LTLFTcomposite wrote: Skywagon wrote:
I am just waiting for someone to try that... and see how far they get... if they are able to move at all...
I was joking of course, but your response made me wonder what would happen (setting aside outcomes like the car floating away). Helium expands and contracts too much with temp changes or something?
There was a lot of people thinking about it and trying in the past, but to summarize:
1. Main problem is that Helium atoms are so small, so they leak even through many solids, Helium can penetrate metal in tires and leak through rubber wheels, so you will have to have some super fancy sealant (not sure if one even exist that can withstand constant bending of the tire) or add helium every day.
2. Helium contracts/expands with temperature much faster then air, so to compensate for that your tires would have to inflated to higher pressure to reduce the effects of the temperature.