What length BB spindle do I need for my Soulcraft singlespeed?
If you’re running a crank with an “integrated” spindle and crank (where the spindle is bonded/welded/pressed into one of the crank arms), then you don’t have a choice on spindle length. If you’re running a square taper crank/BB then it depends on the brand of crank and size of chainring. We recommend the White Industries ENO crank with either a White Industries or Phil Wood BB. Keep in mind all Soulcraft BB shells are 68mm wide. White Industries designs their rear hubs around a 47.5mm chainline (centerline of frame to center of freewheel teeth). To match this they recommend a 113mm spindle on their cranks to get the chainlines to match. That crank and spindle combo gets a little tight on our frames so we recommend a 116mm or 121mm spindle. This throws your chainline out slightly but it’s negligible and in our experience isn’t noticeable when riding. Keep in mind that most other singlespeed hubs are designed around a 51.5mm chainline so if you’re running a White Industries crank with a
