Today, as i did last week, I worked a little on my swing speed. I don't remember what I got up to last week, this week, I was able to get my playing driver up to 117mph on the swing speed radar, and I was able to get the shaft I use for the aero swing things up to 145 with only the things needed to hold the aero swing air resistance pieces on it.. without the 6oz. resistance piece, I have about 1oz of steel, plastic, and rubber at the end of the shaft. Not just a bare shaft, instead of a head on the adapter, I have the screw holding on 2 steel washers, those back up the plastic washer and rubber washer that came with the set. I got pumped when I saw i was able to get my driver up to 117. I'm going to have to hit the range at the bigger course and play with my driver for a large bucket of balls.