Emergency Bike Pump Lets You Fill Bike Tires From Car Tires
11-15-10, 08:42 PM
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Except for the pressure problem, it's a great idea. We all know how difficult it is to blow up a bicycle tire using an actual pump.
11-15-10, 09:06 PM
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Thaaaaaat's GENIOUS! As long as the driver of the car doesn't show up while you're nabbing his air.
Typical car tires are at ~30-35 pounds, which is fine pressure for a desperate MTB or townie bike tire. Road bikes might need to find a nice big cargo truck of some sort- you might get 50-60 pounds out of them.
Two non-locking air chucks might be a better setup- you wouldn't need to flip/lock the two levers, and attaching/detaching your 'pump' in a hurry would be a non-issue. You'd just need some good hand strength.
Typical car tires are at ~30-35 pounds, which is fine pressure for a desperate MTB or townie bike tire. Road bikes might need to find a nice big cargo truck of some sort- you might get 50-60 pounds out of them.
Two non-locking air chucks might be a better setup- you wouldn't need to flip/lock the two levers, and attaching/detaching your 'pump' in a hurry would be a non-issue. You'd just need some good hand strength.
11-15-10, 09:22 PM
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11-15-10, 10:06 PM
#7
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The above idea is a waste of pannier space.
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11-16-10, 07:45 AM
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Not hardly... most car tires run about 32 PSI, but due to the volume of the car tire, hold quite a bit more air. Bike tires on the other hand may range from 35 PSI to 120 PSI, depending on the type of tire and tube. My beach bike with fat tires holds 35 PSI, my commuter holds 85 PSI, and my road bike 120 PSI; all the tires on all my bikes probably don't equal the volume of one of my truck tires.
Commercial or heavy duty truck tires do run at higher pressures.
Commercial or heavy duty truck tires do run at higher pressures.
11-16-10, 08:05 AM
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Truck tires usually run at 100psi.
Doesn't matter how much air is in a car tire, you're not getting more pressure then what's in there. I second the road morph, I use the turbo morph which has a fold out dial guage for easier reading.
Doesn't matter how much air is in a car tire, you're not getting more pressure then what's in there. I second the road morph, I use the turbo morph which has a fold out dial guage for easier reading.
11-16-10, 08:55 AM
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11-16-10, 11:43 AM
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So the idea is to take air from someone else's tire assuming that the tire available would have enough pressure (almost certainly not true).
One problem is that generally when I have a flat, I am out where there are no trucks or cars parked nearby. So I just carry a hand pump and pump up my tire.
One problem is that generally when I have a flat, I am out where there are no trucks or cars parked nearby. So I just carry a hand pump and pump up my tire.
11-16-10, 12:08 PM
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It's bigger than two CO2 cartridges and the nozzle. Useless. Might cost less, but I'll tell you what does cost a lot: The beat down you get when someone catches you nabbing their air.
Spend $15, buy the CO2 system. Or spend $30 and get a usable frame pump.
Spend $15, buy the CO2 system. Or spend $30 and get a usable frame pump.
11-16-10, 12:23 PM
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Seems like it would be illegal somehow. Stealing air? Hm..... Is that theft or vandalism?
11-16-10, 12:59 PM
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11-16-10, 01:07 PM
#16
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No, the air is going to flow from your bike tire into the car tire.
Useless unless you ride MTB off road, where you're not going to find a car handy , anyway.
Useless unless you ride MTB off road, where you're not going to find a car handy , anyway.
11-16-10, 01:17 PM
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11-16-10, 02:16 PM
#18
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