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Worthwhile compromise of a large diameter axle, Vs decent bearing size and sealing. Or Emperors new clothes again and another pointless "standard"?
The easiest way to think about it is that they CBA to make 24mm and 30mm axles and a 29mm axle lets them get equivalent performance in sensible BB specs like BSA and BB/PF30/386Evo and acceptable durability in dumb shit like BB90/86.
Howard
gbj_tester
Following on from BB30 cranks a few posts back
SRAM Dub 28.99mm cranks?
Worthwhile compromise of a large diameter axle, Vs decent bearing size and sealing. Or Emperors new clothes again and another pointless "standard"?