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  1. jahall4

    Shear pins on a 8" dia bird.

    I’ve been using this Ejection Charge and Shear Pin Calculator for my fiberglass projects and its recommendations have always been confirmed in ground testing. https://www.rimworld.com/nassarocketry/tools/chargecalc/index.html However, I’m working on an 8” dia project that may end up using #6...
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