However what’s inside these clinchers has been altering of late with TPU internal tubes flooding the market. Fabricated from feather-light plastic (or thermoplastic polyurethane to be actual), TPU tubes are a fraction of the dimensions and weight of standard butyl tubes and have a decrease rolling resistance. These tubes are, nevertheless, spendier than the butyl commonplace and include their very own set of issues.
“Prior to now, TPU tubes have generally shredded themselves when using on tough gravel. And plenty of TPU tubes suffered from mysterious leaks,” Jan Heine of tire model Rene Herse says.
“The valve stems of most TPU tubes are made out of plastic, they usually deform when the (steel) valve core is screwed in. Then the tube leaks, not as a result of the fabric is porous, however as a result of the valve doesn’t seal.”
Rene Herse has got down to remedy this leaking drawback with the discharge of its personal TPU tubes, which function patented all-metal valves. These valves will not deform when the steel valve core is screwed in as their plastic predecessors did and declare to carry air for weeks at a time earlier than needing a prime up.
(Picture credit score: Rene Herse Cycles)
Made in Germany, the Rene Herse TPU tubes are made out of a barely thicker materials than generally seen on these ultralight tubes, which the model says makes for simpler set up and improves puncture and pinch flat prevention, even on uneven, rocky terrain.
The Rene Herse tubes weigh in at simply 32 grams (for tires as much as 32 mm), which is similar to different TPU tubes with plastic valves, and are available in 700c and 650b model with a wide range of and widths ranging between 30-68mm, together with a alternative of fifty or 70mm valves.
The most recent race content material, interviews, options, evaluations and knowledgeable shopping for guides, direct to your inbox!
“The brand new Rene Herse TPU tubes have been examined for hundreds of miles on tough gravel roads and mountain bike trails earlier than they had been signed off for manufacturing,” the model assures.
Out there beginning mid-April, the TPU tubes will retail for $30 instantly from renehersecycles.com and chosen retailers.
