Automotive
Starting with two CBR250 engines, he machined his own cylinders and crankcase, machined a crankshaft from solid alloy and even designed his own gearbox.
How?
He's the crew chief on the Tech3 Motogp team, and has the shop resources of a race team at his disposal.
they figure redline is about 22,000 rpm
http://thekneeslider.com/300cc-inline-6-cylinder-by-guy-coulon-a-22000-rpm-race-engine-personal-project/
