Originally Posted by
LupinIII
the only shady thing imo about QR levers on track bikes is the front doesn't have the lawyer tabs on most bikes. probably not a problem with old closed cam skewers, but i guess with the new open cam ones it could be dangerous. I've done it no problem, and it's less sketch than a lot of bikes on this forum, but not entirely suggested.
not a problem with open cam skewers either.
the only 'supposed' problem arises when you use a disc brake which puts forces to the open end of the fork dropouts, ejecting the wheel. but only IF you don't close the QR properly.
Originally Posted by
JacoKierkegaard
That double chainring thing is pretty much the exact setup I've heard of using, and it actually is supposed to work pretty well. Have a chainring that's just a couple teeth smaller coupled with a cog that's a couple teeth bigger and you have an appreciably lower gear with the ability to use the same length chain. Or go the other way with a bigger gear, as long as you make it just a couple teeth different for each it'll fit. Just loosen the rear wheel to get some slack to move the chain and you can get to a different gear pretty easily.
I remember reading a post on Fat Cyclist where he tried out a bike set up like this and really liked it.
I've read that you want the exact amount of teeth difference for the chainrings as well as the cog.
for a 17/19T, you want ± 2T difference chainrings.
for 17/21, you want ± 4T difference chainrings.