I SHOULD be able to do this...

[VeloVT]

To adust brake travel, I think the following will prove easier/more precise than fiddling with the barrel adjusters:

1. Locate the cable insertion point for the affected brake. You'll see an allen bolt on the brake caliper over the insertion point. Loosen it.

2. With one hand, grab the cable end (you *might* need pliers for this, but I usually don't), and with the other hand squeeze the calipers (leave the brake lever itself alone, just squeeze the brake over the rim) until the brake pads are about an eighth of an inch from the rim. While holding the pads in this position, pull the cable taught. Keeping pressure on the cable, tighten the allen bolt.

3. Check travel by using your brake lever. This takes a teeny bit of trial and error to get just the right distance, but you have a lot more control and ability to fine-tune than with the barrel adjusters. It's also pretty easy, but even easier if you can recruit an assistant (one person holds the brake calipers/cable and the other person loosens/tightens the allen bolt).

Good luck!

oh one more thing -- make sure your brake quick release is down when you do this.