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911pcars 911pcars is offline
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Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
I must agree.

According the the quote:
Quote:
"By analyzing an original chassis, we discovered the original 427 Cobra chassis had a stiffness of 1450 foot pounds/degree of deflection. Analysis of the billet aluminum chassis showed a stiffness of close to 4500 foot pounds/degree of deflection, or a 300% improvement over an original chassis (actual stiffness is a little lower because we did not perfectly model the bolted-together joints)."
Here's a chart I cobbled together a couple of years ago on a topic on 911 chassis strength/reinforcement.



Looking at the numbers, one can see how flexible the Cobra chassis is (1450 ft.lbs/deg. before and 4500 after) compared with even a modest passenger car like a Dodge Neon @ 6,000 ft.lbs/deg. much less state-of-the-art supercars like the Veyron at 44,136.

Yes, this was an exercise in manufacturing prowess (very effective) and producing a one-off collector's piece. I'm sure the company and Ellison are happy with the end results.

Sherwood
Old 09-17-2009, 03:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)