Eli5 why motorbikes rev higher than cars?

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I own a bike and a car. I’ve wondered this for some time, when I am doing 120km/h the car gets around 3k revs and the bike easily 6k.

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Anonymous 0 Comments

The difference is gearing. The car has a lower gear ratio so at a given speed, the engine can turn slower in the car vs the motorcycle. The reason for the difference is the amount of power each engine makes. The motorcycle probably makes less power at the same RPM as the car engine. Each speed take a certain amount of power to propel a vehicle. So the motorcycle engine needs to spin faster than the car to maintain that speed.

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