Great Planes Fokker Dr-1 60 ARF - GPMA1380 - Manual (Page 13)

❏ ❏
17. Use a 90 degree ruler to find the location of the
control horn. Mark the holes for the control horn's screws.
Drill the holes with a 1/16" [1.6mm] drill bit. Harden the holes
with thin CA. Install the control horn using two 2-56 x 3/4"
[19mm] socket head cap screws and the nylon mounting
plate on the other side of the control surface.
❏ ❏
18. Enlarge the hole on the servo arm with a Hobbico
Servo Horn Drill (or a #48 or 5/64" [2mm] drill bit). Center the
servo arm. Thread a clevis approximately 20 turns onto a
0.074" x 6" threaded one end pushrod. Slip a silicone
retainer on the clevis and connect the clevis to the aileron's
control horn. Center the aileron and make a mark on the
pushrod where it meets with the servo arm's hole. Bend the
pushrod 90 degrees up and install a Faslink on the pushrod
as shown in the sketch. Cut away any excess wire, leaving
1/16" [1.6mm] protruding from the Faslink.
❏ ❏
19. If you have not done so, go back to step 1 and
assemble the other side of the wing the same way. Make
sure to connect the left aileron servo lead to the “Y” harness
and to pull the servo lead through the wing. Most of the “Y”
harness will stay hidden in the wing. Only the servo lead that
goes to the receiver should stick out the hole in the center of
the wing.
❏ ❏
20. Find two 90 degree brackets and two #4 x 3/8"
[9.5mm] screws. There is one 1/16" [1.6mm] hole pre-drilled
on the bottom side of the wing, third bay in from the wing tip
on each end. This is where the 90° brackets are to be
installed with the #4 x 3/8" [9.5mm] screws. Before you
install the brackets, harden the holes with thin CA. Check the
image shown for bracket placement and orientation. Leave
the brackets slightly loose.
❏ ❏
21. Find four 60 degree brackets and four #4 x 3/8"
[9.5mm] screws. Find four 1/16" [1.6mm] holes at the bottom
of the center section of the wing. Harden the holes with thin
CA. Install the brackets as shown above. Leave the brackets
slightly loose.
FasLink
2-56 (.074") Pushrod Wire
Servo Horn
Correct Incorrect
13