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Old 09-21-2017, 08:08 AM
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tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
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Quote:
Originally Posted by Royatl
I'm thinking of flying a junk rocket with a D12-3 made in April 1972 at our club launch this Saturday.

What say you? Should I do it? What do you think will happen if I do?

This D12-3 has been in my possession since it was first purchased at a hobby store. There was a time in the 80's that it spent two or three years in the attic, but since then it has been in a fairly constant normal indoor environment. My theory is that thermal-cycled motors can return to stability over long periods of time.


If your attic is like mine, that sucker has spent three years cycling from 75 at night up to 150 degrees in the day during the summer and down to the 30's or less in the winter. I'd only fly it if you like seeing roman candles.
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