Automatic Bicycle Pump





Introduction: Automatic Bicycle Pump

Fill your bicycle wheels with conveniently available pressurized air stored in automobiles.

Step 1: Materials

You need a 50cm-100cm long air hose and two chucks. Make sure the hose fits very tightly on the chucks.

Step 2: Assembly

Push the hose onto the chucks. It should be a very tight fit. If it is too tight you can soften the hose by heating it in warm water.

Step 3: Steal Some Air!

Take your bike and go find a hummer (or some other overweight vehicle). Fold the hose in your hand so you don't waste any precious energy. Attach one end to the automobile tyre and the other to your bike. When you unfold the hose you can hear a hiss. That is the sound of air flowing to your bike wheel and the world becoming a better place :) Fold the hose again before you detach it from both vehicles.

Remember! Thou shalt not steal air from public transportation. Public transportation is good.



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    yeh. I came up with this in 1967. Same year I invented mag-lev & rail guns. Before I was drenched in insecticide by a crop duster, and I became every other "salt 'o the' urth" american patsy...

    Out of air.. OH! There is a scrapped car there with still inflated tires... "Hiss" There we go. :)

    This works well, because it gives you just enough air to cruise on home.

    we should only steal from gas-guzzlers

    It would really put an elderly person in a predicament if you "used" their tire's air for your bike tire and stranded them, needing assistance to change their tire! If you ever come back to your vehicle and discover you have two very deflated tires, ( hopefully on the same side! ), you'll know that your instructable was remembered by someone who needed air in both bike tires. What goes around...comes around.

    hell yeah! I'm lovin' this. So simple. I can't believe I didn't think of this or seen this before.

    Yes, except for the fact that this doesn't work!

    As many have said in this comment section, this will only further deflate your tires, or inflate them to a low point. Believe it or not, bicycle tires require a higher pressure than do car and even truck tires.
    Someone made a remark about it being "common sense" that an automobile have a higher tire pressure, but this is solely based on assumption. And we all know what happens when you assume...

    It's a great concept, but there's no way to practically apply this. The pressure source being suggested in this Instructable is simply inadequate.

    I agree, my bike tires (27") require 100 lb of pressure.

    What you can do is pile weight on the car first thus increasing the pressure. Just looking at my jeep it has, say, at least 80 in^2 of tire in contact with the ground. Of course, the tires will flatten out even more as you add weight and/or suck out air, but let's say to get from 40 psi to 110psi you only need to pile 5,600 pounds on top of the vehicle for an adequate pressure increase. So with a good supply of bricks and rocks you should be in business.