Kruegon
Well-Known Member
- Joined
- May 20, 2014
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So I'm working on several old Estes rockets. Came across a Flip-Flap from an old MRN contest that I want to build. Seems pretty straight forward. One thing I'm missing. Length of body tube. Based on the simple plans, it's a BT-20. The balsa fin thickness isn't stated either. Guessing it's 1/8th. And the nosecone appears to be a BNC20J. So any suggestions on how to find the BT length?