[NRVR-Members] Shear Pins in Cardboard

[Adrien Drouault]

So, I'm planning on flying my Binder Excel ("Take Too!") with full-up DD
next weekend, and am to the point of shear pins for the upper bay (main
chute).

I've read about embedding (a) piece(s) of brass shim stock to reinforce the
cardboard.

What I'm not clear on is if I should just put one in the airframe tube, or
if I should also reinforce the coupler/avbay tube.  It seems like both
would be best, but everything I've been able to find online only mentions
putting it in the body tube.

Thoughts?
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