Helmet bars

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Helmet bars

Postby aray347 » Thu Nov 30, 2017 7:35 pm

What od and wall thickness do the helmet bars need to be?
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Re: Helmet bars

Postby WILD BILL » Thu Nov 30, 2017 9:54 pm

Per page 36 of the NHRA 2017 rule book



Helmet bars (3/4-inch OD x .058-inch chromoly tubing or 3/4-inch x .083-
inch mild steel, or 1/2-inch x .090-inch flat strap)
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