Originally Posted by
jambon
hmmm I thought so , the cottered BB was 136mm but the square taper chainsets that I have looked at all recommended they be set up with 115mm BBs , 136mm seems like an almost absolete spindle lenght so I think this could be a difficult search for a 136 square taper BB and a matching chainset
Can you put the BB back together ? , if you can measure the distance between the smallest chainring and the chainstay . To give you a idea what the chainline should be . The longest axle in a seal unit is 127 MM from end to end . as long there 5 mm between the chainring and the chainstay ,your chainline will be fine .