QuiQue's Aircraft Semi Scale Yak-54 Assembly Manual - page 10
Wing and Stab Anti-Rotation Pin Installation
Required Tools
FIG 1
• Epoxy and Thin CA
• Sand
Paper
• Acetone or Alcohol
• Micro-balloons
1. Prepare the C/F anti-rotation pins by using coarse
sandpaper and rough up the end of the pin where it will be
inserted in the second rib in the H.Stab. Now clean the pins
with acetone or alcohol to remove any possible grease or dirt.
2. Use 5-10 minute epoxy to attach the pin to the number two
rib that is inside the horz stab. Then use thin C/A to attach the FIG 2
pin to the root rib of the horz stab.
3. Add a little extra fillet of epoxy with micro-balloons on the
inside rib around the anti-rotation pin to insure a strong bond
for the pins. FIG 1
4. If the anti-rotation pins fit too tightly in the fuse sides, it will
be necessary to open the holes in the fuse sides slightly with
a small rat tail file.
Very Important:
After completing the model and flying it, in case you noticed
any play in the stab, please glue the horizontal stab tube in
place in the fuselage with epoxy and micro-balloons.
Wing Rotation Pin Installation
FIG 3
1. Prepare the aluminum anti-rotation pins by using coarse
sandpaper and rough up the end of the pin where it will be
inserted in the second rib in the wing. Now clean the pins
with acetone or alcohol to remove any possible grease or dirt.
2. Install the anti-rotation pins using the following dimensions.
The front pin should measure 10.5mm. Note: FIG 2 the picture
showing the measurement with the ruler may not look like
exactly 10.5 however 10.5 mm is the correct distance from
the root rib to the center hole for the keeper clip at the end
of the anti-rotation pin. Also this ruler starts at zero, yours
may not start at zero. The rear pin FIG 3 should measure 8 mm from
from the root rib to the center of the hole. The front and rear pin
should have the hole in a vertical position.
3. Apply 5-minute epoxy in the second wing rib holes.
Lay the wing flat on the table to insert the anti-rotation pins.
FIG 4
Now insert the pins to the correct depth. Again, check the hole
in the end of the pins to make sure the front and rear pins are
vertical as this is very important
4. Let the epoxy harden. Stand the wing on its wing tip and
run some thin C/A around the root rib. Wipe away any excess.
Do this several times which will help to seal the pin to the hole
in the root rib.