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Old 05-15-2019, 09:49 AM
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cycleguy55 cycleguy55 is offline
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Location: White City, SK
Cobra Make, Engine: West Coast, 460 CID
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Quote:
Originally Posted by strictlypersonl View Post
When we raced an Austin Healey 100-4 (a similar shape to the Cobra) without a full windshield, we used loose leather belts at the rear. At speed, the rear would come up a couple of inches. The difference is that, with a windshield, high pressure extends forward enough to keep the hood down.
I note the grille on the AH 100-4 is higher than is the opening on a Cobra. In addition the leading edge of the hood is higher and the hood itself has less front to rear slope on it than a Cobra hood. I'm not an aerodynamics expert, nor do I have access to a wind tunnel, but I believe the combined effect of these differences is quite significant.

Yes, the windshield pressure wave will affect the rear of the hood, but there are other factors at play.
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