Great Planes Reactor Biplane .61 GP/EP ARF - GPMA1023 - Manual (Page 14)

14
Mount the Main Landing Gear
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1. Use a 1/2" wrench and a 7/32" wrench (or crescent
wrenches) to fasten a 5/32" x 1-1/4" [4mm x 32mm] bolt-on
axle to each fi berglass main landing gear leg with a 5/16"-24
lock nut.
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2. Use a small metal fi le or a rotary tool with a reinforced
cutoff wheel to grind a fl at spot 1/8" [3.2mm] from the end of
both axles.
5/32" [4mm] WHEEL COLLAR
AND 6-32 SET SCREW
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3. Mount the wheels to the axles with 5/32" [4mm] wheel
collars and 6-32 set screws (and a drop of threadlocker)—
before tightening the set screws, test fi t the pant to the gear
to get the wheel centered. Mount the pants to each gear with
4-40 x 1/2" [12.7mm] Phillips screws, #4 lock washers and
fl at washers (and threadlocker).
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4. Mount the main landing gear to the fuselage with six
4-40 x 3/4" [19mm] SHCS and #4 lock washers and fl at
washers—use a drop or two of threadlocker on the threads
of the screws.
Mount the Motor
If mounting a glow engine,
skip to Mount the Engine on page 16.
Refer to this photo for steps 1 and 2.
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1. Mount your motor to the motor mount (not included) with
three 3 x 10mm SHCS, 3mm lock washers and fl at washers
(not included)—and don’t forget to use threadlocker on the
threads. Mount the motor mount to the fi rewall with four 8-32
x 1/2" [12.7mm] SHCS and #8 lock washers.
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2. Move the front plate of the mount as far back as it will
go, add some threadlocker to the screw, then tighten the
eight 6-32 screws that hold the plates together. Using the
back plate of the spinner as a reference for measurement,
this should set the front of the propeller adapter on the motor
5-5/8" [143mm] from the fi rewall.