Originally Posted by
KCT1986
Another possibility, maybe, is to determine if a Shimano road triple would fit on your frame with the 109mm BB. The 109 is just aprox. 6mm shorter that the stock 118 triple version on the drive side. A little lower chainline but....
Attached is a pic of a Ultegra FC-6503 triple on a 109.5mm BB-5500. The smallest (30T) ring appears to be about in-line with the edge of the BB shell.
Hope that you can get the BB out but some possible option if all else fails.
I've never used anything but the recommended BB for a particular crankset. What's the limiting factor here? The chanring rubbing on the driveside chainstay? Bad chainline leading to poorer shifting (especially in small chainring and larger 2-3 cogs)? Is it just a try it and see if there is rubbing/crappy shifting kind of thing? 6500/5500 triples are moderately easy to come by to try.