Shimano 9 spline cogs are all the same*, hyperglide have 1 thick and 1 thin spline.. measure?


* Sturmey Archer S3X and the Brompton 3 by 2 6 speed hub also made by S-A use the 9 spline.. (& you can get Gates Belt Cogs)

why not start out with a freewheel hub wheel , you can build it dishless and have a stronger wheel ..

symmetrical bracing spoke angles are a winner.





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