ASSEMBLY OF COUPLER SECTION
Please locate the following items:
One 16” double wall phenolic coupler (or fiberglass coupler for fiberglass kit)
One centering ring assembly with two centering rings, two pre-mounted u-bolts and two
extra 1⁄2” holes
One 1⁄2”x 14’ tubular Kevlar cord
If you purchased the phenolic kit version, you will have a double wall coupler. There is
a split, shorter coupler inside the solid, slightly longer outside coupler. Remove the
inside coupler and squeeze it together reducing the diameter as much as possible without
breaking. Use tape to hold this smaller diameter. You have a choice of either simply
laminating the two couplers together or adding a piece of fiberglass or carbon fiber cloth
between the two. Whatever you choose, you need to apply either epoxy adhesive or
epoxy laminating resin to bond the two couplers together. You will insert the smaller
coupler inside the outer, cut the tape and allow it to expand. After you have joined the
two couplers together
BUT BEFORE THE EPOXY CURES
, SLIDE THE INSIDE
COUPLER SO THERE EQUAL SPACE BETWEEN THE TOP AND BOTTOM IN
RELATION TO THE OUTSIDE COUPLER. Remove all resin and/or cloth
reinforcement from these areas of the outside coupler where it is not doubled.
IT IS
CRITICAL YOU DO THIS!
Later in the construction of your rocket, you will be
mounting the coupler c-ring assembly inside this recess.
BUT NOT AT THIS TIME.
After the unit has cured, clean up any exposed cloth reinforcement, if any was used.
If you have a fiberglass coupler, ignore the above instructions.
