SST PURE ®

The Proof
An independant study on spine aligning was commissioned by SST and conducted by Golf Science Consultants, Inc. GCS undertook a series of experiments to determine the effect of the shaft Principle Planar Oscillation Plane (PPOP) orientation on club tip oscillation, impact repeatability and kick velocity. The PPOP of the shaft is the plane at which, when the shaft is clamped at the butt and displaced at the tip, the resulting oscillation remains planar and does not "orbit."

The study was performed by J. Howard Butler, president of Golf Science Consultants, Inc., and former vice-president of shaft technology at True Temper.

Preliminary tests results clearly indicate that when the shaft PPOP is oriented in the hit direction the club becomes more stable, thereby improving impact repeatability.

The GSC study describes the effect on impact repeatability of PPOP orientation for three golfers of different ability (0 handicap, 12 handicap and 20 handicap). The three golfers performed nine trials with unspined, non-oriented clubs. The trials were then performed with "spined" clubs.

The standard deviations of impact points were calculated for each trial and compared. The repeatability change was calculated using the following formula:

Repeatability Change = ((Std. Dev. Unspined) - (Std. Dev. Spined))/(Std. Dev. Unspined)

The Results
Impact repeatability improved for all three golfers with all clubs when the shafts were spined and oriented in the hit direction. The repeatability improvement ranged from 14-51 percent.

> View the Complete Study Results