I have built two.
The first one I build per the instruction.
The fin filets cracked on landing.
Part of the reason was that I didn't use fibers in the fillet.
The second one I modified it to separate just above the fins.
I cut the BT ~3in above the fins and installed a coupler there.
I then screwed the NC on so it wouldn't come off.
I had to make a blocker so the chute wouldn't get pushed up to the NC. Some
people would just mount a bulkhead in the BT for this but I just attached a
CR to a ~18in section of MMT and slipped this into the BT so one end of this
MMT was up against the NC.
I rigged the shock cord so the chute was closer to the fin can so that they
wouldn't hit each other and so that the NC hits the ground first.
With this setup I have had no problems with damaged fins.
But you have to be careful of how you pack the chute.
The 'blocker' needs to take up any extra space in the BT.
I only had one event where the chute didn't come out.
But because the BT separates in the back it came down flat and there was no
> Just a general question for all those that have built one of these. I am
> the point in construction where I have to decide whether or not I
> want/should use fiberglass cloth to reinforce the external fin joints. I
> know that it is a no-brainer when it comes to the internal fin joints, but
> am worried about appearance. I have never worked with glass prior to this
> project and I want it to turn out right. This is also my largest rocket
> date. My smaller 2.6" dia rockets utilized fins that attached to the
> mount which gave you 6 fillet points per fin, so glass wasn't needed (in
> opinion). Being that the Forte fins only protrude through the wall about
> 1/16", I am worried about strength.
> Thanks for your time
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