Graphite Design Tour AD UB Driver Shaft Review
By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Highlands Performance Golf Center, Carrollton Texas
Golf Digest Certified America’s 100 Best Club Fitter
The Graphite Design Tour AD UB is the second shaft from Graphite Design to use Torayca ® M40X pre-preg. Torayca ® M40X has both high strength and does not deform when loaded. Tensile Modulus is the mechanical property the relates force to deformation. The material in the UB does not elongate when loaded. In a golf shaft, the energy applied is not lost to elongation. It is stored in the shaft and theoretically is released at impact resulting in higher ball speeds.
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Russ
I have seen many shafts over the years with a woven material placed in the butt of shafts. This is as an indication that shaft manufactures recognize the thin walls near the but of the shaft deform and oval under load. The ovaling of the shaft in this area can contribute to shot dispersion. The woven Kevlar® material use by Mitsubishi is the only material I have measured to date where I can see a measurable effect. Hoop deformation significantly dips in this section of the shaft. Reduced hoop deformation in the 1K weave is the same as the CK weave. Mitsubishi tells us the 1K material transmits more feel.