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Composite-ARF YAK 55SP

(3m span)

Instruction Manual

Composite-ARF YAK 55SP, 3m

TAVS Technology

Version: 1.0

Summary of Contents for Composite-ARF YAK 55SP

Page 1: ...techsupport composite arf com Composite ARF YAK 55SP 3m span Instruction Manual Composite ARF YAK 55SP 3m TAVS Technology Version 1 0...

Page 2: ...here for you Website http www composite arf com Liability Exclusion and Damages You have acquired a kit which can be assembled into a fully working R C model when fitted out with suitable accessories...

Page 3: ...operate your Yak according to the AMA rules or those laws and regulations governing the model flying in the country of use The engine servos and control surfaces have to be attached properly Please us...

Page 4: ...a safe and successful first flight and many hours of pleasure with your Composite ARF Yak General information about fully composite aircraft structure and design All the parts are produced in negativ...

Page 5: ...vide a rock solid servo mounting and linkage system The wings are attached to the fuselage with the 4 threaded aluminium dowel anti rotation pins with 4 plastic nuts inside the fuselage If the alumini...

Page 6: ...luminum tube and one 10mm carbon anti rota tion pin each Servo Screws Fix all the servos into the milled plywood servo mounts using the 2 9 sheet metal screws provided in the kit not the standard scre...

Page 7: ...and elevators and Aluminium servo out put discs for the rudder servos 3 pieces It is mandatory to attach the included phenolic servo extension arms for all 3 rudder servos to metal servo output discs...

Page 8: ...ues We highly recommend that you use either a slow minimum 30 minute cure epoxy resin and milled fibre mixture or a slow filled thixotropic epoxy for gluing highly stressed joints eg Hysol 9462 The se...

Page 9: ...te lighter fuel like Ronsonol or equivalent This does not dam age the paint as Acetone and many other solvents will and this is what we use at the factory At Composite ARF we try our best to offer you...

Page 10: ...ore starting construction it is a good idea to check inside the fuselage for any loose glass fibres that could cut your hands and a quick scuff over any of these with a coarse Scotchbrite pad will rem...

Page 11: ...of the carbon legs You can use any 5 main wheels of your choice Kavan wheels are very lightweight but not very durable on asphalt runways and Dubro wheels are a little heavier but much more solid and...

Page 12: ...that are glued inside the fuselage photo right Tape the cowl into position and drill the 3mm holes 7mm from the back edge of the cowl inserting a bolt in each after you have drilled it to maintain per...

Page 13: ...s This system has been very well proven on all of our aerobatic planes and is a strong and rigid solution Fitting the clear canopy into the frame can be a little bit tricky and this is a step by step...

Page 14: ...icker you will immediately fog the clear canopy Now that the canopy is fixed in position and cannot twist or warp anymore you can carefully remove the canopy frame from the fuselage and use a speciali...

Page 15: ...n the phenolic hinge posts but after the first 2 or 3 flights they will free up com pletely and give smooth movement During final assembly secure the inboard ends of the hinge tubes with small pieces...

Page 16: ...ality properly engi neered arms and are available from many good hobby stores If using the SWB arms you may need to reduce the thick ness of them a little at the end so that the supplied alumini um cl...

Page 17: ...and you can easily achieve 50 degree throws if you wish Rudder The rudder is completely finished at the facto ry with the dual phenolic rudder horns glued in and the phenolic hinge posts aligned and s...

Page 18: ...ay in the neutral position Make sure that the slots are facing forward on the rear phenolic arm When the glue has cured drill thru the arms and discs and secure with 2 of the M2 bolts and nuts on the...

Page 19: ...on using the pull pull wire and then adjust and open up the slots with a small file as needed The slots should be about 3mm high and 35mm long Make the pull pull wires from the hardware supplied with...

Page 20: ...in flight Servo Choice If you chose to use only 2 servos for each aileron then one of these must be installed in the rear position of the inner phenolic mount and the other in the outer phenolic mount...

Page 21: ...full metal servo arms for the aileron controls and we always use the SWB double loc arms shown here These arms clamp onto the servo output shaft with no lost movement play at all We used 1 5 arms on t...

Page 22: ...servo arm slots that we have already made in the bottom wing skin Check that the servo output arms are aligned with the dual phenolic aileron horns and correct any misalignment by adding thin plywood...

Page 23: ...ind that the centre will be 188mm from the inner surfaces The Composite ARF Yak only needs 1 1 5 degrees right thrust so the motor only needs to be offset to the pilots left by 5mm to have the cor rec...

Page 24: ...m 17 5 back from the front of the fuselage No other support is needed Cut eight 20mm lengths of the hard silicone tube provided and insert into the milled slots in the corners to make the isolation mo...

Page 25: ...ned pipes in the muffler compartment but it is too short for full length pipes If you wish to fit pipes then you will need to extend the back of the compartment by about 150mm 6 and reposition the Rud...

Page 26: ...nk glue a scrap balsa block at the front of the tank base to stop the tank moving forwards Secure the fuel tank to the tank base with cable ties through the milled slots as shown in the R C installati...

Page 27: ...It s your choice but the dual Nicad and powerbus installation does give extra peace of mind and protects your investment and therefore this is what C ARF recommend and have shown here The PowerBox pow...

Page 28: ...ties or by gluing a plywood stick across 2 large holes in the mount ing plate using 2 rubber bands around the Rx case see photo above RX Antenna The Rx antenna was routed to the side of the fuselage...

Page 29: ...ns in the wings are secured together with tape or a short length of heatshrink tubing as shown here Also tape down any loose cables that could get trapped or caught in linkages Throttle servo You can...

Page 30: ...ine clamp or cable tie Don t miss this small detail it could cost you your plane We use the normal 3 tube plumbing system one from the clunk to feed the motor one out of the bottom of the plane vent o...

Page 31: ...inner central bolt and a finger tip under the rudder and if necessary add a small weight to the light wing tip to make it track correctly Engine Thrustline Initially downthrust should initially be set...

Page 32: ...mize the throws to whatever is mechanically possible even more up than down if you wish General Your Yak has very large control surfaces This makes it very sensitive and reactive It is always possible...

Page 33: ...g chord allows a very wide CG range which means that it can be flown very tail heavy doing even more exciting manouvers than other planes Now since the engine manufacturers have been much slower than...

Page 34: ...ist Fuselage Pack Quantity Description 4 Allen Bolt M6 x 55mm engine mounting 12 Washer M6 large engine mounting 4 T nut M6 engine mounting 8 Air vent Louvre aluminium painted to match cowl 8 Allen Bo...

Page 35: ...e 1 All Thread M3 x 75mm linkage 1 Allen bolt M3 x 20mm to secure ball link to elevator horns 1 Stop nut M3 to secure ball link to elevator horns Rudder Pack Quantity Description 4 Allen bolt M3 x 16...

Page 36: ...Cad crossover unit product 960200 PowerSwitch pair 20A for dual NiCads product 960300 Please check our website www composite arf com for current availability of options and accessories Composite ARF Y...

Page 37: ...ts of Wing Hardware pack 2 sets Contents of Stab Hardware pack 2 sets above Contents of Rudder Hardware pack above Contents of Spare Hardware pack above Contents of Milled wood and Phenolic pack above...

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