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Old 03-02-2019, 01:05 PM
luke strawwalker's Avatar
luke strawwalker luke strawwalker is offline
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Join Date: Dec 2007
Location: Needville and Shiner, TX
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Quote:
Originally Posted by mojo1986
If the clear fins are left off and you just go with the small scale fins, any idea where the centre of pressure would be?

I have a K-39 that I built with 5 BT-5 engine tubes. If I knew the centre of pressure I could install 5 mini A engines and then add sufficient nose weight to bring the CG ahead of the CP.


I remember reading somewhere sometime someone said with "stock" scale fins, if you balance it at the front of the second stage, it'll be stable. I can't recall exactly where or when I read it nor by whom...

Later! OL J R
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