SIG FOUR-STAR 60, Assembly Manual, Page: 14 / 18

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transmitter trims. Trial-fit the servo arms onto the servos until you
find a spline location that places one of the arms at 90
O to the
servo body. We suggest clipping off the other three arms to avoid
any potential mechanical interference. Press the servo arms in
place.
Press one of the solder links into the outermost hole in the rudder
servo arm, alongside the nylon pushrod. With the solder link and
pushrod tube in this relationship, use a marker pen to make a mark
on the nylon tube for cutting the tube to final length. This length
must leave enough tube to thread the stud end of the solder link
into it about 1/2" or so. Cut the tube with your hobby knife at the
mark just made.
Thread one of the solder link/studs into the end of the trimmed
nylon rudder pushrod. Connect the solder link to the servo output
arm. Adjust the rear nylon R/C link as needed to set the rudder at
neutral. Repeat this process for the elevator servo connection.
❑
7) The throttle pushrod is next. Thread the remaining 2-56
nylon R/C link onto the threaded brass coupler that is soldered to
one end of the braided throttle cable. From the firewall side, insert
the braided throttle cable into the tube housing, pushing it into the
radio compartment. Turn the radio system on and make sure the
servo is traveling in the right direction for low and high throttle. Set
the throttle stick to full low throttle, with the trim lever centered.
Push or pull the throttle cable to close the carburetor on the
engine. Connect the remaining solder link to the throttle servo
output arm. Use a marker pen to mark the cable for cutting, with
sufficient length to fit into the solder links' tube end for the required
solder connection.
❑
8) Remove the cable and cut it at the mark just made (use a
carbide cut-off wheel for this cut) and reinsert it back into the
throttle housing tube in the face of the firewall. Solder the link in
place to the trimmed end of the cable. Connect the solder link to
the servo output arm and the nylon R/C link to the carburetor
throttle arm. Use the radio to test the throttle action and adjust as
needed to obtain true "low" and "high" throttle movement without
any binding.
❑
9) Assemble the wings to the fuselage in preparation for
adjusting the ailerons to neutral. Your kit includes a special shaped
plywood piece called an Aileron Position Guide (APG) that allows
you to precisely measure the neutral position of each aileron - see
picture below of APG in use.
Hold the APG tight against the
bottom of the wing panel at the trailing edge. Adjust the length of
the aileron pushrod until the bottom surface of the aileron is
parallel with the rear of the APG. After the aileron pushrods are
adjusted the 4-40 hex nut must be tightened against the end of the
metal link.
❑
10) After the flight surfaces have been neutralized, take the
time to fit each R/C link with a short length of fuel tubing (medium
silicon tubing is fine for 2-56 hardware) to keep the links firmly in
place to each control horn and servo arm. This common safety
practice has saved a lot of models! Last, make sure that you have
secured the servo arms to each servo with the retaining screws.
SPINNER ASSEMBLY:
❑
1) Locate the black SIG spinner assembly from the kit
contents. This spinner is easy to install, lends a great look to your
finished FOUR-STAR 60 ARF and is ready for use with APC
propellers! Choose the correct adapter ring for your engine.
❑
2) The fit should be a nice slip fit over the engine's prop shaft.
Slip the spinner back plate onto the prop shaft and onto the