Going to blog it in a bit if you don't mind waiting but not going to far into it I dont want it to end up in MRT land.... it involves some maths and an involved testing technique.... I was looking for someone other then myself to test out the theory on will more then likely be someone from my club...
effectively it is a derivation of Moment of Inertia [MOI] but not entirely as bats are fairly comlpex shapes and swing speed differs for different shots...
I think I can create the feel of a bat fairly accuratley but I need to have the original to run the tests and calcs from to do this....