Evaluating Chassis Stiffness, any ideas? |
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Evaluating Chassis Stiffness, any ideas? |
McMark |
Jan 26 2007, 03:08 PM
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#1
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I've been thinking about this for a long time. I would like to be able to quantitatively evaluate chassis stiffness. I have some ideas for increasing stiffness, but I'd like to be able to measure those changes by something other than the seat of my pants ("It feels stiffer.").
My best idea so far is to place a car on three jack stands of equal height and measure the droop of the fourth corner. Any other ideas? Any physicists that can help out here? |
TonyAKAVW |
Jan 26 2007, 06:05 PM
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#2
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That's my ride. Group: Members Posts: 2,151 Joined: 17-January 03 From: Redondo Beach, CA Member No.: 166 Region Association: None |
I'm assuming torsional stifness is what you want to measure. in that case, fix 3 points, vary the 4th. The fixing of the other three points would require that those jackstands be bolted to the floor I imagine.
Then to find out the stiffness, you put a jack on a scale and measure the force needed to lift the body some predetermined amount. That would be your torsional stiffness in pounds (of force) per inch (of travel). -Tony |
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