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Old 02-16-2013, 06:16 PM   #14
Join Date: Dec 2012
Posts: 1,294

actually - how much top/underspin is there after the bounce is not important, as the rpm will be minimal either way.

i should have said that penetration is a combination of spin and speed before the bounce.... the right combination causes aerodynamic lift (as opposed to a topspin ball), so it makes the ball 'light' with little friction at the bounce, hence the 'skidding'.

aerodynamic lift cannot be achieved with the lack of either the speed or the spin.
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