Great Planes Super Sportster 40 MkII Kit - GPMA0205 - Manual (Page 20)

D 5. Mark the location for the throttle pushrod hole on F-1A.
D 6. Use a long drill bit to drill a 3/16" hole through the
firewall at the throttle hole location you marked in step 5.
Drill through F-2. Insert a 10" length of outer pushrod tube
through these holes, leaving about 1/4" protruding past the
firewall. Glue the pushrod tube in place. Attach a ball link
to the throttle arm on the engine, then use a drop of 6-
minute epoxy to secure the nut in place. Screw a ball link
socket onto a 2-56 x 36" threaded wire pushrod. Cut the
pushrod to reach from the throttle to about 1-1/2" past the
throttle servo opening in the servo tray. Insert the pushrod
through the outer pushrod tube, then attach the ball link
and socket.
Note: We used a 10 oz. Great Planes tank (#GPMQ4104)
in our prototypes. By using the supplied right-angle fuel
supply tube, the fuel can be routed to the top of the firewall
without the risk of kinking the tube. You may also route the
fuel tube below the forward crutch to make fishing the tubes
a little easier. The choice is yours.
D 7. Temporarily install the fuel tank. It's a lot easier to see
what is happening at this stage of construction. Decide
where you want the fuel and vent tubes to exit the firewall
and mark the locations. Remove the tank and drill two
15/64" (or 7/32") fuel tube holes through the firewall at the
locations you marked. Re-install the tank and connect the
fuel tubes. Check for kinks and rectify any problems
before proceeding.
Install Optional Nose Gear
(Skip for the standard taildragger)
You will need that are not included:
D 5/32" straight nose gear wire with coils
(Great Planes #GPMQ4262)
D 5/32" adjustable axle
(Great Planes #GPMQ4280)
D 5/32" wheel collar and set screw
(Great Planes #GPMQ4306)
D 5/32" steering arm with collar
(Great Planes #GPMQ4264)
D 15" pushrod tube and .074" wire
(Great Planes #GPMQ3716)
Refer to these photos when performing the following steps
D 1. Slide the 5/32" steering arm with its wheel collar
over the short end of the nose gear wire.
D 2. Insert the nose gear wire into the bottom hole of the
engine mount.
D 3. Slide a 5/32" wheel collar onto the wire, then push
the wire into the top hole in the engine mount.
D 4. Check that the nose gear spring coils clear the
firewall then tighten the wheel collar and steering arm on
both sides of the engine mount as shown in the photo.
This will lock the nose gear in position.
D 5. Drill a 3/16" hole through the firewall and F-2 that
aligns with the steering arm and the rudder servo.
Important: The steering pushrod must be on the
opposite side of the firewall from the throttle.
D 6. Insert a 15" length of outer pushrod tube through
the holes and glue it in position, flush with the forward
side of F-1A.
D 7. Enlarge the last hole in the steering arm to 5/64"
D 8. Make a bend in the pushrod wire 1/4" from one
end. Insert the unbent end of the pushrod into the outer
tube, then work the bent section into the enlarged hole in
the steering arm. Test the linkage for free movement.
We will cover final installation and servo hookup later
in this manual.
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