ACCRA Tour Z RPG HBP & LBP Driver Shafts 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
High Balance and Low Balance designs compliment the ACCRA Tour Z shaft, released in 2017. High modulus. low resin prepreg results in low wall thickness, enhancing feedback. Uniform taper provides maximum energy transfer down the shaft. A woven prepreg from Toray runs down the length of the shaft, resulting in a uniform torque profile down the shaft. ACCRA tells us this creates the lowest resin to fiber ratio of any shaft they have ever designed. The shafts are made in a Japanese and the quality and conformity across weights and flex designations is as good as I have seen. Lets explore the EI Profile flex distribution of these shafts and look at how the movement of balance point changes a shaft.
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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.
