied 2 Factory placement of decals shown 65 4 Using rubbing alcohol or glass cleaner Clean all 6 Remove backing from decal sheet areas before any decal installation Note Decals and model shown in following steps may very from your model Decal installation will be similar 5 Tighten all covering prior to any decal installation 7 Spray
24. he construction of this model The 50cc EXTRA 300LP ARF QB has been individually hand built covered and painted by trained and experienced craftsmen with over 25 years of manufacturing experience Using CAD design laser cut technology and jig built assures accuracy in all stages of production The 50cc EXTRA 300LP ARF QB is designed for gas engines in the 50cc category The Desert Aircraft 50cc engine is shown in the assembly instructions The aircraft was tested with the Desert Aircraft 50cc and has outstanding performance The final choice of engine 1s left up to the builder A computer radio 1s recommended to allow the pilot to take advantage of the full capabilities of this aerobatic aircraft IMPORTANT Please read through this manual carefully before starting the assembly of your new 50cc EXTRA 300LP ARF QB Inventory and inspect all parts and hardware for any imperfections or damage Notify Aeroworks immediately if there are missing or damaged parts INTENDED USE This plane should not be regarded as a toy This is an aerobatic plane and is recommended for pilots who are beyond the trainer stage and are comfortable with flying an aerobatic sport plane READ WARRANTY READ It is important to notify Aeroworks of any damage or problems with the model within 30 days of receiving your airplane to be covered under warranty All returned parts must be shipped in their original shipping boxes and insured for full replacement value If y
25. he elevator pushrod so that the servo arm 1s 90 degrees to the servo case when it is placed on the servo output shaft Ensure the servo does not bind at either end point at full deflection Repeat the above steps for the other stab and elevator Use center nut for final adjustments 17 11 Finished elevator servo installation shown be low RUDDER AND PULL PULL CABLE ASSEMBLY Rudder Installation 3 Mix epoxy in mixing cup and use a tapered stick mm to apply the epoxy inside the pre drilled holes in 1 Gather the rudder four hinges rubbing alcohol the trailing edge of the fin Apply epoxy to one petroleum jelly and epoxy materials as shown side of each hinge and insert the hinge Use 15 30 minute epoxy to ensure adequate pletely into the hole Ensure the hinge axis is working and cleanup time vertical and parallel to the trailing edge of the fin before epoxy cures Wipe away excess epoxy with alcohol wetted wipes 2 Prep all hinges for installation by applying Vase 4 Epoxy the hinges into the fin first and allow ep line petroleum jelly or light oil to the hinge joint oxy to fully cure This ensures no epoxy gets into the hinge during assembly 18 5 Mix epoxy in mixing cup and use a tapered stick 7 Ensure there is no gap between fin and rudder to apply the epoxy inside the pre drilled holes in Allow epoxy to fully cure Check you have full the leading edge of the rudder Apply epoxy to rudder deflecti
26. l Geared x throttle servo Fast Reliable 1 x choke servo Fast Reliable optional Servo extensions 4x 6 1 x I27 2x 24 1 x 6 channel receiver PCM recommended 1 x receiver battery min 6 0 volt 1700ma x ignition battery min 4 8 volt 1700ma 2 x switches with charge jacks Tools Allen wrenches US and Metric Dremel cutting disc and sanding drum tool e Electric drill and selection of bits e Razor saw e Flat head screwdriver e Hobby heat gun e Hobby iron and covering sock e Masking tape Modeling knife e Needle nose pliers or crimping tool e Paper towels e Pen pencil or felt tipped marker e Phillips screwdriver e Rubbing alcohol e Ruler and tape measure e Scissors e T pins e Waxed paper e Wire Cutters Adhesives 15 30 Minute epoxy Blue Loctite Epoxy mixing cups mixing sticks brushes CA kicker optional Thick Thin and Medium CA Rubbing alcohol Wipes Some rubbing alcohols may attack painted parts TIGHTENING AND RE SHRINKING THE COVERING Open your kit slowly and take care not to dam age any parts of the kit Remove all parts from their plastic protective covers for inspection Before doing any assembly or installation of any decals it is very important to re shrink or re tighten the already applied covering Due to the shipping process heat and humidity changes from different climates the covering may be come lose and wrinkle in the sun If you take th
