[TheForge] Re: fire piston

[Demon Buddha]

nah...  if you compress air at 70*F to 1/15th its volume, the temp rises 
to 1050*.  That should be enough to ignite tinder.  I know it sounds 
odd, but the ideal gas law doesn't lie.

Freddie Warner wrote:
> You're right, Robert, the more I think of it the more I believe there 
> has to be some kind of vapor in the cylinder. You have to be able to 
> compress whatever ignites and fine wood shavings or dried grass won't do 
> that. I bet they add something like some sort of vegitable oil or 
> something that vaporizes.
> 
> 
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