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SGledhill |
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SGledhill L Plate Warrior
Joined: 19 Jan 2021 Karma :
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Posted: 17:37 - 19 Jan 2021 Post subject: Brake Caliper Help |
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Wondering if anyone can help, noticed my rear brake caliper moving a lot when the bike was up on the rear stand. I've not noticed this before wondering if there could be a problem, maybe a warped disc or something? Video of the caliper below.
https://youtu.be/eBHYZcl0D3o |
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Kris |
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Kris World Chat Champion
Joined: 03 Feb 2002 Karma :
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Posted: 17:40 - 19 Jan 2021 Post subject: |
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Place a fixed point near the disc as it spins and see if the gap increases / decreases as you spin the wheel slowly by hand. Is the rear wheel in straight? ____________________ NSR125RR - ZXR750H1 - ZX9R E1 - GSF600S - GSF600SK3 - VFR400-NC30 - SV1000N - ST1100-R - CBR900RR-R - GSF1200SK5 - GSF600SK1 - VFR1200FA - GSXR1000K2 - ZZR1400 D8F
www.prisonplanet.com |
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jaffa90 |
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jaffa90 World Chat Champion
Joined: 06 Apr 2016 Karma :
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Posted: 17:47 - 19 Jan 2021 Post subject: |
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"" maybe a warped disc or something?
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 18:10 - 19 Jan 2021 Post subject: |
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Either a warped disc or one that's not running parallel with the wheel. Check for corrosion between the disc and the wheel. Probably need a new disc now anyway, you can even see where it's worn oddly by striking the pad. ____________________ “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. |
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droog |
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droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
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NJD |
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NJD World Chat Champion
Joined: 11 Mar 2015 Karma :
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Posted: 20:05 - 19 Jan 2021 Post subject: |
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What were the symptoms you experienced during a ride that made you feel you needed to put the bike on the stand and look for an issue, or have you found this by chance?
Something's bent, or misaligned: either the rear wheel or the disc. In either case, and until you find the issue and replace the part, I wouldn't ride that again.
Discount the brake calliper for now, and remove it from the bracket and leave it hanging loose. Look at the brake disc from above (dead straight downwards) and from behind (dead straight from behind) and see if there's visible wobble. I'm sure you can get run-out gauges to test for this, but if its wobbling enough to see I'd be replacing it.
In terms of the wheel you can, as suggested, check the bearings; but usually you'd feel this to some degree during a ride if they were on their way out. Hold the rear wheel with one hand at centre top and one hand at centre bottom and wobble left to right: if there's any strange noises or play then they need replacing.
Other things that spring to mind as a possible cause are: bent wheel axle, wheel misaligned during chain adjustment or axle not torqued up to spec.
You may also, once fixed, want to look at replacing the rear brake pads as that wobble may have caused damage to one, or both, of the face of the pads currently in there. ____________________ The do it all, T̶h̶e̶ ̶b̶r̶o̶k̶e̶n̶ ̶o̶n̶e̶,̶ ̶T̶h̶e̶ ̶b̶i̶g̶ ̶l̶u̶m̶p̶,̶ ̶C̶h̶o̶n̶g̶ ̶N̶o̶o̶d̶l̶e̶ |
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bikenut |
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bikenut World Chat Champion
Joined: 21 Nov 2011 Karma :
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steve the grease |
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steve the grease Crazy Courier
Joined: 26 Jan 2018 Karma :
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Pigeon |
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Pigeon World Chat Champion
Joined: 27 Sep 2012 Karma :
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Posted: 00:57 - 20 Jan 2021 Post subject: Re: Brake Caliper Help |
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Ever left a rear disc lock on and moved the bike a bit and thought you got away with it?
......I have Did require a replacement disc. |
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Tankie |
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Tankie Crazy Courier
Joined: 24 Feb 2017 Karma :
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ThunderRat |
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ThunderRat Derestricted Danger
Joined: 31 Dec 2020 Karma :
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Tankie |
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Tankie Crazy Courier
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steve the grease |
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steve the grease Crazy Courier
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ThunderRat |
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ThunderRat Derestricted Danger
Joined: 31 Dec 2020 Karma :
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hellkat |
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hellkat Super Spammer
Joined: 12 Jul 2004 Karma :
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Old Thread Alert!
The last post was made 3 years, 84 days ago. Instead of replying here, would creating a new thread be more useful? |
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