Originally Posted by hulagun
Well, you've confused me.
I'm not looking at asymmetrical BB's, just the Sugino RD-48 and the Shimano 107mm UN series options.
Once I know the actual chain line - shouldnt I be able to get the BB correct on the first try?
I only put that info out there 'cuz I was lazy to do the research. Here's the actual dirt on the Shimano UN-series:
103mm: symmetrical
107mm: symmetrical
110mm: asymmetrical, non-drive side 3mm longer