ASSEMBLY
Assembling the Fin Canister
The Tailcone:
The first step is to attach the tailcone. Because the tailcone retains the motor during the violent phase
of ejection, it is absolutely critical that you use an adhesive with a high heat rating like JB Weld.
NEVER USE EPOXY to adhere a motor retainer. Retainers get very hot during flight and epoxy is not
made to withstand such temperatures as experienced in this application.
Scuff about 10” of the 18” long motortube with some heavy grit sandpaper. On the scuffed end of the
motortube, mark a line
"
” from one end. See Figure below left.
Test fit motortube into the tailcone until it hits the internal stop. Remove tailcone.
Apply JB Weld on the motortube in the
"
” space between the line and the aft (rear) end of the tube
(See Figure above right). Be sure NOT to apply the adhesive to the tailcone - - doing so will cause the
adhesive to smear out the rear of the tailcone making it impossible to insert the motorcasing properly.
Attach the tailcone. See below left.
Stand the assembly upright. Be sure motortube is seated against the internal stop of the tailcone. Allow
the JB Weld to cure.
