06-13-2005, 11:57 PM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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Quote:
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Originally Posted by Carl@Semroc
Craig,
Very nice work! It took a little digging, but I found an old one. Before I rip it open, you are right on the tubes. 3,3,9.
The nose cone is 3.0" the PNC-76. Our BC-730 is a balsa equivalent.
I will have to scan the fins and convert them to Corel to laser-cut them.
Carl
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But that's cheating, Carl! You've got an actual kit to measure up, and I've only got a grainy set of images and a tortured mind to work with! 
I was right, though, about the measurements being a tad off. I'll bet that 3.0" nose cone in your kit was a grab-what-they-had instead of what it should have been. Was there a length difference between the BC-76 and the PNC-76? I was just following the part number from Mike's list of which cones went to which kit, and interpreted the "76" as a direct carry-over from balsa to plastic.
Thanks for the "heads-up" on the balsa fin thickness. Estes would have used 1/16", but Centuri liked a more conservative, beefier fin.
Craig McGraw |