> Anyone ever thought about using helium
> in there tires to make the car lighter?

It was tried years ago and they found that helium leaked through the tire at a really fast rate. I seem to remember something like 10 to 20 psi per hour.

Most professional racers use Nitrogen to reduce thermal expansion.



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John Coffey
johncof@veriomail.com


John Coffey
johnc@betamotorsports.com