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Old 07-23-14 | 03:15 PM
  #35  
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RPK79
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Joined: May 2013
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From: SE MN

Bikes: Fuji Roubaix Pro & Quintana Roo Kilo

Originally Posted by noglider
How is this a valid comparison? A spring holds a Schrader valve closed. Is it even possible to inflate a Schrader tube by mouth?
If your tongue is strong enough to push the valve open, yes.
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