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TM-
Nope... @mdcc_tester would tell you why... ;)
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I always assumed that the Hatta BB was the same taper as the Sugino 75 BB (they give exactly the same chainline) but I don't know about other NJS cranks and BBs.
I'd be interested to know if Sugino are an exception and other NJS cranks are ISO, or if all NJS components are an intermediate taper like the Sugino 75s.
coventry_eagle
Rudder2
75's have always been their own taper I think. They're closer to ISO than JIS but Sugino still reckon it deforms the cranks if you use an ISO BB. It's probably less of an issue if you've got a sealed BB as you don't need to be taking the cranks on and off for maintenance so often.
Sugino do a sealed BB now (CBB-SG75) that is apparently quite good, that's what I'm going to use on my Brompton when I switch the cranks.