Originally Posted by
wilfried
This is where I got very confused. I have a three speed Brompton, so no derailleur. Does it make sense to run that five speed wide range hub with just one sprocket, as a simple five speed, rather than a ten speed?
I can't answer the gear ratio question for you, but the first question is do you need more/different gears? I wouldn't be messing about with new hubs and gearing options if all you really need are rims.