27. llar Use 15 Final installation of wheel pant with two mount blue Loctite on the wheel collar set screw before ing bolts final tightening Note Make sure wheel turns freely without binding or rubbing against the wheel pant Adjust wheel collars in or out until wheel turns freely 14 Slide the lock washer then the flat washer on the 16 Repeat above steps for other wheel and wheel wheel pant mounting bolts Use blue Loctite on pant the bolts before final tightening 33 ENGINE AND THROTTLE SERVO INSTALLATION Engine Installation 3 Locate the laser cut engine mounting template for either the DA 50 or 3W 50 If other engines 1 The 50cc Extra 300LP will accept a wide range are used the Universal template may be modified of engine types The DA 50 rear carburetor for any mounting pattern engine with Pitts style muffler was mounted and used for the test flights 2 DA 50 with 2 1 2 Stand offs Pitts style muffler 4 To modify the universal mounting template to and mounting hardware shown below accommodate your engine of choice Line up the laser etched thrust lines on the template with the Note Mounting hardware is Not Supplied engine thrust lines 2 1 2 stand offs available through Desert Aircraft 34 5 Mark the location of the engine mounting holes 7 Remove engine box top hatch cover on template E s j c TOT d NM gt oJ 1 ur V 1 4
28. n below mounting holes Note 180 in oz digital metal geared servo is recommended Servo selection can be the difference between a great flying model and a model that will crash Always use brand name high quality servos CZ o 85 3995T8 2 11 Install rudder servo with servo screws 13 Pull the rudder cables from rear of fuse to the rudder servo tray Note Cables run parallel down fuse and do not cross each other 12 Feed one rudder cable through the pre installed 14 Using an X ACTO knife clean away any burrs cable exit tube in the rear of the fuse toward the from brass swags This will allow the rudder front of the fuse Repeat for other side cable to pass through brass swage easily Note Loop or tape cable to fuse to prevent cable from being pulled into fuse 22 15 Thread cable through brass swage tube 17 Loop the cable back through the brass swage tube and pull tight alf 16 Thread cable through the threaded coupler hole 18 Crimp the brass swage tube with a crimping tool and back through the brass swage tube as shown or pliers 23 19 Cut off excess cable as shown 21 Attach ball links to the rudder servo arm and then attach the servo arm to the rudder servo as shown Note Use flat washers to prevent link from coming loose from the brass ball B am 2 up H a JER E iae 20 A drop of thin CA may be applied to the swage
29. ng lock washer for mounting wheel pants 4 8 32 x 25mm hex head bolts for mounting main landing gear 4 4mm flat washers for mounting main landing gear 4 4mm split ring lock washers for mounting main landing gear 3 2 Wheel Pants 1 Left and 1 Right Painted 4 4 40 blind nuts installed on the wheel pants 2 per side 2 Gear Cuffs pre mounted painted 1 left 1 right 2 4 40x10mm bolts cuff mounting 2 6 bonded washers 4 1 Tail Wheel Assembly medium 5 1 32mm O D Anodized Aluminum Wing Tube 2 12 5mm O D Anodized Aluminum Stab tubes one front and one rear 4 8 32x25mm Hex head bolts for wing mounting 4 8 bonded washer for wing mounting 4 1 8mm hair pin for wing security attachment 4 4 40x 10mm Hex head bolts for stab mounting 4 6 bonded washers for stab mounting 6 2 4 40 3 two end threaded pushrod with nuts for ailerons 2 4 40 4 two end threaded pushrod with nuts for elevators 2 4 40 x300mmThreaded pushrod throttle and choke 2 4 40 solder coupler throttle and choke 2 4 40 metal clevis throttle and choke 4 4 40 ball links throttle and choke 7 2 1x920mm plastic coated pull pull steel cable 4 3 5x5mm brass pull pull swaging tubes 6 AW double control horns 24 T2 6X16mm Phillips head mounting screws 12 T2 6X12mm Phillips head mounting screws 8 1 750cc 25 oz Fuel Tank assembly Fuel 1 450cc 16 Fuel Tank assembly
