Prior to using the TM SLDR, my specs & equipment were stiff 60+ gram shaft, 9.0 deg head kept at 9.0 deg- I hit I high ball. My ball flight is straight to a baby fade if I go after it. My average carry distance is 245with a roll out to 257 average. My launch was 11.5-12.5 deg and my RPMs was about 2550 obviously sometimes a little less and others times a little higher. Usually never more than 3300 on a bad hit. Driver club head speed is 102 mph average. My Handicap is 3.5-4.0.
I used the SLDR with the use of a launch monitor on several locations and conditions. I had it set close to the specs above. And used the same quality ball. I Did use the stock SLDR speeder 57 gram shaft in stiff. Immediatly My average RPMS dropped almost 750 of of my 2550 RPMs . My drive launch angle was lower and consequently my drive carry was less, run out was a little longer. Overall I was ot impressed. Being suspect I thought it may have been my swing, i continued to try. my ball flight was lifeless and flat. I tried at times to lift the ball higher into my usual launch window. It still didn ' t feel or see right to my eye. Then I swapped the SLDR driver shaft onto my own TM R1 head , RPMS went back up to my norm, launch was up and right back to my typical ball flight. So clearly it was not the shaft. I then swapped the SLDR 9.5 driver for a 10.5 model and eventiully moved the loft higher and higher, each time I had better and better results. Eventually I had 11.5 degree loft ( +2.5 deg up) stiff speeder 57 shaft. What a difference.
I further experimented with other brands and models some with very high loft when I did so my RPMS increased to over 3200-3500 with the 11, 11.5 and 12. deg, my accuracy I thought got worse, the ball flight was never real straight. Went left or right depending on contact. But overall my distance of carry was the same or less, the ball came down steeper, so there was less roll. The end result was a a shorter average drive of about 5-7 yards when compared to my R1 driver. I had used the 2013 titleist, Callaway and cobra. The cobra was the worst. The only shaft available was 50 gram adilla stock.
Once I locked into the high loft setting of 11.5 with SLDR I played with the sliding weight just tiny bit. When I set the wieght to the extremes fade or draw, it really drew or really faded. With the weight just outside of std I fund me desired ball flight & I gained close to 10.5 yards average distance further than my previous R1 driver set at 9.0 degrees. So my new specs are 1850 RPMS, <13 degrees launch, 256 carry and a total average of 268 yards. My carry was almost landing on my previous total yardage.
I urge you to consider lofting up when trying this new SLDR, the RPM reduction is sick, don't just grab one off the rack or assume you are a 9.5 or 10.5 you'll be disappointed and will possibly be wasting your money.
This isn't an infomercial, just my conclusions, you mileage may vary!