Quote:
Originally Posted by 14stu
The wheel itself has enough thermal mass and surface area for cooling that it does not heat up much. Your plastic center cap itself is more likely to heat up than the ~20lb aluminum wheel.
Just think about how tough welding aluminum is, getting heat to stay in the metal is a pain thanks to its ridiculously high rate of heat transfer (silver and gold are about the only materials better than aluminum at moving heat energy).
I have partially melted center caps at the track, the thin plastic doesn't hold up to the heat well.
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You might be surprised at how hot the wheels get.
Carefully put your hand close to a wheel next time you come off track!