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Minimizing the mass of reciprocating parts like the pistons and rods means less mass to counterbalance on the crank. By maximizing the efficiency with which the counterbalance mass is used, the crank can be made significantly lighter. The scat crank shown here is a typical example. under the accelerating test conditions, lighter parts show a power advantage.
Engine Masters Challenge - The Power To Win!

 Minimizing the mass of reciprocating parts like the pistons and rods means less mass to counterbalance on the crank. By maximizing the efficiency with which the counterbalance mass is used, the crank can be made significantly lighter. The scat crank shown here is a typical example. under the accelerating test conditions, lighter parts show a power advantage.  View Related Article

 

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