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dual valve stem tires

 tubless tires with emergency tube inside
  (+12)(+12)
(+12) 		  [vote for,
against]

tubeless tires with a vaccuum deflated tube inside attatched to a second valve stem for emergency inflation.
—Ozzy, Nov 30 2006

[link]






       Cool idea.
—nomocrow, Nov 30 2006
   

       I will bun it for the cleverness, however, how would you prevent the innertube from being punctured by the object that originally flattened the tire? I suppose this could work for the type of tire puncture that does not leave a foreign object behind as in the case of backing over one of those spike strips that they use in parking lots to prevent you from backing up at the gate.
—Jscotty, Nov 30 2006
   

       A tubless tire with a tube is still a tire with a tube.
—Chefboyrbored, Nov 30 2006
   

       Yes, if you can ensure that the limp inner tube that has been rattling around in there for 10,000 miles has not rubbed and worn through. [+]
—david_scothern, Dec 01 2006
   

       This is good. The inner tube could be of some material (or of some topology) such that it would cling to the wheel and not contact the tyre until inflated.
—angel, Dec 01 2006
   
      
[annotate]
   


 

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