16
The technique for installing the control horns in the elevators is
similar to the aileron control horn installation.
Step 1.
To properly locate the position of the control horn on
the bottom of the elevator, measure inward 1" from the root and
rearward
1
/
4
" from the top of the bevel. Mark this position on
both elevators.
Step 2.
Using a
5
/
32
" drill bit and hand drill, carefully drill a
5
/
32
" hole through the elevators at the above marked position. It’s
important to drill 90° to the elevator’s centerline to the elevator’s
surface. Be especially careful when penetrating through the
bottom surface of the elevator as it’s easy to split out the wood
and rip the covering. Placing a wooden block under the elevator
and drilling slowly will prevent these problems. If you choose to
use the counter sink screws included, counter sink the top of the
elevator to allow the screws to fit flush.
Step 3.
Using an 8-32 tap, thread the holes that you just drilled
in the elevators.
Section 6: Installing the Elevator, Control Horns,
and Linkages
• Stabilizers w/elevators
• (2) 4-40 x
3
/
8
" screws
• (2) tail tubes
• (2) #4 split washers
Not Included
• White UltraCote
®
(GBG870)
• Sealing iron
• #11 hobby knife
Included in Optional Hangar 9 Hardware Package
• Robart Hinge Points (ROB309)
• Rocket City 8-32 Swivel Control Horn (ROC01B)
• (2) Control horns
• (2) 4-40 Ball Links (ROC87)
• (2) 4
1
/
2
" 4-40 Pro-Links (HAN3556)
• Drill with
5
/
32
" drill bit
• 8-32 Tap (DUB363)
• 30-minute epoxy
• Rubbing alcohol
• Paper towels
• Ruler
•
5
/
32
" Hex wrench
Parts Needed
Tools and Adhesives Needed
1
/
4
"
1"
