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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.
Scilly.Suffolk-
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.
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using a 103mm Tifosi BB for a 46mm chainline
Was that 740x or 7410 cranks? 7410 is designed for 103mm BB
Edit: just looked at the pix, as you were. I think the chainline would be closer to 43mm if you put 740x cranks on a 103, but I'm just guessing at what the original line was.
svenhöek
gbj_tester
Dura Ace 7402 cranks - are they ISO or JIS? Can't get a definitive answer anywhere . Looking to go low Q-factor with them so won't be using the recommended 112mm BB but need to know which taper before ordering a BB. Placed them on a 107mm UN-55 BB and they seemed to be a bit far out visually on the spindle (and I measured Q at 138mm) but I'd rather not jump to conclusions.