Had a slight pulsing of the brake lever for a while, which gradually got more pronounced; cleaned & spun the bobbins - some improvement. Had a closer look - one piston appeared to be sticking - quick clean, & much better.
Generally I ride fairly gently, mainly relying on gears & engine braking. However, on Sunday's pootle, the wide open spaces of the A5 had their usual effect on me. I found myself needing to brake quite hard approaching roundabouts etc. from 90-ish. Each time, there was substantial juddering of the front end; easing off, & re-applying pressure steadily, resulted in less judder, but it was still more than noticeable. Was somewhat disturbed by this.
Pads seem ok. Discs don't look obviously warped.
Thoughts, please?
Juddering front brake - advice please
Moderators: Aladinsaneuk, MartDude, D-Rider, Moderators
Juddering front brake - advice please
It flies sideways through time
It's an electric line
To your zodiac sign
I've got a Black and Silver Machine!
It's an electric line
To your zodiac sign
I've got a Black and Silver Machine!
-
fastasfcuk
- SuperBike Racer
- Posts: 1424
- Joined: Fri Jan 05, 2007 1:57 pm
- Location: Mansfield, Nottinghamshire
it's hard to tell if the disk's are warped by eye,if you've cleaned the bobbins and sure there ok i would say your disk or disk's are warped, you could try getting the wheel off the floor and spinning the wheel and just touching the lever with one brake line clamped at a time you'll know which side is giving you the problem. if they are warped theres a guy local to me that repairs warped disk's and fits new bobbins.
hope that helps.
hope that helps.
Pad material build-up on the discs could be a cause. Have you changed pads recently? I bead blasted my discs not so long back and the shuddering dissapeared completley but it came back within a 100miles. This all happened after i changed the pads. I wish i new which pads they were so i don't buy shit again (i thinkl they were EBC). Next time i am going for a decent set of pads.
Were the pads bedded in correctly? ..... this is a fairly lengthy read but it is well worth reading ..... http://www.stoptech.com/tech_info/wp_wa ... disk.shtml
“Scientists investigate that which already is. Engineers create that which has never been.”
-- Albert Einstein
-- Albert Einstein
Re: Juddering front brake - advice please
MartDude wrote:
Thoughts, please?
Sounds like warped / sticking discs, but might also be worth checking head bearings / wheel bearings just in case
Sorted! I think . . .
Got the discs off, and went through the bobbin tab washer bending routine, as per this (follow the links ) http://www.apriliaforum.com/forums/show ... rotor+tabs , and using lots of brake cleaner & spinning the bobbins.
On the short ride home from the workshop - no pulsing lever, & no juddering braking from 45 mph.
Will give them a more thorough test tomorrow
Thanks for your input, peeps.
Got the discs off, and went through the bobbin tab washer bending routine, as per this (follow the links ) http://www.apriliaforum.com/forums/show ... rotor+tabs , and using lots of brake cleaner & spinning the bobbins.
On the short ride home from the workshop - no pulsing lever, & no juddering braking from 45 mph.
Will give them a more thorough test tomorrow
Thanks for your input, peeps.
It flies sideways through time
It's an electric line
To your zodiac sign
I've got a Black and Silver Machine!
It's an electric line
To your zodiac sign
I've got a Black and Silver Machine!
-
mangocrazy
- Admin
- Posts: 3937
- Joined: Thu Jul 17, 2008 3:24 pm
- Location: Sheffield, UK