I suppose the rear fork , rather than rear triangle makes it possible..
BB shell and rear hub have to form a single unit, [ not up on D'Hons]
and the belt tensioned with much more pull than a chain uses.
any bike that has a hinge behind the BB won't work, well.
Already a unified rear portion
the Bike Friday Tikit jumped on the belt thing as soon as they came out.
they just added a stay split to get the belt through..
their customers wanted the more than 3 speed hubs , though..
not much more, considering the outlay..
the new Silk redesigned and put the BB on the front of a rear fork assembly..
Last edited by fietsbob; 03-14-13 at 11:41 AM.