Model Tech Yak 54 Bedienungsanleitung

1 50cc YAK-54 ARF-QB (Quick Build) ASSEMBLY MANUAL AEROWORKS 401 Laredo St. Unit “D” - Aurora, CO. 80011 www.aero-works.net

10 5. Draw the 18” servo extension through the wing and pull through the wing root rib. 6. Install servo in servo well with the output arm toward

11 9. Aileron servo mounted in bottom of wing. Aileron Control Linkage Installation 1. Gather the aileron control linkage parts as shown below.

12 3. From that mark measure 1/2” toward the wing tip and mark the leading edge of the aileron as shown. This mark will be the center of the ai-ler

13 7. 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

14 Elevator Servo Installation 1. The elevators have been pre-hinged and glued to the stabs and are ready for flight. No other steps are necessary

15 5. Remove servo and use a 1/16 bit to drill servo mounting holes. 6. Install servo with servo mounting screws. Elevator Control Linkage Install

16 3. From this mark measure 1/2” toward the stab tip and mark the leading edge of the elevator as shown. This mark will be the center of the ele-v

17 7. Plug the servo wire into the female end of the 36” extension and secure the servo plugs with safety wire, string, tape, or other method. En-s

18 Rudder Installation 1. Gather the rudder, six hinges and epoxy mate-rials as shown. Use 15-30 minute epoxy to ensure adequate working and cleanu

19 5. Mix epoxy in mixing cup and use a tapered stick to apply the epoxy inside the pre-drilled holes in the leading edge of the rudder. Apply epox

2 TABLE OF CONTENTS Page Aeroworks Contact Information …………………………………………………………... 3 Introduction ………………………………………………………………………

20 2. Install the rudder servo in the forward servo cutout with the output shaft to the rear. 3. Mark and use a 1/16 bit to drill the rudder serv

21 2. Gather the rudder control linkage parts shown below. 2 Rudder cables, 2 threaded metal RC links, 4 threaded couplers, and 4 brass swag-ing

22 6. Crimp the brass tube with a crimping tool or pliers. 7. If additional crimping is needed a small C-Clamp may be used for additional crimpi

23 11. Attach a metal threaded RC link to each threaded coupler. Attach the RC links to the rudder servo arm and then attach the servo arm to the r

24 4. Use a 1/16 bit to drill control horn mounting holes. Note: The control horn mounting holes may have been factory drilled for you. If so, g

25 9. Remove ball links from the rudder control horns. Attach two threaded couplers to ball links as shown. 10. Hold the threaded coupler below t

26 13. Tighten the second loop through the brass swage tube as shown. 14. Crimp the brass tube with a crimping tool or pliers. 15. A drop of th

27 17. Attach ball link to rudder control horn on both sides of the rudder. 18. Adjust rudder pull-pull cables to desired ten-sion by screwing i

28 8. Mount the tail wheel steering tiller using two wood screws. 9. Place the tail wheel spring on top of the tail wheel strut. Position the tai

29 13. Use pliers to twist spring ends closed around the tillers after desired tension and direction adjustments are complete. 14. Tail wheel fina

3 401 Laredo Unit D Aurora, CO 80011 Phone: (303) 366-4205 Fax: (303) 366-4203 Website: www.aero-works.net E-mail: [email protected] Than

30 Main Landing Gear Installation 1. Gather the landing gear parts as shown below. Landing gear strut, 4 mounting bolts, washers, and lock washers

31 5. Use a drop of blue lock-tite on landing gear bolts before attaching the landing gear. 6. Bolt landing gear strut to fuse with 4 bolts and wa

32 Wheels and Wheel Pants Installation 1. Gather the wheels, axles, and collars as shown below. 2. Use a drop of blue lock-tite on landing gear a

33 5. Slide wheel pant over axle and install the wheel pant mounting bolts to hold the wheel pant in alignment but do not tighten wheel pant bolts.

34 9. Wheel mounted on center of the axle. 10. Slide the lock washer then the flat washer on the wheel pant mounting bolts. Use blue lock-tite on

35 Engine Installation 1. Locate the laser cut engine mounting template for either the DA-50 or 3W-50. If other en-gines are used the templates ma

36 5. Gather the engine and mounting hardware as shown. 4 mounting bolts, 4 washers and 4 2 1/2”stand offs. Stand offs available thru

37 Throttle Servo and Choke Installation 1. Gather the left and right plywood throttle servo mounting trays, the throttle servo, and pushrod parts

38 5. Mark the location of the servo mounting tray on the fuse side. 6. Prepare to epoxy the servo mounting tray to the fuse side. Apply epoxy to

39 9. Use a 1/16” bit to drill the servo mounting holes. 10. Install the servo using servo screws. 11. Insert the throttle pushrod through the th

4 INTRODUCTION Your new 50cc YAK-54 ARF-QB is a highly aerobatic airplane. It is capable of both precision and 3-D maneuvers. The aircraft build

40 13. Final throttle servo installation. 14. We recommend installing the carburetor choke pushrod as shown. Use nylon ties to provide support a

41 2. Install the muffler on the engine exhaust port and tighten securely. 3. Gather the following material for making a cowl cutout template. Us

42 6. Mark the center of the template as shown be-low. 7. Mark a centerline on the bottom of the front former as shown. 8. Tape the template to t

43 10. Draw a rectangle around the exhaust stack lo-cations and cut it out with a hobby knife. 11. Pull up the template to the engine cylinder hea

44 14. Tape the template flat against the bottom of the cowl and trace the opening onto the cowl as shown. 15. Use a rotary cutting tool to cut ou

