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What Is Rim Grinding?


bullitt

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Angle grinder with Grinding or Cutting disk on.

Wack your wheel from your frame, go around with it spinning at an angle, leaving a slight indentation. Loads of lines and grooves.

Pads grip to them = improved braking in wet and generally a better brake.

:)

And if you want that in english, it translates to be....

Run around the side wall of your rim with an angle grinder. This will roughen the side wall causing there to be more friction with the brake pads, in turn giving better braking.

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just afew quick extras

there are different types of grind - light and heavy

some pads work better with light grinds some better with heavy, equaly some suck with a light grind and some wear down so quick with a heavy grind they only las 1-2 rides, the pic of the rim above is a heavy grind

also before you butcher your rim you need to consider grind direction ie, the lines "drawn" buy the cutting/grinding disk should apose the braking action - check the pic (Y)

grind.jpg

best to get someone who has some experience to do it for you the first time

hope that helps

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A-ha, yeah. What he's done in knurled the rim surface.

dx32_machined.jpg

Similar to the above. You can machine the knurling onto it, if you or someone you know is good enough. I don't really know how long they last, although that looks fairly deep/well done, so it might last longer than a grind. Bet it *eats* pads though...

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