Great Planes Reactor Biplane .61 GP/EP ARF - GPMA1023 - Manual (Page 9)

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2. Test fi t the servos in the servo openings in the fuselage.
If using standard-size servos that don’t fi t in the openings,
use a fi ne-point felt-tip pen and the plywood servo cutout
template as a guide to mark larger openings. Cut the
enlarged openings along the lines you marked.
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3. Using the screw holes in the servos as a guide, drill
1/16" [1.6mm] holes through the fuselage for mounting all
three servos.
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4. Temporarily mount the servos with the mounting screws
that came with the servos. Remove the screws and add a
few small drops of thin CA to each hole. This important
procedure will harden the “threads” cut by the screws to keep
your servos securely mounted.
Mount the Horizontal Stabilizer (Stab)
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1. Use 30-minute epoxy to glue both 6 x 25mm bottom wing
dowels into the bottom wing with 1/4" [6mm] protruding.
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2. If you haven’t yet done so, make sure the wrinkles have
been removed from the covering on the horizontal stabilizer
(stab) and around the stab openings on both sides of the
fuselage. (This will be a little more diffi cult to do after the stab
is glued in.)
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3. Temporarily bolt the bottom wing to the fuselage with
the 1/4-20 x 2" [51mm] nylon wing bolts.
Before using glue, make a “trial run” of mounting the
stab by performing steps 3 through 7.
A A'
A = A'
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4. Slide the stab into the fuselage. Center the trailing edge
(TE) in the fuselage by taking accurate measurements on
both sides.