Top Flite TOPA0405 - Manual (Page 40)

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27. Make the cockpit sides as shown on the
plan from leftover 1/8" balsa and glue them into
position.
MAKE THE TOP COWL
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1. Sand the fuse sides, forward deck and chin
block flush with the firewall and reinstall your engine.
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2. Draw a line 1/4" above the bottom edge of the
die-cut 1/16" plywood spinner ring. Use these lines
to center the spinner ring on the back of the spinner.
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3. Glue leftover 1/16" (or 3/32" for soft mounted
engines) balsa to the spinner ring to act as a spacer
between the spinner and plywood spinner ring.
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4. Tack glue the spacers on the spinner ring to
the backplate of the spinner. Make sure the
spinner ring is centered on the backplate. Mount
the spinner backplate to the engine.
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5. Make a mark on the outside of the fuselage
sides 1-3/4" below the fuse side's top edge. This
mark will designate the bottom of the cowl sides.
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6. Trim the 1/2" x 2-7/8" x 8-1/8" balsa cowl
sides to they fit between the fuse sides and the
spinner ring. The bottom edge of the cowl sides
should align with the bottom edge of the spinner
ring and the mark you made on the fuse sides.
Notice on the top view of the fuse plan how the
cowl sides protrude outward from the fuse and
spinner ring about 1/8" to allow for shaping.
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7. Tack glue both of the cowl sides in place.
View the cowl sides and the spinner ring from the
front to make sure they are on straight and not
touching the engine or engine mount. Securely
glue the parts in place.
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8. Fit the 3/4" x 3-5/8" x 8-1/8" balsa cowl top
in position and glue it in place.
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9. Carefully cut the corners at an angle with a
sharp knife as shown in the photos. Use a bar
sander and coarse sandpaper to finish making a
flat area for the cowl corners to fit.
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