standard flap horn is constructed from tool steel and music wire.
The upright arm is 1/16X1/4 tool steel brazed to music wire.
Brass bushings are installed on the music wire to help stabilize and
secure the horn to the trailing edge of the wing. If the horn is
constructed with 1/8 inch wire there is a choice of either music wire or
low carbon tweakable wire. The low carbon 1/8 wire gives rigidity with the
benefit of being tweakable. The 1/8 music wire gives the strongest horn
with the most rigidity. These flap horns can also be constructed with a
3/32 inch music wire. If using anything over a 35 to 40 muffled engine for
power the 1/8 wire is recommended. By having the 3/32 inch ID
brass pushrod bushings brazed in place you will be able to solder the
retaining washers on the pushrod without the chance of melting the
bushings loose. If using Rocket City ball links the pushrod bushings can
be replaced with 4-40 tapped holes. The wire arms can be bent to your
specs or they can also be left unbent. The location of the pushrod
holes or 4-40 tapped holes are drilled to your dimensions. The upright arm
of the horn can also be offset for installation into a profile airplane.
The price of this horn is $12.00 ea.