Great Planes Super Stearman 1.20 ARF - GPMA1350 - Manual (Page 17)

If you have decided to install four servos in the wings
instead of two, skip the 12 steps in this section and proceed
to, “Build the Carry Handle”.
❏ ❏
1. Locate two small nylon control horns. Cut them
as shown.
❏ ❏
2. On the bottom wing, on top of the aileron is a large
plywood plate. Outline this plate with a felt-tip marker (this
can be wiped away later with denatured alcohol) or outline it
with masking tape.
❏ ❏
3. On the top wing, on the bottom of the aileron is a
large plywood plate. Outline this plate with a felt-tip marker
(this can be wiped away later with denatured alcohol) or
outline it with masking tape.
❏ ❏
4. Measure from the inside edge of the plate out 1-1/2"
[38mm] and draw a line. Measure from the trailing edge of
the aileron in 1-3/8" [35mm] and draw another line.
❏ ❏
5. Position one of the cut control horns so the holes in the
control horn are positioned over the intersection of the two lines
you have drawn. Note that the holes face the trailing edge of the
aileron. Mark the hole locations and drill a 1/16" [1.6mm] hole
through each of the marks. Be sure to drill only through the
plywood plate. Insert and remove a #2 x 3/8" [10mm] sheet
metal screw into each of the holes. Apply a couple of drops of
thin CA into the holes to harden the threads. After the glue
cures, mount the control horn with the screws.
Install the Aileron Connecting Rod
17