As disc brakes become more common on road bikes (this current model year saw many models finally hitting bike shop inventories) there is myriad new issues for us to address. Some of them have been dealt with in the mountain bike world for years while others are new and unique.
Lennard Zinn; a tech writer for VeloNews and the author of many authoritative bicycle maintenance books (not to mention a framebuilder - where does he find the time?), wrote an excellent piece in answer to a reader's question and it appeared at velonews.com this morning.
Here's the exchange which I thought was too good not to share:
I’m planning to replace the housing with something compressionless. I’m wondering if the longer cable pull of the new Shimano levers doesn’t match the calipers well — maybe the standard BB-7 calipers would be better? I could also try different pads or a larger rear rotor. I’ve heard from others the burn-in period was really long on their road bikes, so maybe they will continue to improve.