Hey chaps,

Two weeks ago I was riding down a monster mountain, bike fully loaded with girlfriend on the back. I was using my back brake... a lot.
As i neared the bottom the brake pedal became flimsy and there was absolutely no bite whatsoever and no resistance in the pedal - felt like the spring had been removed. Rather scary, but luckily the front saved the day.
Once they've cooled (30 minutes) they're fine and back to working order

I assumed the pads/ disc overheated and maybe lost its bite because of dirt. I took the calliper off, pads out, inspected, thorough clean and reassembled.

Two weeks on and i'm riding down an even steeper mountain, back brake does it again. 20 minutes to cool off and they work.

I've never experienced this before, complete loss of the brakes due to overheating - if that's what it is.

Can anyone shed any light on this for me please, would be greatly appreciated!

Thanks,

Andy

Basically,as you have said your brake is over heating..

Might be an idea to consider feathering your brakes..using front too.

I would consider changing the fluid too.

Curious as to where your riding?.

Severe use of small disc , small caliper and small fluid reservoir generally results in the fluid being boiled for want of a better description.
Not much you can do about it. I'd definitely change the fluid if I'd had the brakes reach that stage.
Used to tear round on an XR650R SM with the standard front brake which usually ended with an excursion into the boonies, changed to a 320mm rotor, larger caliper and suitable master cylinder and was able to stop when I wanted to.

Thanks chaps!

Okay, so nothing serious, but a brake fluid change is due then.

Was riding in Turkey. Although, just crossed the border into Georgia yesterday!

Appreciate the advice.

Andy

I was thinking 'where the feck are there mountains in Slough'?

Multi storey car parks are pretty steep in Slough.