Great Planes Shoestring GP/EP ARF - GPMA1328 User Manual

Page 19

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2. Temporarily attach the motor mount to the ﬁ rewall with

two 6-32 x 3/4" [19mm] SHCS or hold the motor mount in
position while you mark the location for cooling holes in the
location shown. There should be an elliptical-shaped hole on
both sides of the mount. Use a rotary tool to cut out the holes
before attaching the mount. When satisﬁ ed with the size and
shape of the holes, attach the motor mount to the ﬁ rewall
using four 6-32 x 3/4" [19mm] SHCS, four #6 ﬂ at washers,
four #6 lock washers, and thread locking compound.

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3. Loosen the screws that hold the aluminum motor mount

halves together and slide them apart as necessary so that the
front of the prop adapter is 4-7/8" [124mm] from the ﬁ rewall.
When adjusting the mount, do not inadvertently create an up
or down motor thrust angle. Use thread locking compound
on the screws that join the motor mount halves.

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4. Assemble the ESC tray as shown. Use pieces from the

included 6x6mm triangle stock to reinforce the tray sides.

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5. Attach the ESC to the tray using three 3x12mm self-

tapping screws. Be sure to harden the screw holes with thin
CA. Other brand ESCs may need to be attached to the tray
with tie straps (not included) or a hook and loop strap.