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Thread: Alex - 2017 S1000RR - Grey/Black

  1. #371
    Forum Moderator alex's Avatar
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    Re: Alex - 2017 S1000RR - Grey/Black

    Fixed :-)

    Next up, warranty replacement of the battery, on charging it this weekend the optimate gave an amber green solid test result meaning the battery is not in the best of health (not the worst either).

    Going to have them test it on Friday and with luck issue a replacement the same day.

    - Alex

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  3. #372
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    Re: Alex - 2017 S1000RR - Grey/Black

    On last Sunday's ride, I started to become aware of a significant brake judder, mainly just as she came to a halt.

    Ergh, me thinks, the disc is buggered and needs a clean...

    Next stop, no its more violent than that...

    Manouvering at a petrol station I can hear grinding.

    Miles from home something is deeply wrong, so I ploughed on and used the back brake more than any rider of an S1000RR in history

    Spot the odd pad out...and the ones very close to joining it. Monies worth had or maybe not, looking into the cooling holes of the discs there seems to be a lot of material build up. Possibly the pads went soft in the rain in Scotland and the wear rate went through the roof.

    These are Performance Friction Compound 95 pads, they are fantastic on track, but they do need heat to bite.

    I'm going to get the dremmel out to clean the discs.


    - Alex

  4. #373
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    Re: Alex - 2017 S1000RR - Grey/Black

    As the pads had to be changed, I had spare slightly worn Brembo SC's and SBS HS870's to choose from so I went to stick in the trusty SC's after a damn good clean of the calipers.

    I was pushing the pistons back in on the last caliper (LHS) when the damn top inside pot got out too far and then skewed through ham fisted-ness. See pic.

    Ok, thought I, place some pressure in the right place and it will pop back into line.

    Nope.

    Got a box, placed the caliper on the box and pressed the piston more firmly.

    Nope.

    Oh feck.

    I have a pot out passed the centre line and immobile. Trust me I was using some leverage and weighting it on the raised side to pop it down.

    I had a quick chat with BMW Battersea and they mentioned emergency support etc could collect it.

    So I had a plan if all else failed. So there was one last thing to try.

    I secured open the pistons which worked (lower pair). Then pumped the brake lever pushing out the only other piston pot.
    The fact that the jammed one was over the half way point meant its pair couldn't fall out. So I pumped it out till it met the skewed one. One last squeeze...

    'Clink' the skewed pot click back inline. All I had to do now was ease both back in...that went fine. But I do think that caliper needs a tear down and clean going forwards.

    What I learnt from this is that the pistons need to travel out passed the centre line to fall out, which means to can pump them all the way out to the centre for cleaning. I had not dared go that far before. But is seems that its pretty safe.

    Just thought those two lessons were worth sharing.

    - Alex

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