Rohloff duplicates an MTB drive train in 14 ratios. range is wider than the NuVinci.
Im running a Sturmey AW3 + a Schlumpf mountain drive planetary
2 speed reduction gear crank in my folding bike.
Mr Schlumpf as 2 over drive hubs 1.6x and 2.5x
Not stepless like the other , but has 6 useful ratios over a wide range.
no front or rear derailleurs needed.
Last edited by fietsbob; 02-10-11 at 12:50 PM.