10-11-2007, 07:48 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
I've seen them made in 1.75 for the reason you're talking about. Originals were as Bob said 1.5" but make sure it's a good alloy and wall thickness. I've been making them from 1020 DOM (Drawn on mandrel(seamless)) .120" wall mechanical tubing. That's the same stuff SCCA spec for their roll cages.
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