04-09-2018, 09:57 PM
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SPEV/Orion wrangler
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Join Date: Mar 2005
Location: Atlanta, GA
Posts: 2,645
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Quote:
Originally Posted by Ltvscout
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Yes, all BT-30's were parallel wound until the 70's. The initial ones were apparently made on the Estes' kitchen floor (or maybe table) with manilla folders. I think they quickly got a tube company to make them with the manilla material, but they still looked hand wound! I have a couple right here. Maybe 1973 was the first spiral-wound BT30 I ever saw? I think the Mark II was the first kit utilizing the spiral-wound tubes.
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Roy
nar12605
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