Quite long but quality video

http://www.wimp.com/tiniestengine/

When thats laid out for assembly it looks like the worlds best airfix! Shame theres no spark plugs

Does that run on nitro fuel?

It needs a glur plug system if so.

I think it is driven by compressed air

http://www.locostbuilders.co.uk/viewthread.php?tid=164057