New answers tagged fixed-gear
If you have an elliptical bottom bracket you won't need a tensioner. Ditto for dropouts that allow horizontal movement. If you are very lucky even a vertical dropout frame won't need a tensioner but as chains stretch over time this probably won't hold true for long. When the chain is too short you will have parts of the crank rotation that are very stiff. ...
You don't need a chain tensioner (by this, you presumably mean something like the Surly Tuggnut and not a pulley which will snap on a fixie). This article from Lennard Zinn (or equivalently, the one he cites from Sheldon Brown) covers how to tension your chain.
BMX levers work well. Tektro makes some decent ones, too. Just buy a pair and have a spare, or try and sell the second one on Craigslist if you really don't want to hold onto it.
A Diatech Dirty harry lever will fit - most bmx brake levers can be used. Dirty harry lever has got good cable pull and it's hard wearing as it was originally designed for bmx. I've seen lots of people riding fixed using this lever Dirty Harry BMX lever
I have a fixed gear and I don't find the rear brake useless. I actually Find it quite hard to skid the rear wheel with just the pedals unless I'm riding on wet roads. Personally, I also really like riding on the hoods, and I would leave the brakes they way they are. I would also leave on the drop bar levers because getting to a mountain bike style brake from ...
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