All,
I will measure strain on a frame member....not the suspension...sic...I
don't want to wait until the car is "off" the ground to find out that it is
light...and I don't have zillion dollars to spend on it.
Skip(Keep the suggestions coming)
At 12:06 AM 11/1/2003 -0800, 3liter wrote:
>Number 2 may be the most accurate approach and fraught with less variables.
>There are two predictable characteristics that can be mapped about your
>tires. (1)is the change in shape due to centrifugal force and, (2)is the
>change in FOOT PRINT due to LOAD. I don't necessarily mean the tire patch on
>the salt but the bulge at the bottom of the tire. I don't know the weight of
>your car and I don't know the N2 pressure you use. However, I imagine there
>is a small foot print (even with 75 psi). It may not be discernable by eye,
>but it surely would be by a sensor. Obviously, the footprint will become
>smaller as you approach aero lift. A measuring laser or some other
>non-contact sensor could be used to monitor tire size changes and trigger
>the necessary output. (See links)
>
>
>
>Measurement for growth, by centrifugal force, can be easily done on a spin
>tester and mapped into a look-up table. The foot print dimensional change
>can be done statically with a floor jack. Your sensor set-up would be used
>in both situations for calibration. I think all the elements are there. The
>most difficult part is how you interpret the information and apply it to
>your unique vehicle. -Elon
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