Machine Design
For low and moderate speed engines, the cam follower should move with

Uniform acceleration and retardation
Uniform velocity
Cycloidal motion
Simple harmonic motion

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Machine Design
For same pulley diameters, center distance, belt speed and belt and pulley materials,

Crossed belt drive transmits more power than open belt drive
Open belt drive transmits more power than crossed belt drive
Power transmission does not depend upon open and crossed types of constructions
Open and crossed belt drives transmit same power

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