GREAT PLANES YAK-55M Yakovlev Instruction Manual - Page 6
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PREPARATIONS
❏
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 4.
❏
2. Remove the parts from the bags. Use a covering iron
with a covering sock on medium heat to tighten the covering if
necessary. Apply pressure over sheeted areas to thoroughly
bond the covering to the wood.
ASSEMBLE THE WINGS
Do the right wing first so your work matches the photos the
first time through.
❏ ❏
1. Install a 9" servo extension onto the servo lead. Secure
the extension to the lead with tape, a piece of shrink tube or
some other method to keep them from coming unplugged.
❏ ❏
2. Insert the servo lead in the aileron servo opening
and route the lead out the root of the wing. NOTE: The
Futaba S3150 servo is 2mm longer than the S3115 servo. If
the S3150 servo is installed, both ends of the aileron servo
opening will need to be trimmed approximately 1/32" [1mm].
❏ ❏
3. Install the servo into the servo opening. Drill through
the servo mounting holes with a 1/16" [1.6mm] drill bit.
Remove the servo from the servo opening. Install and then
remove a servo mounting screw into each of the holes you
have drilled. Apply a drop of thin CA into the holes to harden
the threads. Once the glue has cured install the servo into the
servo opening. Do not install the brass grommets or rubber
bushings in the servo. Secure the servo to the wing with the
servo mounting screws and #2 flat washers. Center the servo
and then install a servo arm as shown. The arm should be
pointing towards the wingtip, parallel with the aileron hinge line.
❏ ❏
4. Thread a nylon clevis, 16 turns, onto a 6" [152mm]
wire pushrod.
CORRECT
Hinge Line
❏ ❏
5. Attach the clevis in the outer hole of a nylon control
horn. Place the control horn in line with the outer hole in the
servo arm. When positioned properly the control horn will
6
INCORRECT
Hi
Hinge Line