CARNE AND QUESO

HOW TO 
Make An Automatic Bicycle Pump 

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




Automatic bicycle pump



STEP 1.  
You need a 50cm-100cm long air hose and two chucks. Make sure the hose fits very tightly on the chucks.

Materials

STEP 2. 
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.

Assembly

STEP 3.
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.

(from http://www.instructables.com/id/Automatic-bicycle-pump)

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