A Valve Cap Worth Stealing
Mountain bikers are a needy bunch huh? Trekking thru road passes most of us wouldn’t dare attempt, these outdoorsmen really need to pack light. They can’t be bothered with things like - a tire pressure gauge. So John Wrighton went and developed the Digital Valve Cap - a cap with a digital readout of the current tire pressure. It’s powered by a small cell battery and activated when you press the cap.
Every bike I have ever owned are missing their caps. They either fall off or some paranormal phenomenon is taking them. Either way I don’t see high tech caps staying where they’re supposed to for very long. Thieves!
Designer: John Wrightson

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Ok, wait. See, on a mountain-bike, everything below the suspension is called “unsprung weight” and is considered to be an incarnation of satan. It is the cruelly necessary inertial shadow that throws the rider’s white, shining talent into harsher relief.
Taking a tiny bag weight and turning it into unsprung weight is the dumbest thing I’ve ever heard.
Good point about unsprung weight. Maybe this is being marketed wrong. Why not just keep one in your bag to pull out when you want to check pressure. It is smaller than most other guages.
then John Wrightson should create security lock to secure his valve cap