I would like to buy new crankset which is described as having 54 mm chainline for 110mm bottom bracket (this is square taped BB). Since I need 50mm chanline I calculated that I would need 102mm spindle, luckily I found such bottom bracket.
My worry is whether there is some other unspoken factor here, I mean can I just use this BB with shorter spindle or do I have to check something more? If more checks are needed what are they?
I currently run 44/32/22 chainrings and those are exactly the same as in the one I would like to by. The only differences are BB type (I will convert from HTII to square taped, same width, 68mm, both BSA) and crank length.