You will need to utilize servo arms that are long
enough to give adequate clearance from the top of the
wing. The prototype utilizes 1” SWB metal servo
arms.
Install servos, using flat headed wood screws pro-
vided. A nut tied to a string will be useful in fishing
wires through the wing.
Locate linkages. The flap uses the 70 mm linkage,
while the aileron uses the 95 mm linkage. If you use
the SWB arms, you will need to replace the clevis
ends on the linkages provided with Dubro 4-40 heavy
duty ball links, as the SWB arm uses a 4-40 bolt.
Servo positioned in pocket. Note SWB arm.
As you did with the elevator servo, attach linkage and mark position of
control arm on aileron and flap.
Thread the Dubro arm fully on the linkage and apply a
small drop of thin CA to the end to the threads.
As you did with the elevator linkages, mark the posi-
tion of the control arms, allowing for the offset of the
linkage ball ends.
Grind slots.
Construction Manual
Der Jet F9F-8 Cougar Page 36
