SIG FOUR-STAR 60, Assembly Manual, Page: 5 / 18

5
wick its way through the entire surface of the hinge and the
surrounding wood, allow 10 minutes before flexing the aileron.
Any spilled glue can be removed with Sig Debonder.
After sufficient time has passed, flex the aileron up and down
several times to create free and easy movement. You must also
pull on the aileron at each hinge location to be sure that the hinges
are firmly bonded in place. Repeat this process to attach the
aileron to the other wing.
Installing the ailerons, horns, and pushrods:
For the following steps you will need:
• 2 each 4-40 x 8” Threaded Rods
• 2 each 4-40 Metal R/C Links
• 2 each 4-40 Solder R/C Links
• 2 each 4-40 Hex Nuts
• 1 each Short Right Nylon Control Horn
• 1 each Short Left Nylon Control Horn
• 4 each #2 x 3/4” Sheet Metal Screws.
❑
1) We recommend using servo output arms for the aileron
servos. Install the arms to the two aileron servos so that when
they are in neutral the arms are pointing toward the center of the
wing (towards the fuselage). The arms should be at 90
O to the
servo when the aileron control stick on the transmitter is in neutral
and the transmitter trims are in neutral as well.
❑
2) Screw one of the 4-40 hex nuts all of the way onto one of
the 8” 4-40 threaded pushrods. Now, thread one of the 4-40 Metal
R/C Links onto the pushrod so that about 3/8” of the threads on the
rod are showing past the barrel of the connector.
❑
3) Attach the 4-40 link and pushrod to the second to last hole
in the aileron servo output arm. Position the pushrod so that it is
90
O to the aileron hinge line. Use a felt tip pen to mark the pushrod
location on the trailing edge of the wing just ahead of the aileron.
❑
4) Swing the pushrod out of the way and locate the control
horn. There are a left and right horn and the base of the horn
should point toward the inboard (fuselage) end of the wing.
Set the control horn on the bottom of the aileron. The upright arm
of the horn should be parallel with the servo and should line up
with the pushrod pen mark on the wing to establish the proper left
to right position. Now, the horn should be moved forward or aft
until the linkage holes in the upright arm are directly over the hinge
line.
❑
5) Use a 1/16” drill bit to drill through the aileron for the control
horn screws. Use two of the #2 x 3/4” Sheet Metal Screws to
attach the control horn to the wing by screwing them into the two
holes in the nylon retaining plate that is molded with the horn. The
aileron should be sandwiched between the control horn on the
bottom and the retaining plate on the top. After the screws are
securely tightened, the excess screw that is extending past the
retaining plate can be cut off with a pair of side cutting pliers.
3/8”