I want to build a new folder for commuting. I have some ideas but need some tec questions answered.
Lets start by saying that I own a Bromton and a Bike Friday NWT. I want to build something that has 20" wheels, very large gear range, internal hub gearing no derailers or slack tentioners, front hub dyno lighting, folds smaller and neater then my NWT. I know that the Birdy black would do most of this but they are very over priced in the USA, with limited support and 18" wheels.
Here is what I am thinking of building. I need to know if the gearing can be setup the way I want.
Using the Dahon MU-XL
http://www.dahon.com/us/muxl.htm It comes with horizontal drop outs,
8 speed Nexus hub, front dyno hub.
Option 1
8 speed Nexus Hub in rear
Larger front chain ring
Schlumph Mountain-drive in bottom bracket
Will the Mountain drive fit in a Dahon bottom bracket?
Option 2
Rohloff Speedhub - 14 in rear
Will the Rohloff Seedhub fit in the rear drop outs with out using a tenioner? How wide are the rear drop outs?
Option 3
Rohloff Speedhub in rear
Mountain drive in bottom bracket
This is not going to happen because of cost and overlaping gears. But fun to think about.
Will any of these Options work and what are the good and bad points?