After messing with stuff and tweaking things, it turns out the only problem was the fuel flow! so it's not running great except for one thing, when i hit the rear brake it "bounces" and pushes back repeatedly. I have no idea what would cause this, at first i thought it was the new rotor, but i had it machined to a smoth surface, so i tried topping off the brake fluid and that didnt work, im running out of ideas, anybody ever experience this before?
Sounds like the same problem I have with my front brake. Kind of feels like the rotor is warped or there isn't equal pressure on the pads. Not sure so I'd like to see if someone has any idea what could cause this.
Did you change the pads as well as the rotors? Usually it's recommended to change both at the same time, since the pads and rotor will wear into each other. If you didn't, try scuffing the pads with 120grit paper and start with a new surface.
I've had to do that with bicycles that have brake issues from glazing over and such. Sand the rotors and pads and break them in all over...
If that isn't the case, try taking the caliper off and greasing the sliders. Also make sure the caliper isn't mounted with a toe in or out.
If the caliper isn't squeezing evenly or had a toe problem the pads will "dig-in" to the cuts/drills of the rotor and you'll feel the feedback.
If you can, look at how the pads contact the rotor while someone manipulates the brake and see if the front or back contact the rotor first.
My mountain-bike would do the same thing when I bought it, the front brake would make a ticking noise and I could feel it in the lever with little pressure. I looked and saw that the caliper was positioned with the front edge of the outer pad closest to the rotor, so with light pressure the corner of the pad would touch the rotor while the rest did not; just needed an adjustment.
I loosened the caliper mounting bolts, squeezed the brake, tightened the bolts, released the brake, and the problem went away.
I don't know if you can or should use the same procedure on a motorcycle, someone might come along with better information and more knowledge than me, but take a look and see what you find.
The calipers seem to be pushing the pads into the rotors at all times, just with varying pressure. i had to drain 80% of the brake fluid when i swapped everything out, and yes, brand new EBC brake pads and the new machined rotor
Disc is not sitting square against the wheel or when it was skimmed it was not properly clocked and the faces are not parallel or the faces are not at exactly 90deg to the axis.
You need to check the run-out using a DTI in a set up like this. Anymore than about 0.1mm will have an effect. That 1/10 of a mm and you just cant see that by eye.
(http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/05/fb/e9//small/0900c1528005fbe9.jpg)
Quote from: sledge on June 23, 2013, 02:28:40 AM
Disc is not sitting square against the wheel or when it was skimmed it was not properly clocked and the faces are not parallel or the faces are not at exactly 90deg to the axis.
You need to check the run-out using a DTI in a set up like this. Anymore than about 0.1mm will have an effect. That 1/10 of a mm and you just cant see that by eye.
(http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/05/fb/e9//small/0900c1528005fbe9.jpg)
I might have a similar setup somewhere, if not i can borrow a friends. Thanks for the info!