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Rob Dahm is refining the unique 15.7-liter Y12 rotary engine, originally designed by Tyson Garvin as a twelve-rotor ...

The Urtopia Titanium Zero eBike has been in development for years. Titanium was chosen for its unique combination of strength ...

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The ...

It sounds more like an old-school radial aircraft engine than anything that should power an automobile of any kind.

He's an eccentric motorcycle and engine building genius who regularly creates mind-bending engineering alchemy and has ...