Quote:
Originally Posted by Racer26
...Now i'm wondering if I could put enough helium in a pneumatic tire to make it float. R78 doesn't say the pneumatic wheel has to be serving a 'wheel' purpose, and a floating pneumatic wheel would be just as effective as a balloon at getting in the way.
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The short answer is "No".
It would take ~46 cubic feet of Helium at NTP to raise a 3 lbm wheel.