Thread: C4.1 Chassis
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Old 01-12-2011
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elvo elvo is offline
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Quote:
Originally Posted by Fabs View Post
Ok.

First of all 1000, 2000 series etc does not relate to mechanical properties but to the main alloy......
just trusssssssssst me

Fabs is 100 million percent correct. Technically.

HOWEVER.

There is one little twist in this story. People tend to buy expensive little cars and plow them into solid objects at high speed, I think that is a fair thing to conclude from this thread. So manufacturers are forced to design chassis to cope with that. That is where material strength does influence stiffness, through dimensions.
Example: if the C4.1 chassis were made out of 6061-T6, it would need to be 4mm thick in order to be strong enough. If it had been 7075-T6 - which is very strong - 3mm would have sufficed.
Both materials behave exactly the same in the elastic part of the deformation curve, but the strongest one allows lighter construction, and thus, more flex. A thinner chassis flexes more.

Stronger alloy = more flex. Counterintuitive, eh?


Very similar story: http://www.willswing.com/Support/FAQItem.asp?reqFAQ=66
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