Quote:
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Originally Posted by CPMcGraw
You've just asked one of the $64,000 questions of model rocketry, you know that? 
Craig [Needing to take his own advice] McGraw
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BARCLONE |
I've spent some time chasing down the BT-52 dimension question, and I'll post here some findings that I made late last year. This content comes from a message I posted on the Old Rockets newsgroup, message #23393. Kits using BT-52 were addressed in Old Rockets Message #25814:
(Responding to J. Steven's question concerning the kits using BT-52):
- My Colonial viper (#1310) has BT-52S tubes that are clearly 0.013" thick, OD =
1.014", same as yours.
- The piece of BT-52AG in my Semi-Scale Saturn V (#1239) compares favorably to
this (I'm having to compare through the un-opened plastic bag)
- Check out the 1974 Parts Catalog, Page 9 (the nose cone list), and look for
the entry for nose cone No. 36. This is the BNC-52AG, the nose cone for the
Semi-Scale Saturn V. Lists the OD (Dimension #2) as 1.014".
All this means that the OD and wall thickness entries for the BT-52 tubes on the
Tube page are in error. The correct OD is 1.014" and the wall thickness is
0.013", the same as a BT-50 and a BT-51. It means the first jump to a thick wall
tube is the BT-55."
This, plus the measurements I made for Old Rockets message #25814, suggests some strong evidence for the "correct" original dimensions for the BT-52.
John