It's a common misunderstanding that TA cranks use ISO threads, when in fact at least the older ones are JIS. The reason is simple: The Japanese copied the Stronglight/Herse/TA taper and then made it their JIS standard. So the JIS taper could also be called "French taper".
The ISO standard is based on Campy's cranks, which also are a copy of Stronglight/Herse, but they got it slightly "wrong" (or at least different), which is why the ISO standard is slightly different. (Most people seem to assume that ISO is European and JIS Japanese, so TA and others should be ISO. Not so.) The two tapers are so similar that the tolerances actually overlap. I have seen Campy spindles that were closer to JIS than to ISO... It's similar with pedal threads, where metric and BSC are so similar that TA used to offer just one set of pedals for both threads. So back to the original question, using a JIS spindle for a TA "Pro 5 vis" crank should not cause any problems. More likely than not, it is the correct spindle for this crank. Jan Heine Compass Bicycles Ltd. www.compasscycle.com On Thursday, January 7, 2016 at 10:38:11 AM UTC+9, Peter Adler wrote: > > Since the TA Pro V was an ISO crank (in all its generations, AFAIK) > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
