QuiQue's Aircraft Semi Scale Yak-54 Assembly Manual - Elevator Horn Installation
Elevator Horn Installation
Required Tools and Adhesive
FIG 1
• Xacto knife, #11 Blade
• 5-10 minute epoxy
• Alcohol Swab/Alcohol and paper towel
• Sealing
Iron
• Ruler
• Blue
Loctite
• Pliers
The Optional Du-bro package that we offer
will have everything you need to complete
the following steps, otherwise please use
your alternative.
Elevator Horn Installation
1. Locate the elevator servo bay and control horn
FIG 2
hole that is covered by ultracote. Remove the covering
from servo bay and control horn hole using an xacto knife.
Seal edges using sealing iron FIG 1
2. Attach the Du-Bro Heavy Duty Control Horn
System, Cat. No. 866. The hole is pre-drilled
in each elevator to accept the 8-32 X 2”
socket head cap screw.
Use a Dremel cut off wheel and remove the
socket head of the 8-32 socket head screw just
below the screw head so you preserve as much length of
FIG 3
the screw as possible.
3. Clean the screw with alcohol, then epoxy in
place through the bottom of the elevator in the
hard point provided. Insert full depth in the hole with
the head end of the cut off 8-32 screw entering all the
way to the covering film on the top of the elevator.
Be sure that you do not put too much epoxy in the hole and
on the screw.
If necessary, you may want to put a small pin hole in the
top covering just above the hole to allow
the excess epoxy to escape. Clean excess
epoxy with an alcohol swab.
4. After insertion the 8-32 screw should protrude to a length
of 1 inch measured from the bottom of the elevator. FIG 2
5. After epoxy has cured, thread aluminum control horn
support into place using blue loctite. Do not over tighten,
snug tight is fine. FIG 3
6. Repeat above steps to complete remaining elevator.