Torsion Powered Vehicle

[--Pete]

Hi,

You piqued my interest, so I Googled some. First thing I found was not exactly on topic, but of some interest.

Would it be possible to store around 2000-2500 MJ of energy in a lightweight serial sequence of torsion springs to replace the chemical fuel?

Next thing was a little more on topic. At 0.0003 MJ/Kg, it would take around 7000 metric tons to store that amount of energy. Yeah, not optimized. But that's more than three orders of magnitude more than is reasonable (a one ton storage is already some twenty times more than a gas tank). I don't think a little bit of development and improvement will get you there, even with fancy materials and design.

--Pete