Why can't I tranfer spin on this shot?

[dr_dave]

concise summary of bottom line

Dave,

Could I express that in layman terms this way?

By thickening the cut angle, there is a significant reduction in the tangential deflection speed of the CB. This reduction is greater than the throw component which adds some speed in the same direction.

e.g. Thickening the cut reduces CB tangential deflection speed by 0.2 m/s. The english required to do this adds perhaps 0.15 m/s of throw. A net reduction of 0.05 m/s.

Colin

Sounds good to me. If people want to see illustrations, further explanation, and more details (e.g., the effect of shot distance), they can refer to my July '07 article and TP A.29.

Regards,
Dave