Argghh. Brakes! - SV650.org

Fallout · 18-08-12, 02:48 PM

Ok, so after hours in the garage, hours drive to and from Laurie's house to borrow his wheel, playing with discs and wheels to figure out warp issues, buying a new spindle and new wheel, I think I still have the same issue. Stupidly, I assumed it was the warpage because when I measured it, the disc was moving a full 1mm where as the recommended max warpage is 0.3mm. But after having a go with Laurie's wheel, I think the issue is elsewhere.

The brake lever basically clicked along. Pull it a bit, then resistance, then snaps on further, then resistance, then clicks on further again. It does this when stationary, so basically I've plebbed it all up and it can't be anything to do with wheel alignment or discs. It has to be with either the lever itself, the master cylinder piston, the callipers, or a small vole that lives in the handle bars.

Any thoughts on what to so next, bearing in mind I have to get it all done by tomorrow for the ride out. I have a callipers seals rebuild kit, bleed kit (one way valve on it to make it easier to bleed myself), and 1 litre of Castrol DOT4.

What should I do first?

18-08-12, 02:50 PM

Would you like me to pop over and have a play?

Fallout · 18-08-12, 02:52 PM

Mate if you're free, come round! We can drink cider and **** around in the garage. The mrs isn't even in, so we can wear her underwear too.

Mark_h · 18-08-12, 04:03 PM

Quote:

Originally Posted by Fallout

Mate if you're free, come round! We can drink cider and **** around in the garage. The mrs isn't even in, so we can wear her underwear too.

Your mrs is round here and it appears she left all her undies behind today

We've been having a giggle about your excessive wobblyness in the front end dept.

Fallout · 18-08-12, 06:10 PM

She's just scouting your house prior to me burgling it.

Littlepeahead · 19-08-12, 12:36 PM

Sell it. Get yourself a nice Curvy SV instead. This one looks good.

http://www.ebay.co.uk/itm/2001-Suzuk...item2321413b05

19-08-12, 06:10 PM

Quote:

Originally Posted by Littlepeahead

Sell it. Get yourself a nice Curvy SV instead. This one looks good.

http://www.ebay.co.uk/itm/2001-Suzuk...item2321413b05

LOL!

Fallout · 19-08-12, 07:17 PM

That LPH needs a good spanking.

19-08-12, 07:40 PM

I'm busy right now but I could probably spare some time in a week or so.

Sid Squid · 19-08-12, 08:37 PM

Grease the lever pivot and examine the pivot bolt for damage, and also the stub end of the lever for wear where it contacts the master cylinder piston.
The piston makes a linear movement, however the lever rotates about the pivot bolt meaning the stub makes a wiping movement across the end of the piston, commonly wearing flats on it.
As you pull the lever the flats drag across the piston in a notchy manner, not unlike that you're describing.
If the damage isn't too great you can effect a fix by carefully reprofiling the lever to a neat smooth curve - don't take too much material off or the lever can become loose at rest.

18-08-12, 02:48 PM	#1
Fallout Member Mega Poster Join Date: Jan 2012 Location: Basingstoke Posts: 2,983	Argghh. Brakes! Ok, so after hours in the garage, hours drive to and from Laurie's house to borrow his wheel, playing with discs and wheels to figure out warp issues, buying a new spindle and new wheel, I think I still have the same issue. Stupidly, I assumed it was the warpage because when I measured it, the disc was moving a full 1mm where as the recommended max warpage is 0.3mm. But after having a go with Laurie's wheel, I think the issue is elsewhere. The brake lever basically clicked along. Pull it a bit, then resistance, then snaps on further, then resistance, then clicks on further again. It does this when stationary, so basically I've plebbed it all up and it can't be anything to do with wheel alignment or discs. It has to be with either the lever itself, the master cylinder piston, the callipers, or a small vole that lives in the handle bars. Any thoughts on what to so next, bearing in mind I have to get it all done by tomorrow for the ride out. I have a callipers seals rebuild kit, bleed kit (one way valve on it to make it easier to bleed myself), and 1 litre of Castrol DOT4. What should I do first? __________________ MotoGoLoco - You knows it The Shed - Suzuki GSX-R 750 K1 \| Triumph Tiger 1050 K6 Fallout Bikes (VLogs, Tutorials, Bike Vids) Fallout Breakbeat (My Music)

18-08-12, 02:50 PM	#2
Thunderace Guest Posts: n/a	Re: Argghh. Brakes! Would you like me to pop over and have a play?

18-08-12, 02:52 PM	#3
Fallout Member Mega Poster Join Date: Jan 2012 Location: Basingstoke Posts: 2,983	Re: Argghh. Brakes! Mate if you're free, come round! We can drink cider and ** around in the garage. The mrs isn't even in, so we can wear her underwear too. __________________ MotoGoLoco - You knows it The Shed** - Suzuki GSX-R 750 K1 \| Triumph Tiger 1050 K6 Fallout Bikes (VLogs, Tutorials, Bike Vids) Fallout Breakbeat (My Music)

18-08-12, 06:10 PM	#5
Fallout Member Mega Poster Join Date: Jan 2012 Location: Basingstoke Posts: 2,983	Re: Argghh. Brakes! She's just scouting your house prior to me burgling it. __________________ MotoGoLoco - You knows it The Shed - Suzuki GSX-R 750 K1 \| Triumph Tiger 1050 K6 Fallout Bikes (VLogs, Tutorials, Bike Vids) Fallout Breakbeat (My Music)

19-08-12, 12:36 PM	#6
Littlepeahead Member Mega Poster Join Date: Feb 2008 Location: The Saaarrrfff Posts: 2,908	Re: Argghh. Brakes! Sell it. Get yourself a nice Curvy SV instead. This one looks good. http://www.ebay.co.uk/itm/2001-Suzuk...item2321413b05 __________________ Tender is the day, The demons go away, Lord I need to find, Someone who can heal my mind...

19-08-12, 07:17 PM	#8
Fallout Member Mega Poster Join Date: Jan 2012 Location: Basingstoke Posts: 2,983	Re: Argghh. Brakes! That LPH needs a good spanking. __________________ MotoGoLoco - You knows it The Shed - Suzuki GSX-R 750 K1 \| Triumph Tiger 1050 K6 Fallout Bikes (VLogs, Tutorials, Bike Vids) Fallout Breakbeat (My Music)

19-08-12, 07:40 PM	#9
Spank86 Guest Posts: n/a	Re: Argghh. Brakes! I'm busy right now but I could probably spare some time in a week or so.

19-08-12, 08:37 PM	#10
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Argghh. Brakes! Grease the lever pivot and examine the pivot bolt for damage, and also the stub end of the lever for wear where it contacts the master cylinder piston. The piston makes a linear movement, however the lever rotates about the pivot bolt meaning the stub makes a wiping movement across the end of the piston, commonly wearing flats on it. As you pull the lever the flats drag across the piston in a notchy manner, not unlike that you're describing. If the damage isn't too great you can effect a fix by carefully reprofiling the lever to a neat smooth curve - don't take too much material off or the lever can become loose at rest. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

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