Originally Posted by 2manybikes
Edit post: I also thought it would be great to have two brakes when using the freewheel. However when I flip the wheel over to a smaller cog and pull the wheel back,the brake shoes are up in the middle of the tire somewhere. It sounds wrong, but to have a fixie to take full fenders and rear brakes a forward facing horizontal drop out is a lot less trouble.
That's an issue with track ends. If you run a rear brake a change cog size the brake needs adjusting.
The best solution is if they would use the old style Campy dropouts which are real deep, but the angle
doesn't require brake adjustments.