Front brake issue - SV650.org

gruntygiggles · 22-06-10, 10:32 PM

It's got a flat spot. Pull it on and get braking, great. Then pull a little harder, bike still moves forwards meaning I have to then squeeze it really hard to get it to stop. Have used rear brake to help make up for it but am not going to ride again until it's sorted.

Only noticed it yesterday, before the whole bailer twine/rear locking up incident, so not that.

The pads and disks are fine, plenty of life left, the brake lever is fine. When fully engaged there's still a good 2.5cm between it and the bar at least.

Brake lines look like they could be original but never had a problem before yesterday.....brakes have always been good.

Any ideas???

22-06-10, 10:39 PM

Hiya, just a thought, but have you tried replacing the brake fluid and bleeding the full circuit, thats all I can think of.

Hope you get it sort'd soon

gruntygiggles · 22-06-10, 10:43 PM

Yeah, we'll do that as a matter of course when we look at them tomorrow or later in the week.

TSM · 22-06-10, 10:44 PM

sounds like a warped disk but you should feal that as pulsing though the lever, check disk runout

gruntygiggles · 22-06-10, 10:57 PM

Quote:

Originally Posted by TSM

sounds like a warped disk but you should feal that as pulsing though the lever, check disk runout

Not feeling any pulse through the lever, but will deffo check that out...thanks.

Stu · 22-06-10, 11:32 PM

From your description, could it be glazed pads? How old are they How abused are they

take them out, rub them on some clean smooth tarmac/concrete or spray with brake cleaner - whatever you're happy with doing.

gruntygiggles · 23-06-10, 12:13 AM

Hmmm, never heard of that Stu....any more info?

_Stretchie_ · 23-06-10, 09:28 AM

I'll give them a good clean, check the pads and run some new fluid through them.

yorkie_chris · 23-06-10, 12:02 PM

Check master cylinder pivot is nice and free. You sometimes get uneven friction in middle of stroke somewhere.

General service of full system should sort it.

gruntygiggles · 23-06-10, 01:23 PM

Quote:

Originally Posted by yorkie_chris

Check master cylinder pivot is nice and free. You sometimes get uneven friction in middle of stroke somewhere.

General service of full system should sort it.

Think that's what Dan has planned

22-06-10, 10:32 PM	#1
gruntygiggles DaffyGingerBint Mega Poster Join Date: May 2008 Location: Melksham Posts: 1,577	Front brake issue It's got a flat spot. Pull it on and get braking, great. Then pull a little harder, bike still moves forwards meaning I have to then squeeze it really hard to get it to stop. Have used rear brake to help make up for it but am not going to ride again until it's sorted. Only noticed it yesterday, before the whole bailer twine/rear locking up incident, so not that. The pads and disks are fine, plenty of life left, the brake lever is fine. When fully engaged there's still a good 2.5cm between it and the bar at least. Brake lines look like they could be original but never had a problem before yesterday.....brakes have always been good. Any ideas??? __________________ 2012 Welsh TT http://forums.sv650.org/showthread.php?t=171244 RIP Hovie baby

22-06-10, 10:39 PM	#2
Gixxer1 Guest Posts: n/a	Re: Front brake issue Hiya, just a thought, but have you tried replacing the brake fluid and bleeding the full circuit, thats all I can think of. Hope you get it sort'd soon

22-06-10, 10:43 PM	#3
gruntygiggles DaffyGingerBint Mega Poster Join Date: May 2008 Location: Melksham Posts: 1,577	Re: Front brake issue Yeah, we'll do that as a matter of course when we look at them tomorrow or later in the week. __________________ 2012 Welsh TT http://forums.sv650.org/showthread.php?t=171244 RIP Hovie baby

22-06-10, 10:44 PM	#4
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	Re: Front brake issue sounds like a warped disk but you should feal that as pulsing though the lever, check disk runout __________________ 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

22-06-10, 11:32 PM	#6
Stu Trinity Mega Poster Join Date: Jun 2006 Location: Guildford Posts: 8,027	Re: Front brake issue From your description, could it be glazed pads? How old are they How abused are they take them out, rub them on some clean smooth tarmac/concrete or spray with brake cleaner - whatever you're happy with doing.

23-06-10, 12:13 AM	#7
gruntygiggles DaffyGingerBint Mega Poster Join Date: May 2008 Location: Melksham Posts: 1,577	Re: Front brake issue Hmmm, never heard of that Stu....any more info? __________________ 2012 Welsh TT http://forums.sv650.org/showthread.php?t=171244 RIP Hovie baby

23-06-10, 09:28 AM	#8
_Stretchie_ Large Member Mega Poster Join Date: Jan 2006 Location: Minsterworth, Gloucester Posts: 2,353	Re: Front brake issue I'll give them a good clean, check the pads and run some new fluid through them. __________________ How to amuze an idiot: Look right-> <-Look Left

23-06-10, 12:02 PM	#9
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Front brake issue Check master cylinder pivot is nice and free. You sometimes get uneven friction in middle of stroke somewhere. General service of full system should sort it. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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