I was riding into work a few days ago, and I started thinking that the old, internal-gear style drivetrain would really suit my purposes. It would be for a commuter bike with no real hills to speak of. I still have to shift a few times; but I always stay on my big chain ring in the front. I began thinking about finding an old bike with said drivetrain to try it out.
Lo and behold - as I'm sure many of you already know - Shimano, SRAM, etcetera, re-invented this wheel several years before *I* re-invented it.
After reading most of Sheldon Brown's site, and a few other sites, I've decided to buy one and try it. I'm probably going to go with a Nexus 7 speed as a optimization between cost and performance.
My real goal is to reduce maintenance on my beater commuter; and as such I'd like to get rid of the smaller front chainrings.
What is a roller brake? Is it the same as a coaster brake? Drum brake?
What's the difference between the 'premium' Nexus eight speed and the non-premium version?
I have vertical dropouts; so now I need some sort of chain tensioner (don't I?). Where would I get one? Is it just a common derailleur? I'd really like to go to just one front chainring.
Has anyone used the older indexed thumb shifters with the seven speed Nexus? Comments? Is the current shifting mechanism good enough?
When I used the search tool, another thread said that common thumb shifters could be made to work - I think they were XT's. Everything else I've seen disagrees. Does anyone have any confirmation?