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The life and times of james Hart: his family, his music, life in Luton and his occasional escapes onto the internet.

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Monday, 11 February 2008

Adjusting bicycle cable-fed disc brakes...

One of the first things that needs doing with a new bike - especially one that's not very expensive - is to set up the gears and brakes. I'd played with derailleurs before, so that wasn't too tough (although the cable for the front gear was a little slack, so it simply refused to go into top gear when I first had a go!)

Since this bicycle has disc brakes - both sets of which were rubbing rather noisily on my first run round the block (with a merry "Zing! Zing! Zing!") - I had to turn to the good ol' internet to find out how to adjust them. There are quite a few comprehensive guides to bicycle maintenance, but I thought I'd add a quick entry to the mel´┐Że, not least to remind me.

Now I know how it works, it's quite simple to adjust IS mounted disc brakes:

bicycle disc brake adjustment

Essentially, the two hex-socket bolts are where the braking system is mounted to the frame. These should be tight, and don't adjust.

The upper (green) adjuster, when twisted, changes the angle of the brake system to the central disc. To set this, move to a position where you can see the path of the disc past the brakes, and turn the adjuster one way or the other until the fixed brake-pad is parallel (and hopefully clear!) of the disc.

The lower (red) adjuster, when twisted, (seems to) change/s the distance of the moving part of the brake from the disc. It's almost like a 'centring' adjuster. Fine tune the adjustment of this, while spinning the wheel, until you can hear minimal - or hopefully no - contact between the brake and the disc.

It seemed to work for me, anyway.. it's much quieter, and - of course - this means I'm using less energy. For some reason, I'm still arriving home exhausted, even after a two mile thrash, but I can't blame the brakes any more!

Posted by james at February 11, 2008 10:12 PM


 
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