Dynaflite GPMA0525 - Manual (Page 9)

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1. From the 1/8" x 3/4" x 8" balsa stick, cut two
4" long stab mounts.
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2. Cut a 5/32" half-round groove 2-1/4" from
one end of both stab mounts as shown on the
cross section of the plan. As you can see on the
plan, when joined together, the stab mounts will
hold the stab joiner wire in position. Hint: Use a
5/32" brass tube sharpened at one end to cut the
hole. Pinch the two stab mounts together and
twist the brass tube as you push it through. As
you proceed, use a small square to help you
guide the tube straight through.
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3. Cut notches in both stab mounts to accommodate
the horn on the joiner wire. Round both ends of the
notches (use your sharpened brass tube for the
ends of the notches).
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4. Use steel wool, sandpaper or a wire brush to
remove corrosion and clean the solder joint
holding the horn to pre-bent stab joiner wire. If
necessary, use a small file to true up the solder
joint so both brass bushings can slide up close to
the horn.
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5. Test fit the joiner wire between the stab mounts.
Make sure you have made your notches wide
enough and long enough so the horn does not
interfere and so you can get enough elevator throw.
You may build either a conventional straight-tail
stab and fin or a V-tail stab, whichever you prefer.
The instructions show you how to build both
versions. Most of the photos show the
conventional tail, but there are photos of the V-
tail where necessary.
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1. Position the plan so the stab is over your
building board, then cover it with Great Planes
Plan Protector or wax paper.
❏ ❏
2. Pin the stab mount/joiner wire assembly
over the location shown on the plan so the left
edge of the balsa stab mount is 1/16" from the
edge of the stab drawing.
BUILD THE STAB
MAKE THE STAB MOUNT
BUILD THE TAIL SURFACES
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