Originally Posted by
wandt
Interesting discussion...
I'll just list some of my changes and see if it applies to you. I started with an M6L in Seattle to cover some big hills. I found the shifting routine cumbersome and the 2 speed derailleur would jam too easily because of all the road grime sticking to it. To combat the shifting situation, I switched to a 5 speed S-RF5 rear hub. I love it...covers enough range without being much heavier than the 3 speed. Singlespeed-style drivetrain is much better...not a problem for you if you have a 3 speed.
I'm used to the old non-wide ratio X-RF5 on my Dahon. I've come to view it as ideal for my needs and if I stick with my Brompton (not convinced yet) I want this hub installed. Thing is it's no longer available and apparently even the shifters are different since the move to the 'W' range (the 5 speed version of which looks like nonsense to me, the gear jumps are too large). So it's going to get harder to come by spares. . . it's already very difficult to find shifters.
Incidently, are there issues with installing the S-RF5 on a Brompton? Do you have to remove spacers? I have a spare X-RF5. . . not sure what the axle length is and the required axle length.