30. on before epoxy fully cures trailing edge of each hinge Note Use clear covering for sealing the hinge gaps This is an optional step but is recommended 6 Carefully slide the rudder onto each hinge and Rudder Horn Pull Pull Cable and against the trailing edge of the fin Wipe away e excess epoxy with alcohol wetted wipes Servo Installation 1 Gather the rudder control linkage parts shown below 2 rudder cables 4 ball link assemblies 2 flat washers 4 threaded couplers with lock nut 4 brass swaging tubes 2 left and 2 right side control horns and 12 2 6 x 12mm wood screws 19 2 Gather the rudder control horn parts as shown 4 Place the control horns over the predrilled below 2 ball link assemblies 2 left and 2 right mounting holes side control horns Assemble the ball links be tween the control horns as shown Secure with nylon lock nut Start with the center hole in the control horn The ball link may be moved up or down for more or less control throw 3 Thread brass coupler half way into ball link 5 Usea drop of thick CA glue on each screw as shown 20 6 Mount rudder control horns using six wood 9 Install the rudder servo in the servo cutout with Screws the output shaft to the front 7 Repeat the above steps for mounting the other side rudder control horn 8 Gather one rudder servo mounting screws and 10 Mark and use a 1 16 bit to drill the rudder servo 2 3 4 double output arm as show
31. oning tabs down around the fin 70 7 Secure the tabs to the fin using scotch tape 9 Use the supplied flight control deflection meter to measure the throws in degrees Prop up the tail of the aircraft until the fuselage is paral lel to the table top 10 Use the widest part of the aileron to measure the aileron throw in degrees 8 Degrees are measured at the tip of the boost tab as shown below 11 Use the widest part of the elevator to measure the elevator throw in degrees 71 Control Throw Deflection Table Low Rate High Rate Aileron 1 3 4 or 20 up 2 1 4 or 25 up 1 3 4 or 20 down 2 1 4 or 25 down Rudder N A or 25 left N A 35 left N A or 25 right N A or 35 right Elevator 1 1 4 14 up 1 1 2 or 20 up 1 1 4 or 14 down 1 1 2 or 20 down For 3D flying use the following throws 3D Rate Aileron 3 35 up 3 or 35 down Rudder N A or 45 left N A or 45 right Elevator 4 or 45 up 4 or 45 down We recommend 15 Expo on low rates 30 expo on high rates and 60 expo on 3D rates as a starting point You acan adjust from there to suit your own flying style 22 Preflight Checks Center of Gravity Check CG is set properly Engine The engine should run smoothly at all throttle settings with smooth transition from idle to full throttle without stalling or hesita tion Do not fly an unreliable engine Read
32. ou always use a fuel filter in the fuel line to the carburetor Note The fuel T fuel filter and filler dot are not supplied but are available through Aeroworks 48 4 Use small nylon ties to secure fuel line 6 Install foam rubber pad for fuel tank to rest on Foam rubber will help prevent fuel from foam Note Gasoline will cause the fuel line to expand ing or getting air bubbles from engine vibration over time Always secure fuel lines with nylon ties to prevent them from pulling off during flight 5 Thread nylon ties under tank mounting plate and 7 Install the tank Run the fuel pick up line to the center in position engine Secure the tank with the two long nylon ties trim away any excess nylon tie as shown 49 8 Gather the fuel filler dot and drill bits as shown 10 Drill hole to accommodate fuel filler dot below Note We recommend you start with a smaller size drill bit then increase the bit size to the correct size to fit your filler dot This will help prevent the fuse side from splitting or cracking 9 Mark location of fuel filler dot 11 Correct installation of filler dot shown below 50 12 Feed filler line through dot and plug line into 14 Route the vent line on top of the fuel tank and filler plug as shown secure with small nylon ties as shown This will stop excess fuel from draining out the vent line during an extended down line or when lifting the tail EEE m
33. ou wish to return this aircraft for any reason a 15 restock fee will be charged to the customer In addi tion the customer is responsible for all return shipping cost and all prior shipping cost will not be refunded Parts will be fixed or replaced once the original item is returned at the owner s expense It is the decision of Aeroworks if the item is to be replaced or repaired Aeroworks cannot insure the skill of the modeler and can not influence the builder during the construction or use of this aircraft and therefore will not be accountable for any property damage bodily injury or death caused by this aircraft Aeroworks cannot insure the skill of the modeler and can not influence the builder during the construction or use of this aircraft and therefore The purchaser operator accepts all responsibility of any and all structural or mechanical failures KIT CONTENTS 50cc Extra 300LP ARF OB Materials List Basic Aircraft Parts Fuselage with pre installed vertical fin covered Pre installed and fuel proofed firewall pre drilled for the rudder hinges and tail wheel assembly 4 8 32 blind nuts installed for main landing gear 4 4 40 blind nuts installed for the mounting the stab 4 4 40 blind nuts installed for the mounting of cowling 1 Canopy base painted with 4 4 40 blind nuts installed 1 Tinted Canopy glued on the canopy base and painted installed on the fuselage by 4 4 40 x 14 mm hex style bolts
