Im looking to build a 29er fixed gear as an icebike.
But i have a few questions.
How much movement do i get if i have a eccentric bb?
Has anybody here tried one of these double cogs: http://sheldonbrown.com/harris/fixed-sprockets.html#dingle
are they any good? i was thinking about geting the 17/21 and using it with a double chainring. i was also thinking of getting a flip-flop hub so i can have a double freewheel on the other side so that i can do some singletrack in the summer.
i have a raleigh XXIX with the eccentric BB. it’s worked pretty well. have to snug it up some times. there was about 2 links worth of adjustment, which wasn;t enough to run any gear ratio. had to go through a little trial and error.
I’m going to be using a monocog as my ice bike this winter. I’ve got it set up with a disc brake on the front and a fixed (tomicog)/free hub on the rear, and two coats of framesaver. Now all I need is a set of quality studded tires.
The only drawback of the monocog as a winter bike, IMO, is the lack of fender mounts. I’ll be using a strap-on.