Mitsubishi Diamana TB Series 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 venerable Diamana Blue Board is now in its 5th generation, The 2021 Diamana TB series. Rather the reading me talk about what is new, just watch this video from Mitsubishi Chemical.
The Diamana Blue defines the most popular shaft archetype, a soft mid profile. This archetype is available from virtually every driver shaft company. Many brands produce exact copies and many other produce variations of the archetype. The EI profiles of the Diamana TB Series are not much different than the 4th generation BF series. What is noticeably different are manufacturing tolerances. Mitsubishi Chemical is vertically integrated. They make their own fiber, resin and prepreg. That gives them full control over design and manufacturing. The TB series is available in 21 versions from 40 to 80 grams and in flex designations from R2 to TX. I validated what they claim, there is very little variance in Butt diameter and balance through the matrix of shafts. That makes life easy for the fitting technician.
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Russ