As spin bowlers, ideally, we should aim to get maximum revolutions on the ball every delivery. The angle of our wrist at the point of delivery determines the way the ball behaves both in the air and off the pitch but the more revolutions, the more dramatically the ball will drop or drift in the air and the more quickly it will behave once it hits the pitch.

Maximum revolutions lead to deception through the air and explosions off the pitch. Putting it simply, more fizz equals more wickets.

Whilst there will be slight variations in pace through the air depending on what type of delivery you bowl this should never impact on the amount you are spinning the ball. To be clear, spin relates to revolutions, turn relates to sideways movement of the ball off the pitch.

https://www.cricconnect.com/profile/988/stuart-macgill/blog/1056/maximum-revolutions-are-the-essential-ingredient-to-leg-spin-bowling