Between runs

Jan 11, 2013
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I came across a post from derby freak that was cool. It had to do with cleaning off tread after each run down the track, maybe it was every few runs. I wanted to ask what others are doing? Is there a census on cleaning wheel tread? I ask because our race is next week and I have the flexibility to do so while racing if it would be worth it.
 
I just wipe the wheels with my finger to make sure there's nothing on them. No solvents or abrasives or anything.