Rob Dahm Receives 12-Rotor Engine, Sparks Concern.

YouTube personality Rob Dahm has been given a handmade 12-rotor engine, the most rotors of anything ever, which he plans to bring into the modern era with fuel injection and possibly even forced induction. The engine was originally built for a drag boat and never ran on more than carburetors and a pair of V12 Jaguar ignition systems. The teardown of the engine shows incredible engineering and is worth watching.