34. raft You may find this a bit nose heavy at first but that is fine to start with After you are comfort able adjust the CG to suit your flying style in small steps especially when shifting the CG to ward the tail Move the battery or add small stick on weights to the nose or tail as necessary For aerobatic flying a more aft balance point is better For smooth sport flying a more forward CG is better An aircraft that is too nose heavy does not fly well and is difficult to land A tail heavy aircraft is uncontrollable and will likely crash We have test flown the model at 4 1 4 to 4 3 4 C G locations and found the model to fly well at all locations However best flight performance was achieved at the 4 1 2 location Control Throws The amount of control throw should be adjusted using mechanical means as much as possible and then electronically with the radio The control throws are shown in degrees and inches of de flection measured at the widest point of the con trol surface for both low and high rates Use the widest part of the aileron as shown to measure the aileron throw in inches 69 3 Use the widest part of the elevator as shown to 5 Slide the throw meter under the rudder boost tab measure the elevator throw in inches 4 Gather the Rudder Throw Meter Supplied and 6 Center the throw meter on the rudder using the scotch tape centering marks on the meter to aid with align ment Bend the precut positi
35. servo on the fuse to test fit the instal lation and ensure servo lead is the correct length 1 The elevators have been pre hinged and glued to the stabs and are ready for flight No other steps are necessary for hinging Note Use clear covering for sealing the hinge gaps This is an optional step but is recommended Gather the stab and elevator elevator servos mounting screws 1 1 4 Servo arms 24 servo extensions and safety clips as shown below 4 Feed servo extension through the elevator servo 2 Attach the 24 extension to the servo lead and mounting hole in fuse secure with safety clip wire tape or other method Ensure the plugs will not come apart from vibration or light tension Note 180 in oz digital metal geared servos are recommended Servo selection can be the differ ence between a great flying model and a model that will crash Always use brand name high quality servos Safety Clips Available from Aeroworks 14 5 Place servo into mounting hole in fuse with 2 Assemble the pushrod and control horn assem servo output shaft facing toward the front as bly as shown The ball link goes between the shown Mark and drill location of servo mount left and right sides of the control horn sides and ing holes Install servo with servo mounting is secured with a nylon lock nut Start with the Screws center hole in the control horn The ball link may be moved up or down for more or less con
36. shown for heavier en 11 Typical radio installation shown if using a mid gine selections to light weight engine 10 Mount radio battery to battery floor behind fuel 12 Mount radio battery in engine box compartment tank if your engine of choice is in the mid to if your engine of choice is in the light weight light weight category and you will require more category and you will require more nose weight nose weight to achieve the recommended C G to achieve the recommended C G location location 55 13 Typical radio installation shown if using a light weight engine 14 Reinstall engine box top hatch cover 56 MUFFLER INSTALLATION COWL INSTALLATION Use blue Loctite to install the Pitts muffler bolts Remember to always use the engine manufac turer suggested gasket for proper seal Gather the materials as shown below Template material hobby knife ruler tape marker and pencil Securely tighten the muffler bolts to the engine 2 Measure and mark the center of the template material as shown 27 3 Measure and mark the center of the bottom of the fuselage as shown Mount cowling to fuse and transfer center line on fuse to bottom of cowl Note You will use this center mark during a later step when aligning template with cowl Cd V z THAN MT mm pom Tus Tt i E ni oad IS 46 29 AN Nw 27 29 M v 2 440915 4 4 amp i m e BONO Loth door Eit EI HR
