Sooner Boomer
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I guess this is as good a section to post this as any. when designing a low- mid-power rocket based on Estes-style paper tubes, how long of a (male part) coupler do you use? That is, how much goes into the upper stage? Is it based on a certain percentage of diameter? I've never really worried about it, but I've got a new design that uses a long booster coupled to a long upper, and I want to make sure they stay together (until staging).