Originally posted by modellor
Not necessarily Boomer. You can have the front tires smaller than the rear and still achieve overdrive. It all depends on the pulleys you are running and the rpm your engine is running at.
question : how does the rpm of the engine affects the over drive of the car ? i know by changing the diameter of the tire changes the distance traveled per revolution of that wheel. by changing the pulley ratio of one axial changes the rotational speed of that axial. either way will create a differential in linear speed between the two axial thus achieving over drive or under drive. i have problem connecting an engine’s rpm with over drive/under drive of the car, maybe you can help me to understand this.
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