The Nexus 3 seems OK 42:20 is a 2.1:1 ratio.


2 bikes with a Rohloff hub, a Bike Friday pocket Llama, and a Koga WTR..

And 1 with a Sturmey Archer 3 speed and a 2 speed Schlumpf mountain drive crankset,
also, planetary , reduction or direct, geared. its a special for Brompton, model.

here it Is hilly. the MD allows the low range to run through the 3 speed twice.. 6 distinct gears.


the AW3 I drip oil into it via the hollow axle end , after temporarily removing the shifting indicator chain.
The MD gets some light grease eventually , it was well filled when shipped , and so,
some excess came out, in the initial miles, so its still fine..

Rohloff has a Flush and re lubricate procedure, done about once a Year.
mech is needle bearings and ball bearings in abundance..