QuiQue's Aircraft YAK-54 Assembly Manual page 13

Use the Dubro heavy duty dual pull-
pull system Cat. No. 882. Insert the
8-32 threaded rod for the rudder
control horn.
Step 3
Take the screw out and apply a thin
layer of epoxy/alcohol inside the hole
to strengthen the inside walls.
Step 4
Proceed with final installation of
Dubro Cat. No 882. See Figure 4.
Figure 4
Aileron Horn Installation
Step 1
Locate the aileron control horn hole
and servo locations that are covered
by ultracote. Remove the covering
from bottom by xacto knife.
Step 2
Use the Du-bro Heavy Duty Control
Horn System, Cat. No. 866. However
the 2" 8-32 socket head cap screw
provided is not long enough for the
aileron control horn. Purchase
8-32X3 round Slotted/Phillips Zinc
Machine screw at Lowes or similar
supplier. We include those screws in
our optional Du-Bro package.
Step 3
Use epoxy and screw the machine
screw into the hole provided until it
reaches the top of the aileron. Cut off
the head of the screw leaving a
length of the control horn measured
to the bottom of the aileron as
follows:
For the inboard horn, 1 inch, for the
outboard horn 1-1/4 inches. After
you have installed the servos, you
are ready to hook up the linkage.
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