Baiki,
This is the made-up definition of "core torque" by BTM, so readers will understand what they mean. AND the bottom line is they can talk about core torque all they wanted and this was 1997! Since then Sommerville, on more than one occasion, has said that you can't separate a coverstock from a core in the evaluation of a ball; well, for one reason, the degee of polish on a cover will add or subtract fron BTM's torque rating of a ball, with highly polished ball having higher torque ratings than matte, dull, or sanded balls, regardless of the core.
BTW BTM also defined core torque as the degree of flip at the breakpoint.
Edited on 5/9/2003 7:03 AM