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HowTo: Build a Parasitic Bike Pump That Steals Air From Car Tires

Green flexible hose with black connectors at both ends.

Aleksi of Instructables has a genius idea. Bike tires out of air? Not a problem. That big old car down the street has some air to spare. Just insert Aleksi's pilfering emergency bike pump into any random car tire (make sure you're out of eyeshot, a look-out may be necessary) and siphon away. 

You Will Need:

  • A 50cm-100cm long air hose
  • Two chucks

Build-your-own.

Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.

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