Since its first introduction, Tubolight proved to be the winningest tire insert and the only one winning in all disciplines.
We tested many different solutions, looking for the best combination between flat protection, speed, shock absorbtion, stability and weight.
This is the reason why each version has its own shape and compound.
We all know, the two main reasons why tire inserts exist are to the protect from pinch flats and improve ride quality. With the new Tubolight, a new standard is reached.
Studying how pinch flats occur and how tire inserts interact with the tire and the rim, we moved material right where it needs to be, over and outside of the rim bead.
The portion over the rim bead is increased by 30% to 60% depending on rim width, and together with an harder compound, rim hits are drastically reduced.
The super tight fitting is retained, because that’s an incredible bonus for added lateral stability and avoid tire burp
The air channel between insert and rim acts like a valve.
During a shock, part of air molecules inside the tire move from the outer portion of the insert into the channel, causing a difference in pressure. As the insert is very tight on the rim, those molecules gets trapped and take a fraction of time longer to re-establish even pressure between the outer and inner portion.
That means, in the real world, rolling resistance and tire rebound are reduced.
These two features combined give what every rider is looking for: EFFICIENCY.
Downsides? Yes, there are two minor downsides: wether using mousse-specific or standard valves, air release is slightly slower due to the pressure difference between the two portions of the air volume.
At first installation, we suggest not to put sealant from the valve.
Unfair advantage. This were the words of our pro riders.
We are very proud to introduce Diamana, the most advanced tire insert ever created.
For the first time in the history of cycling, there’s a study on how air molecules move inside the tire during casing deformation.
How does it work?
Taking a look at how the tire compresses and rebounds during a shock, we can see how the entire process is so fast that the tire casing gets back to its original shape even before suspensions start compressing, creating inconstant tire pressure on the ground which equals to poor traction.
This is amplified by high inflation pressure, can at the same time be mitigated by lowering tire inflation, and it’s actually the reason why a lower inflated tire offers more traction.
What we created is a solution to cut this rebound out and leave the tire at constant pressure on the ground.
The lateral channels are shaped to create a Venturi effect, meaning that air flow through the channels increases speed as channels gets smaller. This is the same principle of Formula 1 cars ground effect, and is required to speed up air from the outer portion of the insert to the inner portion, between the insert and the rim bed.
Air gets trapped into the inner portion and takes much longer to get back to the outer one, leaving the entire shock moment with very low air on the shock spot.
Tubolight is the winningest tire insert in world cup, and the only one winning in both downhill and cross-country.