11-05-2008, 03:40 PM
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Rocket Powered Preacher
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Join Date: Mar 2008
Location: San Antonio, TX
Posts: 1,298
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Quote:
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Originally Posted by CPMcGraw
No, not the same at all. Take a look at the 1962 Estes catalog, pages 3 & 4. In 1963 or 64 the designations were changed.
BT-1 = 13 3/4" long, ID = 0.765", OD = 0.825" (wall thickness 0.030")
BT-3 = 9 1/4" long, ID = 0.725", OD = 0.765" (wall thickness 0.020")
Estes did not have 13mm motors at this time.
(BTW -- Love the tagline...  ) |
So would that correspond best to the Semroc BT30 tube currently listed?
I'm guessing that I would just need to give the motor an extra wrap of tape.
Thanks,
__________________
John A. Lee O.S.L.
Alamo Rocketeers NAR Section 661
NAR 87285, L1 8 March 2008
TRA 03040, L1 8 March 2008
Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/
I used to tell Mom, "...I want to fly rockets when I grow up!" 
She said, "Make up your mind, you can't do both!" 
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