Ron, I wasn't worried about the SKF BB's reputation, but just trying to figure out what could have happened to your poor crank. (I used to run a bunch of second-hand TAs without problems, but I switched to a René Herse on my Urban Bike as a precaution.) Interestingly, with the old TA crank tapers being JIS, that actually opens up a much larger range of suitable BBs.
The two tapers (JIS and ISO) are so close that you can get away with substituting JIS for ISO. We have several customers who run old Campagnolo Nuovo Record cranks (close to ISO taper) on JIS SKF bottom brackets. They use a 113 mm spindle instead of the 114.5, and that difference gives them the correct chainline (with a spacer to get the offset that the old Campy cranks required). The spindle penetrates 0.75 mm less into the crank, but that hasn't been a problem in practice. (Of course, we cannot officially recommend this.) Jan Heine Compass Bicycles Ltd. www.compasscycle.com On Friday, January 8, 2016 at 11:11:33 AM UTC+9, Ron Mc wrote: > > no worries Jan. It was clearly fatigue cracking that started at the > inside corners of the taper in the crank arm. [...]I've bought 3 SKF BB > from you, and would be the last person to badmouth them, so don't take this > next observation wrong. > -- 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.
