[Tavel]

oval eh? i like that, it would equalize the distance the gasses have to travel to get to the outer edge of the piston which would idealy make better power, very cool...but you'd probably need two tie rods to keep it balanced, and the machining costs would quadruple, circles are a lot easier to bore than ovals. i mean, unless you've got an oval cutting drill in mind too lol.

i'd like to see cars using heat engines, like submarines. that way, cars could be nuclear powered(or some other massive heat emmiting source) and they wouldn't pollute at all.

 

[Tavel]

i think we'll just go back to horse and buggy in the future, much more fuel efficient.

 

[Tavel]

but they're all natural :cheers:

 

[Tavel]

Here's an Opposed free-piston engine

and it's parts

my brain hurts.