[lyner]

Re the motorcycle and Yor-on: Wouldn't the obvious thing be to vent the gas to the outside after it's done its expanding / work? Or are you not talking of the motorcycle?

What two tanks?

[yor_on]

sorry Sophie, got to eager there.
Was reading the first page and the discussion of heat.

Totally missed page two I'm afraid, as I started to wonder how the compressed air would behave if 'let out' to an empty tank.
Reading your answer to the Question posed I agree.
It sounds like an advanced challenge if they are going to modify a bike engine to air?
Perhaps its a theoretical exercise?

And yes, my thoughts do seem to fit in somehow?
Strange:)