02-22-2013, 07:12 PM
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#715
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Gnarly Adventurer
Joined: Oct 2012
Location: Middle Tennessee
Oddometer: 223
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For real!  This looks like it'll work while riding. Explanation with a live demo at the end. 
http://www.youtube.com/watch?feature...=KjAnMu218l0#!
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- marc
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