The new 2011 Yamaha R1 represents a new concept shift in technology, performance and controllability among litre class sport bikes. Inspired by Yamaha's M1 MotoGP race bike, this latest production R1 kind a cross plane crankshaft design with an jagged firing order to present outstanding yet easy to control torque and an remarkably linear stifle feel never experience before. But there is far more to the 2011 Yamaha R1 than just a world-shattering engine.
The key mechanism of this cutting edge engine design is the "cross plane" crankshaft and an uneven dismissal order. Both of this description is used on Yamaha's championship winning M1 MotoGP racer. Please note … this is not a big bang engine. The R1 departs from the standard for in-line 4 cylinder engines and the 180 degree position of the crank pins where the linking rods attach to the crankshaft, and locates the centre two rods at a 90 degree plane from the outer cylinders. This means in its place of the crank pins aligned on the same plane a straight line drawn through the centre of the crankshaft, they align on 2 planes in the form of a cross plane. Working in combination with the cross plane crank is an uneven firing order. A traditional in-line 4 cylinder's firing order is normally 1,2,4,3 with a 180 degree interval. These R1 engine fires 1,3,2,4 cylinders and the firing intervals are uneven at 270 / 180/ 90 /180 degrees. This engine design allows a full new level of rider - machinery statement. One of the most chief remuneration is the terrific cornering recital that amplified engine control allows.
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