Might be a good point for Greg, but in over 30 years working on BMW’s I’ve never had a bike brake disc wearing unevenly that has caused pulsing or juddering. Maybe I’ve just been lucky
front brake low speed judder
- Thread starter Johny w
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Might be a good point for Greg, but in over 30 years working on BMW’s I’ve never had a bike brake disc wearing unevenly that has caused pulsing or juddering. Maybe I’ve just been lucky
Johny w
Registered user
So do you think it's a slight warp?.....can a tiny bit of warpage cause my issue? Coz I can't find anything elseMight be a good point for Greg, but in over 30 years working on BMW’s I’ve never had a bike brake disc wearing unevenly that has caused pulsing or juddering. Maybe I’ve just been lucky
ELIMINATOR
Registered user
As Oneandonly said, check the bobbins.
Think about it, the holes through the discs get clocked up with road muck and brake pad dust. Same stuff sticks to the bobbins, I've sprayed brake cleaner on them , hit them with a mallet, this was on a FJ1200, sorted geeza.
Think about it, the holes through the discs get clocked up with road muck and brake pad dust. Same stuff sticks to the bobbins, I've sprayed brake cleaner on them , hit them with a mallet, this was on a FJ1200, sorted geeza.
Sometimes the spring washers on the bobbins go walkabout as well and can cause the symtoms you describe.
Perhaps I should have said to check for warping AND to check for uneven thickness...
Johny w
Registered user
Did all that and it was the same I've removed the discs now and I'm going to replace them along with new wavey washers.......if the washers worked, surely a very slight warp that couldn't be seen with the eye, would be taken up by the washers!! I thought
You did, and both seemed fine apart from a fannys hair of warping!
I want to remove the ABS ring as it no longer serves any purpose.....will i need to put washers in its place or will the pistons just take it up?
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oh forgot this , i bodged mine with o'rings , til i got a disc kit
10PCS Floating Brake Disc Bobbins Circlip Kit For Yamaha Triumph BMW KTM discs | eBay UK
Bobbins :4.7mm thickness, approx 13.76 mm Dia. ( head is 19.6 mm). 10pcs Bobbins. Discs can vary from 6 - 12 bobbins,Pls place order base on your bike. These are Semi-floating application and will be converted to Fully floating when you remove the wave washers.
www.ebay.co.uk
also make sure reservoir is more than half full.
same ebay seller does cheap rear discs too.
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