Square Taper Cranksets: Road vs. Mountain
Is there a difference in chainline between road cranksets and mountain bike cranksets? I am specifically concern about triple cranksets. If I replace my mountain triple with a road triple, will the chainline be the same?
I have measured the centerline (chainline) of my cassette and found it to be 42.5mm (using the centerline of the frame as the reference datum). So I would like to install a crankset with same centerline. The triple mountain crankset that I have currently installed (FSA) measures 50mm from the center ring to the frame center.
If I switch to a road crankset (likely a Sugino XD600) will the chainline change? Sugino actually recommends a bottom bracket axle of 118mm to get a chainline of 50mm. So it seems to me that these two (Sugino road & FSA Mountain) cranksets are different.
Is this the standard way that tapered square cranksets fitu, i.e., do all road cranks fit the same and all mountain cranks fit the same but the two are different?