45 Header and Canister Muffler Installa-tion 1. Gather the header and canister muffler parts as shown below. 1 header, coupler, clamps, and caniste

46 4. Dry fit the header and canister to the bottom of the fuse and ensure there is one inch of space from the line just marked to the rear of the c

47 8. Covering material removed from two bottom fuse bays. 9. Use a razor saw to remove the front former cross brace across the canister tunnel. 1

48 12. Dry fit the header and canister inside the tun-nel and ensure there is clearance on all sides. 13. Locate the pre-painted balsa canister tu

49 16. Use a hobby knife to cut the former to fit the bottom of the fuse. 17. Apply thick CA glue to the top and bottom of the canister tunnel for

5 KIT CONTENTS MATERIALS LIST FOR 50cc YAK54 Basic Aircraft Parts: Fuselage with vertical fin – covered, firewall fuel-proofed: (4) 8-32 blind nut

50 20. Iron the bottom covering to securely seal the covering to the bottom of the rear canister tun-nel former. 21. Dry fit the header and canist

51 3. Mark the centerline of the plywood canister mounting bracket. 4. Align the centerline of the plywood bracket with the mounting location prev

52 7. Slide the canister mounting doublers under the fuel tank mounting tray and align the blind nuts with the mounting holes. The canister mountin

53 11. Locate the pre-drilled counter sunk holes in the plywood canister mounting bracket and the two flat washers as shown below. 12. Place the f

54 16. Glue the silicon rubber piece on top of the counter sunk holes on the plywood canister mounting bracket. This will seal the washers inside t

55 20. Use a pair of scissors to split one end of the silicon tubing in half approximately 3/4” deep as shown. 21. After splitting the silicon tub

56 24. Place the canister strap assembly in the canis-ter tunnel as shown. Allow the nylon tie lock to extend out of the tunnel 1/1/2” as shown. 2

57 28. Bottom view of the final canister installation. Header and Tuned Pipe Installation 1. Gather the header and tuned pipe parts as shown belo

58 3. Use a hobby knife to remove the covering from the landing gear cross brace to the pre-installed rear tuned pipe former as shown. 4. Use a ra

59 7. Iron the bottom covering to securely seal the covering to the bottom of the rear tuned pipe tunnel former. 8. Dry fit the header and tuned p

6 Horizontal Stabilizer with elevator assembly (8) pin point hinges (glued)---covered (2) Pilot holes pre-drilled for control horn mounting Rud

60 3. Mark the centerline of the plywood pipe mounting bracket. 4. Align the centerline of the plywood bracket with the mounting location previous

61 7. Trace the shape of the pipe mounting bracket on the piece of flat silicon as shown. 10. Use a hobby knife to cut the flat silicon rubber t

62 13. Use a small piece of medium sand paper to scuff one side of the silicon rubber to ensure a good glue bond. 14. Apply thick CA glue to the s

63 17. Insert the pipe mounting bolts through the holes in the pipe mounting bracket as shown. 18. Locate the nylon tie pipe mounting strap and th

64 21. Prepare to slide the silicon tubing onto the ny-lon tie. The split end of the tubing goes oppo-site the nylon tie lock a shown. 22. Slide

65 25. Place a drop of blue locktite on each pipe mounting bolt. Then place the pipe mounting bracket over the pipe mounting strap and insert the t

66 28. Bottom view of the final tuned pipe installa-tion. 29. Cowl cut out for engine cylinder head with canister and tuned pipe installation. Re

67 3. Insert the rubber stopper into the tank with the small diameter vent tube at the top of the tank. Secure the stopper with a nylon tie. Note

68 4. Install the fuel tubing as shown with small ny-lon ties. You will need an after market fuel T and fuel filling dot. Note: We recommend loop

69 3. Use thick CA to glue the ignition mounting bracket to the side of the engine mounting box. 4. Position the engine ignition on the mounting b

7 Hardware: ITEMS NEEDED TO COMPLETE • 50 CC Gas engine and ignition • Pitts Muffler or header with canister or pipe • Mounting bolts, lock nuts,

70 4. Install the ignition battery and regulator if re-quired as desired. A typical installation is shown below. Secure all wiring from excess vib

71 1. Gather the switches and mounting hardware to be used. We used two switches, one for re-ceiver battery, and one for ignition battery. The ins

72 5. Mount switches in accordance with the switch instructions and hardware. 6. Gather the supplied radio mounting hardware as shown below. F

73 3. Gather the 2 wing mounting bolts and 2 #8 rub-ber large backed washers. Always check for good fit of the wing attachment bolts. We recommend

74 1. Gather the 4 cowl mounting screws and 4 #6 small rubber backed washers. 2. Mount the cowl using the cowl mounting screws and rubber backed w

75 Finishing 1. Decals supplied with the kit may vary from the photos below. Cut the pre printed adhesive backed decals from the decal sheet and a

76 Center of Gravity 1. Warning, do not skip this step! The recommended CG is 4 1/4” back from the wing leading edge at the wing tip as show

77 3. Elevator throw measured in inches. 4. Rudder throw measured in inches. 5. If a flight control deflection meter is available you can measu

78 Control Throw Deflection Table Low Rate High Rate Aileron 2 1/2” or 25˚ up 3” or 30˚ up 2 1/2” or 25˚ down 3” or 30˚ down Rudder 2 1/2” o

79 Aerobatics The 50cc YAK-54 is capable of any aerobatic ma-neuver. After you gain some confidence and little experience flying the airplane you

8 1. 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.

80 YAK-54 NOTES ___________________________________________________________________________ ___________________________________________________

9 1. The ailerons have been pre-hinged and glued to the wing panels and are ready for flight. No other steps are necessary for hinging. Clear Ultr