It was three years ago that we first heard about inventor Benjamin Krempel's PumpTire – it was a prototype bicycle tire that used wheel motion to keep itself inflated. While it was an interesting idea, it would require users to give up their existing tires, plus the peristaltic pumping mechanism would be compromised once the tread wore away. Well, he has now come up what sounds like a better alternative: the PumpTube.
When most of us think of a cycling multi-tool, we picture something that
goes in a jersey pocket or saddle pack. Seoul-based company Leeman,
however, is looking at things a little differently. Its Kickstand Pump
mounts on the bike, and serves not only as a kickstand and pump, but
also a tire lever and tail light.
Tubeless mountain bike tires definitely have their good points, such as
lower weight, less flats and decreased rolling resistance. In order to
seat the things securely on the rim, however, it's often necessary to
use a compressor or a CO2 cartridge to deliver a high-pressure shot of
air. That said, there's now another option, in the form of the Airshot.
When it comes to inflating bike tires on the road, there are two
options: a compact hand pump that requires some exertion, or a
single-use CO2 cartridge. New York-based DesignAir Innovations, however,
has created another one. It's called RideAir, and it's refillable
portable compressed air pump.