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 Post subject: brake noise
PostPosted: Mon Jan 31, 2011 7:48 am 
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Joined: Wed Sep 15, 2010 2:31 pm
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Location: Birmingham
any idea's... i took my GT I-Drive build out for a spin and found the rear brake(hope m4) was making a hell of a squeel when i tried to stop. i have adjusted it again to make sure the caliper is central. the pads are good although i have not fitted them they were already in the calipers when i got the brake set. anyone had this before/any idea's what may be causing it. thanks.


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 Post subject:
PostPosted: Mon Jan 31, 2011 9:52 am 
Anglian Deputy AEC
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Joined: Mon Oct 09, 2006 6:13 pm
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Location: Livin' in a dust bowl
Had M4's on my Marin Mount Vision. Have you tried cleaning the pads & rotor? Use disk brake cleaner to give the pads a good clean and let it dry. The first few applications of the brake will sound like a wailing banshee but after that normal service should resume.


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 Post subject:
PostPosted: Mon Jan 31, 2011 12:03 pm 
Gold Trader / rb Rider / Special
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or it could be that the rotors are cold
once you get some heat into them it should stop


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 Post subject:
PostPosted: Mon Jan 31, 2011 5:13 pm 
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hi ya. cleaned the pads and rotors also rode with the brake on a little to see if it made a difference. the noise has gone untill you pull hard on the brake then it's back again. going to bleed again i noticed that i could not get a skid, no matter how hard i pulled on the brake it would no go to a skid just got the squeel back..


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 Post subject:
PostPosted: Mon Jan 31, 2011 5:43 pm 
Anglian Deputy AEC
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Location: Livin' in a dust bowl
Are the pads contaminated with oil or brake fluid? If the lever feels spongy you have air that needs to be bled out. If it is firm the hydraulics are ok.

Disk brake pads need bedding in to reach maximum performance. On the road get up to about 20 mph and brake hard, repeat 10 times for front and rear brakes. You need to get the brakes very hot for them to bed in. You will notice the braking performance improving even more after a couple of off-road rides.


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 Post subject:
PostPosted: Mon Jan 31, 2011 6:22 pm 
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ok. cheer's i have just bled the brakes and they are fine. they feel firm and no different to my other bike. i'm out again tomorrow so i will have another go at bedding them in. i cant say about the pads as they were fitted when i bought the brakes, let you know. thanks ....


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 Post subject:
PostPosted: Mon Jan 31, 2011 6:35 pm 
retrobike rider
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I'd try new pads, or wear ear plugs :lol:


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 Post subject:
PostPosted: Mon Jan 31, 2011 6:53 pm 
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Mmmmm, which do you think will be cheaper... :roll:


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 Post subject:
PostPosted: Mon Jan 31, 2011 6:55 pm 
retrobike rider
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Location: Sunny Bognor Regis
Superstar are cheap, and worth looking at

I think i would replace with Hope ones tho


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 Post subject:
PostPosted: Mon Jan 31, 2011 7:22 pm 
Anglian Deputy AEC
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Having tried both makes I would go for Superstar components every time.


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