AW3 15t, Mountain Drive 54t ('21.6t' low),
torque transfer is via a lever with a knob on it.
the knob sits atop the frame part that contains the rear fold pivot axis.
3 top, of low, to 4, bottom of high range is a quick double shift.. both can shift at any speed... even stopped..
Yes, there are 2 overdrive versions, the 1.6 mentioned above and one that is the inverse of the reduction 2.5:1.. a 2.5x overdreve
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