front brake, very loud and sudden squeal

[thesmeee]

hi
front pads were binding a few days back so removed the calipers and pads, gave everything a good clean and put it all back. took it for a quick test just to check.
When i brake hard on the front everything is fine untill the bike is about to stop completely and the brakes give an almighty squeal, as the bike stops so does the noise.
Its defiantly not the suspension as ive had a look and pushed it up and down so that all seems good, ive checked the pads and they are free from any copper grease as is the disc.

Anyone got any idea what could be causing it? or how i can stop it

Paul

[cresad]

Hiya

You say the pads are free from copper grease does that include the backs and the edges as well ? I have found in the past just fileing an angle around the edges of the pads can help overcome some noises. Does it get worse or better as the pads get hot ?

Adam

[stinkwheel]

Make and model?

Definately haven't lost or incorrectly fitted any small bits of spring steel? Many callipers have small anti-judder spring clips. If they're missing or in wrong it can cause squealing. Not the only cause but it's suspicious you having recently had them apart.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[thesmeee]

[thesmeee]

[moonzoomer]

Check that the disc/s are firmly located and not warped and make sure they are clean and free from any king of oil and grease, if in doubt give them a good clean with a spirit such as meths, also check that the pad material itself has not been contaminated, you could try to clean the pads with a spirit or in extreme cases use a soft flamed blowlamp to burn off any oil/grease but if in doubt change them. If in doubt turf them out.

[Taught2BCauti...]

The Disc (and the wheel to some extent) will tend to amplify the smallest noise from the pads - so you are not looking for something major here.

Make sure the steel backing plates of the pads are not too tight a fit in the caliper - file the edges of the backing plates if they are.

Check the discs for 'lipping' around the outer edge, and remove any glazing to the disc surfaces with fine emery cloth or wet-and-dry paper.

Check that the spring clip is the right way round (if applicable - some can fit either way) and use copper grease where the backing plates touch the caliper and pistons. This helps with heat transfer and to prevent 'chatter'.

File a small chamfer around the edges of the friction material to help bed them in.
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[thesmeee]

thanks for all the replys, took them out and had a look, pads were clean but did have a very very smooth finish on them, roughed them up a bit and problem solved.

Thanks again