Top Flite TOPA0405 - Manual (Page 30)

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35. Glue 3/8" triangle reinforcement at the
forward and aft joints between former F-10 and the
balsa fuse sides.
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36. Insert the outer pushrod tubes in the holes
for the elevator pushrods. Approximately 1" of the
guide tube should protrude past former F-11.
Insert the pull-pull guide tubes (not included) in the
holes for the tail wheel steering. Glue the guide
tubes to the formers with medium CA.
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37. Trim the guide tubes 2" in front of former
F-8. Save the pieces you cut off.
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38. Cut two 14-5/8" lengths from the supplied
3/8" x 30" triangle stock. Glue the triangle sticks
along the bottom aft edge of the fuse as shown.
Notice on the fuse plan that they stop 5/8" short of
the aft end of the fuse sides.
INSTALL THE RADIATOR
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1. Test fit the die-cut 1/8" plywood radiator keels
into the slots in F-8, F-9 and F-10. You may
be required to shorten them slightly. Place a
straightedge along the front of former F-8 to make
sure it stays straight, as you glue the radiator keels
in place.
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2. Edge glue two 3/16" x 3" x 24" balsa sheets
together. Trim the sheet following the drawing to
make a radiator bottom. On one side of the
radiator bottom, use a razor saw to make multiple
cuts about half way through the sheet. This will
allow the radiator bottom to bend easier.
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3. Wet the radiator bottom with water. Apply CA
to the keels, F-8 and F-9. With the cut side down, pull
the sheet into place with multiple pieces of masking
tape and allow the wood to dry thoroughly.
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4. Use a knife or a razor plane and sanding bar
to bevel the radiator bottom and sides. Check the
cross-section on the plan for reference.
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5. Use the pattern provided on the fuse plan to
cut two radiator corners from the two 1/4" x 3" x
24" soft balsa sheets. Place the pattern close to
the end of the sheets. Save the leftover 1/4"
sheeting for use later.
HOW TO USE THE PATTERN TO MAKE
THE RADIATOR CORNERS
Cut the pattern from the plan. Spray the back of
the pattern with 3M #75 Repositionable Spray
Adhesive. Press the pattern onto one of the
sheets. Cut the sheet along the lines with a
sharp #11 blade.
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