Brake Trouble

[tonymac]

Hi folks have a little bit of trouble.

While out on the bird on tuesday i noticed my rear pads were badly worn although not quite metal to metal thou close. i brought new pads last night(wednesday) and fitted them. all seemed good when i had finished. went to work on it today and found it was slowing down alot quicker. got the bike up on paddock stand to find it is bloody stiff to turn the wheel by hand,will not free spin even for a couple of seconds and the disc is getting very hot. i don't think its a warped disc as it does it all round the disc not just parts of it.
i had it apart again tonight to make sure i had done everything right and all seems ok apart from the inner pad looks like it is making contact more on the back half than the front half of the pad(hope this makes sence).
Does anyone have any idea's

Tony

 

[scotsy]

brake rubbing

My mate (rob/nwest) had his fork lowers done Gold by Jaws to match his wheels (jaws was servicing them and doing his 'spring mod' at the time) and for the next few weeks he had a load of trouble with his rear disc getting very hot so he tried new pads, locating pin etc etc but it turned out that the LH front caliper that 'pivots' and pushes another pushrod (that applies the rear brake when the front brake is being used with combined braking bl4hbl4h ) was not releasing the rear brake when the front brake was released. Turned out that the extra thickness of coating on the pivot point LUG on the LH fork was causing the pivot bolt to actually 'clamp' the bolt and not release it when the caliper rotation pressure was released.

Try 'loosening' the pivot bolt and seeing if the caliper 'releases' when the front brake is released (you can only do this when the front wheel is moving forward so you may need someone to push the bike forward for you as you check)

Might help, might be something else but its worth a look see

scotsy

 

[Duck n Dive]

The other thing that springs to mind is a sticky pot??

Did they all clean up nice an shiny? If one was sticking and not completley retracting you might get what you describe....

 

[andy102]

I had the same problem with a set of pads I put on the front of mine, fitted them and all seemed well, got 5 miles up the road and the bike ground to a halt

The pads were too thick and were just making contact with the disc, overheating and clamping the disc (they were a crap set of HH rated pads off ebay; I'll never do that again)

As a quick remedy I removed some pad material which sorted it until I purchased a set of EBC scintered pads, lurvley braking now :yo:

 

[R2B2]

Possible causes:

Sticking piston.
Sticking caliper slider.
Pad jamming in the slideway, or on the pad pin.
Pads too thick (if aftermarket ones)
Problems with secondary braking mechanics from the front end.

 

[tonymac]

The set i put on are the EBC set purchased from motorcycle dealer where i brought the bike from, will investigate and try some of the solutions you guys have suggested if no luck will have to take it to the dealer and get them to look at it.

would take it to John but i daredn't take it that far while the brakes are like they are, so afraid it will be dealer if i have no luck.

 

[R2B2]

Keep riding to the bare minimum Tony - if the disc get heat damaged they are bloody expensive. Use a trailer if you can ?

 

[tonymac]

Keep riding to the bare minimum Tony - if the disc get heat damaged they are bloody expensive. Use a trailer if you can ?

Will do m8, gonna strip the caliper tomorrow and give a damn good clean (its need it anyway) see if that cures the problem

 

[parttimepilot]

[/R2B2Possible causes:

Sticking piston.
Sticking caliper slider.
Pad jamming in the slideway, or on the pad pin.
Pads too thick (if aftermarket ones)
Problems with secondary braking mechanics from the front end.QUOTE]

As R2B2 said, Also though with thicker aftermarket pads, try removing the backing plates for a little aetra clearance for a few hundred miles.
Also make sure you torque the rear spindle up properly as over tightening it can cause the rear brake to bind.

 

[Duck n Dive]

I'd look very carefully at the caliper sliding pin as I've found that one starts sticking real easy on the back brake.


For some reason it does seem to stick unless well cleaned/lube properly.