Vibration under braking - SV650.org

10-09-09, 10:21 PM

Similar to http://forums.sv650.org/showthread.php?t=107342 this thread, on my K3 750 GSXR front ended bike (a '00 SV650s), when I brake a little I can feel something from the disc, and when I'm trailing the brake fairly hard into a right hander there is a massive, huge vibration from mainly the right hand disc. Now I've just changed discs and pads and the problem is still there- it was there before and I put it down to the disc.

Any ideas?

Thanks in advance guys

Red Herring · 11-09-09, 08:14 AM

Have you checked the wheel run out and balance? Didn't you have a small off recently at Lydden? Is it possible the front tyre has been moved on the rim? If they're all OK I'd probably check the forks next.

flymo · 11-09-09, 08:23 AM

or both sets of discs could be warped, check them with a dial indicator

11-09-09, 09:23 AM

+1 warped disc

11-09-09, 09:39 AM

If it's warped discs you'll feel the lever pulsing under straight line hard braking ..

TSM · 11-09-09, 09:45 AM

Ive done the same on my SV/GSXR, i warped several sets of disks, could also be wheel bearings. All depends on if you can feal the brake lever pulse or not.

11-09-09, 11:15 AM

I agree in that it sounds like a warped disc, at low speed you will feel a pulsing through the lever where as at higher speeds it feels like a harsh wobble/vibration.

11-09-09, 11:16 AM

Could be your bearings?

11-09-09, 11:27 AM

Quote:

Originally Posted by vardypeeps

Could be your bearings?

You would feel that all the time, not just when braking.

As a precaution lift the bike onto a front a rear paddock stand and check for free play.

yorkie_chris · 11-09-09, 11:30 AM

I had a knackered wheel bearing which would only cause wierdness under braking. Not what I would call "massive vibration" though.

10-09-09, 10:21 PM	#1
chakraist Guest Posts: n/a	Vibration under braking Similar to http://forums.sv650.org/showthread.php?t=107342 this thread, on my K3 750 GSXR front ended bike (a '00 SV650s), when I brake a little I can feel something from the disc, and when I'm trailing the brake fairly hard into a right hander there is a massive, huge vibration from mainly the right hand disc. Now I've just changed discs and pads and the problem is still there- it was there before and I put it down to the disc. Any ideas? Thanks in advance guys

11-09-09, 08:14 AM	#2
Red Herring Member Mega Poster Join Date: Dec 2007 Posts: 2,708	Re: Vibration under braking Have you checked the wheel run out and balance? Didn't you have a small off recently at Lydden? Is it possible the front tyre has been moved on the rim? If they're all OK I'd probably check the forks next.

11-09-09, 08:23 AM	#3
flymo Member Mega Poster Join Date: Jan 2008 Location: North West Posts: 3,124	Re: Vibration under braking or both sets of discs could be warped, check them with a dial indicator

11-09-09, 09:23 AM	#4
custard Guest Posts: n/a	Re: Vibration under braking +1 warped disc

11-09-09, 09:39 AM	#5
drag Guest Posts: n/a	Re: Vibration under braking If it's warped discs you'll feel the lever pulsing under straight line hard braking ..

11-09-09, 09:45 AM	#6
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	Re: Vibration under braking Ive done the same on my SV/GSXR, i warped several sets of disks, could also be wheel bearings. All depends on if you can feal the brake lever pulse or not. __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

11-09-09, 11:15 AM	#7
Dangerous Dave Guest Posts: n/a	Re: Vibration under braking I agree in that it sounds like a warped disc, at low speed you will feel a pulsing through the lever where as at higher speeds it feels like a harsh wobble/vibration.

11-09-09, 11:16 AM	#8
vardypeeps Guest Posts: n/a	Re: Vibration under braking Could be your bearings?

11-09-09, 11:30 AM	#10
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Vibration under braking I had a knackered wheel bearing which would only cause wierdness under braking. Not what I would call "massive vibration" though. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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