Anyone who has ridden with me knows that I’m a full-fledged victim of Avid brake warble/howl/squeal/whateveryouwannacallit. Looking for solutions, I found this thread on MTBR, which led me to believe that the noise that Avid brakes make is somewhat akin to leg cramps in that there are a lot of theories with some anecdotal evidence, but no proven, specific reasons behind why it happens.
Also found in that thread is this stuff: Squeal Out
I figured I’d give it a shot and sent the guy a private message asking for the free sample he was offering. Not long after, I got an envelope in the mail containing a Ziploc bag of gritty paste and (somewhat mis-spell/comma-ed) instructions for application:
Against the advice of the instructions, I applied it to both brakes at the same time on my geared A9C. After that, Ryan and I went to Stanky Creek for an easy ride. Not a peep out of my brakes. Sweet! I’ll try it on the older, noisier Elixir CR brakes this morning on the SS and report back in a few weeks on the results and the long term effectiveness.