37. th lock washer then flat washer Use a drop of blue Loctite on landing gear bolts before attaching the landing gear 2 Align mounting holes of main landing gear with pre drilled mounting holes in fuselage mounting plate Note Mounting holes have been offset to ensure proper installation of main gear WE Mounting holes 1 have been offset to ensure correct installation 4 Bolt landing gear strut to fuse with 4 bolts and washers 30 5 Gather the landing gear cuffs mounting bolts 7 Install gear cuff using 4 40 bolt and bonded and bonded washers washer Note There is a right and left gear cuff 6 Slide the gear cuff onto the proper gear strut 8 Repeat process for opposite side gear cuff 31 9 Using lock nut install axle to gear 11 Align the wheel pant slot over the axle bolt as shown Slide the wheel pant slot over the flat sides of the axle bolt and align blind nuts in Note Do not tighten securely yet wheel pants with mounting holes in landing gear When all bolt holes are aligned tighten axle in place 10 Align the flat sides of the axle bolt vertical and 12 Install the inner wheel collar on the axle Use a snug the lock nut against the landing gear strut drop of blue Loctite on the wheel collar set screw and tighten the wheel collar in place Note Do not tighten securely yet Align axle bolt with front of gear 32 13 Install the wheel and outer wheel co
38. the tail wheel steering tiller using two mounting holes at bottom of rudder wood screws 3 Apply a drop of thick CA to the tiller arm 5 Place the tail wheel leaf spring on top of the tail mounting screws before inserting in the pre wheel strut Align the tail wheel with pre drilled drilled holes mounting holes on the bottom of the fuse 21 6 Placea drop of thick CA on tail wheel strut 8 Attach the steering spring to the rudder tiller mounting screws before inserting in the pre Center the spring between both tail wheel and drilled mounting holes on the bottom rear of the steering tillers fuse 7 Mount the tail wheel struts using three wood 9 Use pliers to twist spring end closed around the screws rudder steering tiller 28 10 With spring centered between tiller arms and tail 12 Tail wheel final assembly is complete wheel centered bend spring wire through tail wheel steering tiller Twist spring end tight with pliers 11 Repeat spring installation for other side 13 Bottom view of completed tail wheel installa tion 20 MAIN LANDING GEAR GEAR CUFF AND WHEEL PANT ASSEMBLY Main Landing Gear Installation 1 Gather the landing gear parts as shown below Landing gear strut 4 8 32 mounting bolts 4 flat washers 4 lock washers 2 gear cuffs 2 4 40 mounting bolts 2 6 bonded washers 2 wheels 2 axles assemblies and 4 wheel collars as shown below 3 Assemble the 8 32 landing gear bolts wi
39. works liability exceed the original cost of the purchased kit Further Aeroworks reserves the right to change or modify this warranty without notice In that Aeroworks has no control over the final assembly or materials used for final as sembly 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 We as the kit manufacturer have provided you with a top quality thoroughly tested kit and instructions but ultimately the quality and fly ability of your finished model de pends on how you build it therefore we cannot in any way guarantee the performance of your completed model and no representations are expresses or implied as to the per formance or safety of your completed model INTRODUCTION Your new 50cc EXTRA 300LP ARF QB 15 a highly aerobatic airplane It is capable of both precision and 3 D maneuvers The aircraft builds easily quickly and precisely due to its state of the art CAD design LASER cut technology and high quality included hardware We hope you enjoy building and flying your 50cc EXTRA 300LP ARF QB Great care has been taken in both the design and manufacturing of the 50cc EXTRA 300LP ARF QB to allow for the strongest and lightest construction possible Only the highest qual ity materials from the covering paint wood and hardware have been used in t
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