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3. Position the engine in the mount so the distance from
the front of the firewall to the front of the drive washer
measures 6-1/4" [159mm]. Mark the location of the engine
on the mount. The Great Planes Dead Center
(GPMR8130) works well for this. Drill through the marks you
have made on the engine mount with a #29 or 9/64" [3.6mm]
drill bit. Tap each of the holes with an 8-32 tap.
❏
4. Install the engine onto the mount with four each, 8-32
x 1" [25mm] SHCS, #8 flat washers and # 8 lock washers.
❏
5. From the 12" [305mm] balsa tri-stock cut three lengths
to fit the back of the fuel tank former. Glue them in position
as shown.
❏
6. Glue the fuel tank former in position as shown.
❏
7. Install silicone fuel tubing (not supplied) onto the
aluminum tubes from the fuel tank. The line with the fuel
clunk will feed to the fuel inlet at the needle valve. The vent
™
Hole Locator
will attach to the pressure tap on the muffler and the third
line will be used for filling and de-fueling the fuel tank. Insert
the fuel plug included in this kit into the fill line. If you choose
to use some kind of an external fuel valve, follow the
instructions with your particular brand of fuel valve.
❏
8. Install the fuel tank into the fuselage with the neck of
the tank through the firewall. Hold the fuel tank in position
with two #64 rubber bands.
❏
9. Mark the location on the firewall where the throttle
pushrod will pass through. Drill a 3/16" [4.8mm] hole on that
mark. Locate the 12" [305mm] plastic pushrod tube. Cut it to
a length of 8" [203mm]. Roughen one end of the tube with
220-grit sandpaper. Install the un-sanded end of the
pushrod tube into the front of the firewall through the hole
you drilled in the firewall and through the hole inside the
fuselage, in the fuselage former. Apply CA to the roughened
end of the plastic tube, gluing it into the firewall.
15
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