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3
9. Using wood glue, attach the launch lug to
the tube. Position it on the pencil line, about 4
inches (10.2 cm) from the end of the tube near-
est the fins. Allow the glue to dry. (Note: If you
plan on flying with high thrust rocket motors to
achieve supersonic speeds, it is recommended
that you apply a fillet of FIXIT
®
Epoxy-clay to
each side of the launch lug for extra strength.
10. Tie one end of the Kevlar
®
shock cord to
the loop on the base of the nose cone. Tape the
streamer to the shock cord, near the nose cone.
Make sure the streamer is securely attached so
that it can’t come off.
11. Cut the paper shock cord mount anchor
from the pattern sheet. Spread wood glue over
one side of the paper and position the free end
of the shock cord at a slight diagonal across the
length of the paper. Fold the paper twice at the
fold lines indicated on the pattern. Squeeze it
between your fingers, and at the same time, curl
the edges slightly to match the inside curvature
of the body tube. When the glue has set, glue
the assembly inside the body tube. Be sure to
position it far enough into the tube so that the
nose cone can fully be inserted into the tube.
Construction of 24 mm Motor Adapter
12. Glue one large centering ring (CR24-29)
on the forward end of the 24 mm diameter tube.
It should be flush with the end of the tube.
13. Glue the remaining two centering rings
(CR24-29) on the other end of the tube, 3/8 inch
(9.5 mm) from the end of the tube. Smear a thin
film of wood glue on all the outside surfaces of
the centering rings to prevent the paper from
fraying.
14. Glue the smaller centering ring (CR18-24)
inside the 24 mm diameter tube as an engine
block. It is recessed 7/8 inch (22.2 mm) from the
forward end. Use a scrap piece of balsa to help
apply the glue to the inside of the tube. Again,
use a rocket motor to push the motor block into
the tube (see step #4).
4.0” (10.2 cm)
FIXIT
®
fillet
Tie shock cord to base of nose cone.
Tape streamer to shock cord.
2.0” (5 cm) minimum
7/8” (22.2mm)
3/8” (9.5 mm)
Section A-A
A
A
