Join Date: Jun 2010
Location: NW,Oregon Coast
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Sturmey Archer 3 speeds have alternate axles to build up a narrow axle hub .
Brompton uses a 120 wide Hub in their folders..
People have used The Sturmey 8 speed in Bromptons,
taking off and thinning axle spacers , to reduce width
Los of newer hubs are 135 width. Alfine 11 one of those. [afaik
I have a mountain climbing capability with an AW3 + a Schlumpf Mountain Drive,
a 2 speed planetary Crankset , Made in Switzerland.
so low range, offers the 3 hub gears another run thru.
Shift is internal, no change in the chain tension so no chain tensioner needed .
Herr Schlumpf also makes 2 overdrive cranks to use a small primary chainring set
the planetary multiplies the external cog ratio [1.65X or 2,5X]
Last edited by fietsbob; 03-31-11 at 11:08 AM.