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22. Temporarily loop the shock cord out
the back end of the motor mount to keep glue
from getting on it. IMPORTANT: BE SURE TO
TEST-FIT EVERYTHING BEFORE APPLY-
ING GLUE. Slide the engine mount into the
tailcone. Push it in tight so that both centering
rings touch the inside edge of the plastic. If the
forward ring does not touch the plastic all the
way around the perimeter, pull out the engine
mount, and sand the aft centering ring down.
When the fit is correct, apply a bead of “thick-
viscosity” CA glue to the edges of the center-
ing rings and reinsert it into the tailcone. While
the glue is still wet, rotate the engine mount
around so that the engine hook lines up with
one of the seams in the plastic tailcone.
23. Using thick-viscosity CA glue, attach
the boattail to the body tube. Align the seam
on the boattail with one of the lines on the
tube. Mark the tube on the opposite side of the
engine hook as the bottom of the rocket.
24. The easiest way to extend the lines
from the tube to the boattail is to use a piece
of masking tape. Sight along the tube to make
sure the tape is straight before you draw the
pencil line. The line should go from end-to-
end on the boattail. Repeat for the other side,
where there is not a seam line from the plastic.
25. Apply a bead of wood glue on the top
surface of the wing where the two wings join.
Glue the wing on the bottom of the the body
tube. The back edge of the wing is positioned
where the boattail meets the tube. Make sure
the wing is straight on the tube. Hold it in this
position until the glue sets, and then allow it to
fully dry.
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Align engine hook
with seam of plastic.
Sand down aft ring to
make the fit tighter.
Apply glue to the back
edge of the rings.
Align seam on boattail with one of the lines on the tube.
Thick-viscosity CA glue
Masking tape
Align tape edge with pencil line on tube
Front view
