Future Tech
World's first smart bike tube shows you tyre pressure on your phone
A new innovation for mountain bikes promises to make it much easier to get the optimal tyre pressure, allowing for the right grip and less rolling resistance.
Austrian manufacturer Tubolito says its new, smart and lightweight inner tube is the world's first that can determine the air pressure inside your tyres to a tenth of a bar and send it to a phone.
To see the current pressure, bikers just have to hold their smartphone up to the wheel at valve height.
The tube is called the Tubo-MTB Psens and a small and flat pressure sensor is attached to the valve stem on the inside, along with an NFC chip that sends information to your smartphone that you can read in an app (Android/iOS). Here you can read pressure in bar and psi.
The sensor doesn't need a battery. When the pressure is measured, the sensor gets power that was given to the NFC chip through induction from the smartphone.
The sensor weighs only about 8 grams. In total, the tube made of thermoplastic polyurethane (PU) weighs no more than 90 grams (27.5 inches) or 93 grams (29 inches).
The smart tube is not cheap, however, and a Tubo-MTB Psens costs 45euros to order from Austria, where it's made.
Light PU inner tubes are Tubolito's core business. Mountain bikers, but also road cyclists, save quite a bit of weight with a PU tube compared to ordinary butyl rubber tubes. The latter weigh around 200 to 220 grams in 29-inch size.
In addition to Tubolito, Schwalbe (Aerothan) or Revoloop also offer PU inner tubes, which are priced at 25-30euros without a sensor. In the event of a puncture, PU tubes can be repaired with special, self-adhesive patches.
- dpa
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