Most bike riders don't carry a pump with them. Most of the time, that's fine. But there might come a time when you need one. This guide will show you how to build a small bike pump that takes up no more room than a self-coiling bike lock.
Push the air chucks onto opposite ends of the hose.
Coil the hose. This will build more air pressure and create a steady stream of air.
Call a friend to use his car, use your own car if it's close, or flag down a car as a last resort. Larger vehicles with bigger tires, like Hummers or F-150's, work best, since you can take more air from a larger tire without making as much of a noticeable difference as with a smaller car.
Keep the hose coiled. Remove the tire valve cap from the car and bike tires. Insert the air chuck into the car tire valve and the other end into the bike tire valve. Uncoil the hose and fill the bike tire with air. Listen for any hissing noises that would indicate a hole in your tire that needs to be patched.
- Always use consenting vehicles. Going out into a parking lot and stealing air is stealing. Be aware of the dangers of flagging down a car.
- Keep the pump on your bike. It weighs next to nothing. It's best to keep the hose with some tire patches and an extra inner tube in case the flat tire is something more serious than wear and tear.