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Aviation Models 30% YAK 54 Assembly Manual

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30% YAK 54 Assembly Manual
For assistance contact :
Aviation Models
25022 104th Ave SE, Suite E
Kent, WA 98030
Product Information:
Ordering Hotline:
Copyright © 2005 by Aviation Models, Inc. All rights reserved.
please report errors to sales@toc1.com
Aviation Models
Second edition rev. 5.12.12
1-253-332-0786
1-866-877-8621
1

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Summary of Contents for Aviation Models 30% YAK 54

  • Page 1 For assistance contact : Aviation Models 25022 104th Ave SE, Suite E Kent, WA 98030 Product Information: 1-253-332-0786 Ordering Hotline: 1-866-877-8621 Copyright © 2005 by Aviation Models, Inc. All rights reserved. Second edition rev. 5.12.12 please report errors to sales@toc1.com...

  • Page 2: Warranty Information

    Warranty Information: Aviation Models, Inc. guarantees this kit to be free of defects in both material and workmanship at the time of purchase. This warranty does not cover any compo- nents damaged by use or modification. In no case shall Aviation Models, Inc. li- ability exceed the original cost of the purchased kit .

  • Page 3: Specifications

    Warning. This is not a toy. If not properly controlled it can cause injury or death and property damage. Included Hardware: Aluminum spinner, fuel tank, aircraft grade aluminum wing-tube, aluminum main gear, rubber wheels, tail wheel bracket, alumi- num servo arms, aluminum stab tube for removable stab, control horns, hinges, wheel pants, SAE bolts and nuts, much more.
  • Page 4 Table of Contents Page Subject Open and inspect everything Mount the engine 10 Hinge the control surfaces 12 Mount the hatch and canopy 13 Mount the horizontal stabilizers 13 Install the control horns 14 Install the elevator & aileron servos 16 Throttle and (optional) choke servo installation.

  • Page 5: Using This Manual

    30% Yak 54 Assembly Manual Step 1. Open and inspect everything This section should be fairly self explanatory. In the large box you should have a fuselage with hatch., wing tube and dual stab tubes, the elevator/stab assemblies, the rudder, cowl, wheel pants, canopy, and a package with the landing gear, tail wheel bracket and miscellaneous nuts and bolts.
  • Page 6 Known issues and improvements There are a few areas where, at this unassembled stage, you can improve the final results of your assembly project. There are many items that cannot be addressed on the assembly line due to cost and possibly because not every improvement would be welcomed by every builder.
  • Page 7 plane with a 60cc(4.0 lbs) on the front, and it had an insane amount of zip. With HiTec 5945’s on the elevators, pull-pull rudder, and the 4.0 lb. engine on the front, the CG came out right on the factory recommendation without any batteries inside. Simply place one battery right in front of the wing tube, and one right behind and your CG will be very close.
  • Page 8 Now, let’s calculate the proper engine box length for your setup. Cowl length (minus) engine length = engine box length EXAMPLE: CL = 11 3/4” EL = 5 15/16” 11.75 - 5.94 engine box = 5.81 now let’s add ¼” so our prop will _ .25 have a little clearance from the cowl 6.06...
  • Page 9 Next mark your firewall with center lines. Label the firewall “Top” and “front“ with a pencil. Now measure & mark the last 2 lines as shown. The ¼” offset is to countera c t t he right thrust. This will bring the prop shaft back to the center of the cowl as it exits.
  • Page 10 After you glue the firewall to the engine box sides, reinforce it with 1/2” triangle stock on the inside of the firewall-above and below mid-plate. Drill out the center hole so that the carburetor passes easily through the firewall. If you want it to be super strong, bolt 2 small pieces of aluminum angle to the front (see diagram).
  • Page 11 Make sure the bent hinge is able to go perpendicular to the edge (see picture). When the glue is dry, do the same thing with the mating surface, glue the hinge legs into the holes provided. Keep the surfaces as close together as possible to minimize gaps.
  • Page 12 Mounting the Hatch & Canopy The hatch mounts to the fuselage by two tabs on each side that are at- tached at the rear of the hatch. They are already built into the hatch and should have 6-32 blind nuts mounted in them.

  • Page 13: Install The Control Horns

    Install horizontal stabilizer Use a sharp hobby knife to carefully trim the covering around the holes in the fuse for the stab tube and the bolt holes on each side. Slide the aluminum tube(supplied) through the fuse, and slide the stabilizers onto the tubes from each side.

  • Page 14: Elevator Servo Installation

    Elevator Servo Installation Find the open servo bay on the left and right side of the fuselage in the tail. Remove covering. Attach a servo extension to the servo cord long enough to reach the receiver, and tie this servo connector to- gether with dental floss or whatever you prefer.
  • Page 15 A servo mounting box is supplied. Glue it together using thick CA. Mount it in the front compartment. Space it from the sidewall to accommodate your en- gine. This was installed with a 60cc engine and spaced with 2 pieces of ¼” X ½”...

  • Page 16: Main Landing Gear Installation

    Main Landing Gear Installation Using the four 8-32 X 1” long bolts provided, and four 8-32 locknuts pro- vided. Mount the landing gear to the main gear plate as shown in the pic- ture. The gear sweep slightly back- ward. Tail Wheel Installation Use a 2.5 mm or 3/32”...
  • Page 17 Use three, 3x4mm self-tapping screws to secure the tail wheel bracket to the holes drilled in the last step. Using two 8-32x3/4” allen bolts, run them through the gear and through the holes in the pant. Take a small square piece of plywood and glue it to the inside of the pant.
  • Page 18 Trim the cut-out in the center of the rudder servo tray to fit your rudder servo. Glue the stiffeners to the bottom of the rudder servo tray. The tray will fit approximately in this position. You may want to delay this process until you have everything installed &...
  • Page 19 The installation of the tank (supplied) and fuel lines is very straightforward. Place a piece of foam under the tank to prevent fuel foaming and strap it with tie-wraps or Velcro. Run the pull-pull wires down the fuselage, and make sure the ca- bles are not rubbing on anything.

  • Page 20: Wing Mounting

    Once the cowl is ready to mount, slide it onto the fuselage and attach using 6-32 bolts and washers p r o- vided. Two screws go through the firewall into the cowl ring – two go through the ring into the firewall. Blind-nuts are already installed to re- ceive them.

  • Page 21: Control Throws

    If you are in doubt about your skills, ask a skilled aerobatic pilot to help you with a trainer cord. Thanks for Purchasing our 30% Yak 54. We hope it provides you with many hours of enjoyment. Good luck! Sammy...

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