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Old 01-11-14 | 09:03 PM
  #10  
Tourist in MSN
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From: Madison, WI

Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.

Originally Posted by Bandera

Sandpaper? In the plethora of bicycle maintenance mis-information that ranks right up there with carrying spare pedals on tour......

-Bandera
Disagree.

The dark gray dust on everything around the rim is Aluminum Oxide. And Aluminum Oxide becomes a heavy layer on your brake pads. Aluminum Oxide is much harder material than the Aluminum alloy in the rims, in fact Aluminum Oxide is used in grinding wheels and cutting tools to cut steel.

Rims cost more than brake pads. I would rather periodically remove the Aluminum Oxide from my brake pads than replace my rims.
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