Originally Posted by Spyder
I shortened my Titleist 910 9.5° D3 last season from 45" to 44.5". My distance was shorter and my ball flight ended up being noticeably higher than it was at 45". I thought I was crazy so I went to a launch monitor at Windmill Lakes and hit a 45" and 44.5" side-by-side (same shaft). I actually did end up losing nearly 15 yards on average according to the on-site fitter and I did not really benefit any in terms of accuracy.
One thing that I am leery about though is that half of an inch can result in -15 yards. That did not sound right to me and I still can't grasp that concept even today. After the driver was cut down 1/2", no weights were added because I wanted to experiment with the club as it stood. However, I still cannot explain or figure out the increased height in my trajectory from simply shortening the shaft. One fitter suggested that the torque, or "kickpoint", was unfavorably altered for my swing by shortening the shaft from the butt-end. However, a representative at a local club near my home said that is completely impossible to do and it's all in my head.
In order to avoid all of the conflicting theories I have heard from "professionals" around me during this past season, I intend to just go through a fitting for a new shaft for the upcoming season. Though, by that point, I may just end up opting to buy the new 913 D3.
Who ever said that the kick point or torque was altered is crap. Here's the thing, these shafts are meant to be cut down. They come in stock lengths and be trimmed. Wood shafts are usually 46" and then trimmed down for multiple of purposes. They don't sell individual 3 wood shafts versus driver shafts. That's why many of those shafts have a butt end of the club that is pretty much uniform for about 8-12 inches to allow it to be cut down to size. Cutting down the part of the shaft that actually has the taper on it, would damage the performance, and ruin the shaft.
You should not loose 15 yards of distance. That would mean you turned your driver into a 3 wood, which is not right. Even if you cut down the driver and inch, it should still have an inch extra length on the 3-wood, plus the lower loft. My only guess, the lighter club threw your swing off, so you might be loosing a power accumulator in the swing.
One book i read says making the golf club 1" shorter will decrease the swing weight by 3, because your moving the 14" measured focal point closer to the clubhead. I would add some lead tape to the driver head and see if that helps.