[david sandridge]

I agree that knowing shaft deflection is great for clubmakers. When I was making clubs, because I was left handed and needed a test set, I must admit that I had 26 drivers in my garage less than three years old !! I had a frequency machine and deflection board. Years ago I was hitting my Calloway 7 wood so sweet. I went to the clubmaker at Martin's in Myrtle Beach. I asked if he could make a driver to frequency match it. He fiddled around with his components and said he didn't have what he needed in left handed. Then He had me hit my driver. I had just finished playing and was stiff and 95 mph was my best. He took my driver and swung left handed 120mph. Then He told me I didn't need a new driver but LESSONS ! I was pissed. Concepts like the shaft bending down and deflecting foward I think are best put in the recesses of your brain and forgotten. I have enough trouble with the foward leaning shaft and its illusions.