08-02-2013, 03:27 AM
(08-01-2013, 10:02 PM)The ferret_imp Wrote: Well yesterday my brother and I pulled my pads, took a mill bastard file to them, then some heavy duty sand paper in a figure 8 pattern, blew them off and reinstalled. While the pads were out, I also scotch padded both sides of the disc again. Then I took a ride and did the 45 to 15 mph rear brake only thing about 5 times. Result : It's a little better, but certainly not what I'd expect.
I may stop at the dealership and let one of their techs take it for a ride and see what he thinks.
Mickey,
I am certain that you have air in your rear brake system. I deal with this a lot. On my aerobatic aircraft (they use independent hydraulic disc brakes just like our bikes) that spend a lot of time inverted or at negative G's some brake brake fluid is often lost out of the vent line and that introduces air into the system which causes the brake to get very spongy, loosing 75 to 90% of it's effectiveness. The fluid is not compressible and it provides a direct link to your calipers. Any air in your system is very compressible so instead of squeezing your brake pads against the discs you are compressing that air. Glazed pads will degrade braking effectiveness but not by a ton. Air in your system does. Get out your shop manual, bleed your rear brake system, fill it with fresh fluid, and then send me a thank you note. Cheers bro.
Chip