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Yamaha Crossplane Cranshaft
Completely new crossplane crankshaft design to increase the throttle and drive ability by reducing the inertia force. Function Crossplane design means that each of the crankpins are at a 90° angle compared to the next. The crankpins are therefore in two planes crossed at 90°, thus the name crossplane crankshaft. The crossplane crankshaft is designed to reduce inertia torque created by the engine to a minimum. The torque that a rider feels is a combination of two kinds of torque: the Combustion torque coming directly from the firing of the engine, and the Inertia torque coming from the movement of the parts (such as pistons and crankshaft) inside the engine. The inertia torque acts as ‘noise’ interfering with the combustion torque and thus throttle feeling for the driver. Just like music we don’t want to have any cracks, hick-ups or other disturbances to interfere with the quality of the music. In other words we don’t want no...
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