Brian Manzella
Administrator
My good pal Steve Atherton, the VP in charge of Golf Instruction for GolfTec, did an article for Golf Magazine in November of 2010 on Jamie Sadlowski's swing.
I asked him about the 3D data for Jamie's swing, and here is Steve message to me:
I asked him about the 3D data for Jamie's swing, and here is Steve message to me:
"...from what I have, at roughly club parallel to the ground on the downswing (delivery position), and slightly prior to that (maybe hands at shoulder high) his hips were turning about 660 degrees per second. At impact, they were turning 210 degrees per second, and one frame after impact 120 degrees per second. They never recoiled or went backwards like Rory, they simply fired really fast, then slowed down to almost a standstill within a frame or two after impact, then sped back up.
The torso, which falls in line with almost every good ball striker we had on our system, was almost exactly double those amounts in each position, so the shoulders mid-downswing were turning 1320 degrees per second as they caught up to the hips, which were turned just slightly more than half of the shoulders at the top of the swing 59/110. Then just after impact the shoulders slowed to 400 degrees per second. The shoulders and hips were almost identical in amount of rotation 2 frames after impact (60 fps camera). "
. They'll now claim your information is bad and you have an agenda (but they don't of course). They've been told of the weaknesses/differences of 2D video compared to 3D systems in examining pelvis rotation speed and that still doesn't help. Next they'll come up with a new definition/calculation of face angle!
