K so my brakes were fine and then after I wrecked my rear brake started to drag, i.e. semi-locked up. It's still rideable but not safe. Obviously. I felt my rotor the other day and it feels really worn down and uneven. It also only rubs on about 70% of the rotor. The rest just feels normals, rotates just fine so I'm thinking its warped maybe?? Is it just time for new brakes or what else can I do?? Thanks in advance.

 

rotors don't warp... some thing is misaligned. have you realigned the rear wheel since eating asphalt?

 

I tightened my chain yesterday and when I did I lined up the notches on my swingarm so yes. Is there something else I can or should do to align it more??

 

well those marks are only a guide, use some form of straight edge that you can run down the chain to see if the rim is really paralell to the chain. And definetely rebleed the system if the bike fell on the right (ie brakes) side.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">rotors don't warp...</TD></TR></TABLE>
I didn't know that. Thanks
http://www.stoptech.com/tech_i...shtml

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">rotors don't warp... </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by icedmocha &raquo;</TD></TR><TR><TD CLASS="quote">
I didn't know that. Thanks
http://www.stoptech.com/tech_i...shtml</TD></TR></TABLE>

I was going to say something but i figured maybe bikes were differnt than cars.

 

IF/when you take apart the brakes make sure you clean the piston area really good with brake cleaner. When the piston and dust shield get alot of brake dust in it the piston will sometimes not retract fully causing brake drag.

Just another thought.

Steven

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">rotors don't warp... some thing is misaligned. have you realigned the rear wheel since eating asphalt?</TD></TR></TABLE>

Wrong.

Rear calipers get covered in crud and need to be cleaned properly say every 1000 miles or so. Take out the pads then clean the caliper with a toothbrush and some hot soappy water. Refit the pads with some copper slip on the backs of them and some more slip on the pins. When the caliper is off spin the wheel and look at the disc. If it is running out then get another from the breakers or a new copy from somewhere as its only a rear.

If you want to make a really good job of cleaning the caliper then place someething in between the pistons and pump the pistons out a little. Clean all the way around them with degreaser dry them off with an airline and then 'paint' all around the piston with silicone grease. Then push the pistons back into their bores. You will have no stiction at all if you do this. Just be careful that you dont run out of brake fluid when you pump them out though or pump them out too far. A few mm past the normal wear line should be enough.

 

lets just help this guy get his rear brake going again...