Dynaflite GPMA0525 - Manual (Page 19)

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10. Securely glue the bottom wing bolt block to
the aft edge of former 2 and the bottom of the
fuse. Enlarge the hole in the bottom wing bolt
block and drill through the bottom of the fuse
with a #12 (or 3/16") drill bit.
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11. Tap threads into the top wing bolt block with
a 10-24 tap. Coat the threads with thin CA. Allow to
fully cure (you may use a little CA accelerator), then
re-tap the threads. Coat with thin CA and re-tap
once more.
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12. Secure the top wing bolt block to the bottom
wing bolt block with the 10-32 x 2" nylon wing
bolt. Position the wing on the fuselage with the
top wing bolt block in the notch in the leading edge.
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13. Check the wing alignment by accurately
measuring the distance between both wing tips and
the aft end of the fuse. If necessary, trim the notch
in the LE of the wing for the wing bolt block and
shift the wing until the distances between the tips
and the aft end of the fuse are equalized.
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14. Securely glue the wing to the top wing bolt
with epoxy. For additional strength, add Milled
Fiberglass Fibers to the epoxy. Build up a small
fillet of epoxy around the top wing bolt block, but
make sure you don’t glue it to the bottom wing
bolt block. Place a weight on top of the wing to
hold it down until the epoxy fully cures.
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15. Cut a small, round hole in the fuse bottom to
countersink the head of the nylon wing bolt. Hint:
Use a 13/32" brass tube sharpened at one end to cut
the hole.
Refer to this photo while you mount the hatch to
the wing.
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1. Cut the end of the nylon wing bolt so it is
even with the top of the top wing bolt block.
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2. With the wing bolted to the fuselage, little by
little carefully trim the hatch until it fits the wing.
Proceed slowly and frequently test fit the hatch as
you proceed.
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3. Use thin or medium CA to carefully glue the
hatch to the wing only. Remove the wing.
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4. Use leftover 1/8" balsa to fill the space
between the bottom of the wing near the LE and
the fuse. Glue the leftover balsa pieces to the wing
and shape them to fit the wing saddle on the fuse.
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5. Use lightweight, sandable balsa filler where
needed to blend the hatch to the wing. Do not
build up a fillet, but use just enough filler to fill
any gaps between the hatch and the wing. Then,
yours will look as nice as ours (almost!)
MOUNT THE HATCH
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