Difference between Involute and Cycloidal Tooth profile

Difference between Involute and Cycloidal Tooth profile

Involute

Cycloidal

Pressure angle remains same throughout the operation Pressure angle keeps on changing during the operation. The angle is maximum at the start and end of engagement. It is zero at pitch point.
Teeth are weaker Teeth are stronger
It is easier to manufacture due to convex surface It is difficult to manufacture due to requirement of hypocycloid and epicycloids.
The velocity is not affected due to variation in centre distance The centre distance should remains the same
Interference takes place There is no interference
More wear and tear as contact takes place between convex surfaces Less wear and tear as concave flank makes contact with convex flank.