Originally Posted by El Zed
That's fine, Jack is indeed an interesting poster. Any thoughts on the topic?
I think Jack is doing an excellent job trying to explain the complex and sometimes not very intuitive physics behind racket power. Kudos for his efforts which I don't think get the credit here that they deserve. He has made clear that in terms of the inherent power that is attributable to the racket SW is by for the most inportant factor with stiffness coming a distant second. If I understand it correctly, stiffness has the most influence when you don't hit the ball in the center of the stringbed and especially at the top of the stringbed. Therefore his focus on the serve, because this is where stiffness should count the most (Jack, please correct me if I'm wrong). You are now making a big deal about 2 or 3 miles per hour extra you might get from a 'modern' stiff racket, but I bet that before reading Jack's explanation you would have thought it could easily be 5 to 10 miles per hour. You could give him credit for that.