The 2009 Yamaha YZF-R1 motorcycle uses the crossplane crankshaft and, in the absence of the 90° bank angle of the V8, must use a separate balance shaft geared off the crankshaft to eliminate the inherent rocking vibration (primary rocking couples) found in this type of crank.
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The crossplane design was first proposed in 1915, and developed by Cadillac and Peerless, both of whom produced flatplane V8s before introducing the crossplane design.