Mount The Wing - GREAT PLANES Giant Super Sportster Instruction Manual

HOW TO SOLDER
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A. Use denatured alcohol or other solvent to thoroughly
clean the pushrod. Roughen the end of the pushrod with
coarse sandpaper where it is to be soldered.
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B. Apply a few drops of soldering flux to the end of the
pushrod. Then use a soldering iron or a torch to heat it. "Tin"
the heated area with silver solder (GPMR8070) by applying
the solder to the end. The heat of the pushrod should melt
the solder–not the flame of the torch or soldering iron–thus
allowing the solder to flow. The end of the wire should be
coated with solder all the way around.
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C. Place the clevis on the end of the pushrod. Add another
drop of flux. Then, heat and add solder. The same as before,
the heat of the parts being soldered should melt the solder,
thus allowing it to flow. Allow the joint to cool naturally without
disturbing. Avoid excess blobs, but make certain the joint is
thoroughly soldered. The solder should be shiny, not rough. If
necessary, reheat the joint and allow to cool.
❏
D. Immediately after the solder has solidified, but while it
is still hot, use a cloth to quickly wipe off the flux before it
hardens. Important: After the joint cools, coat with oil to
prevent rust. Note: Do not use the acid flux that comes with
silver solder for electrical soldering.
This is what a properly soldered clevis looks like-shiny
solder with good flow, no blobs, flux removed.
❏
4. Now that the servos and control horns have been
mounted, remove the servo mounting screws and the
control horn screws. Add a few drops of thin CA to each
screw hole to harden the "threads" in the holes. After the CA
has hardened, reinstall all the screws to securely mount the
servos and the horns.

Mount the Wing

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1. Fit both wing halves together on the joiner tube. Then,
place the wing on the fuselage, keying the dowels into the
dowel holes in the former.
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2. Bolt the wing to the fuselage with two 1/4-20 x 2" [50 mm]
nylon wing bolts and the plywood wing bolt plates underneath.
Use a fine-point felt-tip pen to mark the outline of the wing bolt
plates onto the wing.
❏
3. Refer to the Expert Tip on page 12. Using care not to cut
into the balsa underneath, use the soldering iron technique or
a sharp #11 blade to cut the covering 1/16" [1.5 mm] inside the
lines you marked around the wing bolt plates. Use one of your
small paper towel squares dampened with denatured alcohol
to wipe away the ink, and then peel off the covering.
❏
4. If any of the covering has loosened from the sheeting
around the covering you just removed, use a covering iron
with a covering sock to reseal the covering back to the wing.
Use epoxy to glue the wing bolt plates to the bottom of the
wings. This can be done by actually bolting the wings to the
fuselage, but care must be taken not to get excess epoxy
into the wing bolts or on the fuselage-otherwise it could be
difficult to remove the wing after the epoxy has hardened.
Another way to glue the wing bolt plates on is with clamps.
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