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I have been using a 103mm Tifosi BB for a 46mm chainline ('ring on the outside)
That sounds wrong(/different :)). I have them on a 102mm iso bb + 1.5mm spacer and that gives a 41mm chainline on the outside position. I think they are jis native. The original plan was a 103mm jis bb but I never got round to that. Should give same q-factor/chainline: 102mm ISO ~= 100mm JIS and spacer x2 gives 103mm...
Will measure again... tomorrow to confirm.
svenhöek
Scilly.Suffolk
I have been using a 103mm Tifosi BB for a 46mm chainline ('ring on the outside)
I recently bagged a 102mm Royce, but that will involve bigger hammers and could mess with my chainline. So I might just stick with the 103mm Royce I also have (but haven't yet fitted).
If you're worried about the whole JIS/ISO taper thing, then get HTII/Ultra Torque etc.