Rusty Brake Disk

[Neil.M]

Hi Guys

Quick one on Rust, I ride my 06 1200GS on a daily basis commuting into London every day. I noticed that the Back Brake disk has started to show signs of rust. The bike does sit outside overnight but I am still surprised that the contact area of the disk would do this considering the dual braking system and daily use.

Has anyone had the same issue and if so what can I do about it?

Thanks

 

[Slowdown]

Have you taken the rear caliper off and made sure the sliding pins are free?

I'm sure there's a 'HOWTO' somewhere on this.

[EDIT]
Here's the 1150 one from HoW on ADVRider. I'm pretty sure the advice about the guide pins is the same though. But I'm not 100% as I've never had an 1100/1150.

http://advwisdom.hogranch.com/Wisdom/BFDRear2.1.1.pdf

Page 18/19 seem to describe it....

 

[snerkler]

I'm assuming you mean 'proper' rust, not the surface rust on the contact area you get on any disc if it got wet, that soon scrubs off as soon as you use the brake?

 

[Deleted account 211025001]

I never had this with my OE WMB disc but now have an EBC unit and have the same when it's been ridden through this winters sh1tty, salty condiditons.

It can take a while to go depending on the type of riding done; eg a days town riding will not remove it but go out for a thrash and it goes.
I put this down to the linked brakes (I never use the foot brake). I reckon at slow speeds, with soft, gradual braking the rear brake is hardly, if at all, activated. Where as at speed, with heavy braking, it gets a lot of use

What ever, I don't see it as an issue

Andres

PS Prob worth checking your caliper slides and works properly, as suggested, just in case.

 

[thornley]

Heat at the disc suface causes the stainless steel to lose its solution annealed condition and you start to get surface pitting (rusting) at the grain boundaries of the material. Tends to happen more with bikes used in heavy stop start environments (traffic) where regular heat build up and salts create the worst possible circumstances. Disc surface temperatures on modern bikes can easily exceed 900 centigrade. Fits what you are doing?

Very important if you are putting a bike away for any length of time (more than a couple of days) to ensure the pads are free and not in contact with the disc and the discs/pads are dry and salt free.Turn the wheels on a regular basis to prevent localised pitting. Given sufficient time you could end up with seriously deep pits on the disc turning it into a grinding disc for your pads!

 

[RTDAVE]

My 2010 R1200RT is having the two front discs replaced under warrany due to rust,not only on the braking area,but all over.The back one is unaffected.I'm told there are 3 others also claiming-this is just from one dealer.I noticed the rust after the bike was 6 weeks old(1,000 miles).
Also check: http://www.telegraph.co.uk/finance/...thousands-of-motorcycles-for-brake-check.html