Tubolight says their Diamana isn’t just the quickest & lightest mountain motorcycle tire liner available on the market – however additionally they declare it’s “the winningest tire insert [on the] Global Cup, and the one one successful in each downhill and cross-country“. Its secret although is NOT simply its gentle weight or some distinctive subject material. Tubolight says that it’s the particular shaping in their Diamana liner that manipulates the waft of air molecules INSIDE your tire to higher keep watch over native tire compression & rebound as you roll over tough terrain.
Tubolight Diamana is the quickest, maximum complex MTB tire liner
I’m at all times a little bit skeptical of a product we’ve now not heard a lot of, claiming to be the quickest and winningest. However but even so sealant itself, tire liners are the least outwardly visual part on a race motorcycle. (To be honest we did listen about, however now not bodily see them on Thibaut Daprela’s Commencal Excellent DH V5 downhill race motorcycle remaining summer time in Leogang.)
So we’ll simply take Tubolight’s phrase for it at the wins if most effective according to the rainbow jersey footage of 2021 XC Global Champ Evie Richards, 2021 Olympic Gold medalist Jolanda Neff, and 2021 DH Global Champ Myriam Nicole on their homepage. To not point out 2021 XC Global Cup #1 Mathias Flückiger and 2022 DH Global Cup #1 Amaury Pierron. The ones 5 riders on my own have it sounds as if racked up a slew of wins on Tubolight tire liners in addition to a number of different riders on 5 cast MTB groups. There’s additionally the curious sponsorship of professional conti street crew Q36.5, since Tubolight’s most sensible Diamana tech isn’t but to be had in street tire sizes.
So, everyone knows about MTB tire liners. What makes a Tubolight Diamana liner other?
What occurs inside of a mountain motorcycle tire whilst you hit a drawback?
Many mountain bikers are on board with the concept tire liners could make you quicker in the end. You get advanced low-pressure grip & decrease rolling-resistance with out dropping time trailside solving residences. However Italian tire liner maker Tubolight has a extra nuanced tackle how tire liners could make you quicker…
When your mountain motorcycle tire hits a drawback, the tire deforms on the web site of affect. That in the community will increase the air stress within the tire, which in flip briefly rebounds, bouncing the tire again out towards the purpose of affect. This will ceaselessly occur sooner than the motorcycle’s suspension may also begin to react.
Decrease tire pressures and supple tire casings can prolong that rapid rebound. However there’s most effective so low or supple you’ll be able to move with out sacrificing steadiness, keep watch over, or sturdiness – even with most normal tire liners, which can be already a large growth.
How does the Diamana answer paintings? And why?
The Tubolight Diamana objectives to really create 2 layers of air stress throughout the tire quantity and to keep watch over the rate at which air flows from one to the opposite. This creates a twin advantage of slowing native tire rebound with decrease outer stress close to the web site of affect and spreading the power additional across the rim for higher affect coverage with a better stress zone subsequent to the rim.
From the aspect, the blue Tubolight Diamana doesn’t glance the rest like different liners. Its undulating form rises and falls in waves across the wheel, leaving gaps of house above the rim. From an attitude, you’ll be able to see the original scooped nature of the Diamana liner, with dimpled ‘superstar’ shapes stacked on most sensible of one another.
Tubolight claims that once an affect hits the tire from the outdoor, those scoops direct airflow into the rim mattress beneath the lining by way of the ones lateral channel openings. Their form takes good thing about the Venturi impact to hurry up and compress the air because it strikes beneath the lining. The dimples additionally declare the similar boundary separation theory we see on golfing balls and Zipp wheels, so extra air is going into the lateral channel openings, and does now not replicate again into the principle tire quantity.
That implies air flows into the rim smartly quicker than it could actually break out, delaying the quick rebound impact that differently makes the tire jump off a drawback.
Tubolight’s claimed effects?
The plain result’s the native air stress within the tire does now not build up just about as a lot on the web site of an affect, so there’s a a lot slower native rebound or jump.
That implies the deformed tire will proceed to stick hooked up to the abnormal floor floor for advanced grip and keep watch over. Tubolight claims a “huge 60%” build up of constant stress towards the bottom for next-level traction. The slower rebound additionally claims 55% upper vibration damping, resulting in lowered rider fatigue and a smoother experience.
They in the long run say Third-party checking out confirms as much as a 9% rolling-resistance aid over tough surfaces.
Tech main points
Tubolight Diamana liners are made from high-density closed-cell EVA foam – assured 100% absorption-free to paintings with any sealant. Relative to different liners, further foam hardness for the Diamana liners is vital to verify they preserve their distinctive form for optimized air motion throughout the tire, and to ship “years” of dependable efficiency. This “results in the longest-lasting tire insert ever made” consistent with Tubolight, “even after lengthy runflat rides“.
Those distinctive Diamana liners are to be had in 3 other variations, with other thicknesses & densities to fit mountain motorcycle driving from XC to DH. Their distinctive form additionally guarantees they are able to be used with any tubeless valves.
Tubolight Diamana tire liners – Pricing, choices & availability
Diamana SL is the softest, thinnest & lightest for cross-country racing – at a claimed 97g according to tire in 29″ most effective.
The thicker, medium-hardness Diamana HD is essentially the most common all-rounder tire liner at 145g in 29″ most effective, supposed for rear downcountry, or entrance path, enduro & DH tires.
Finally, Diamana XHD options the thickest liner with the toughest EVA compound, particularly for use with bolstered casing tires. XHD is available in each 27.5″ (205g) and 29″ (220g) sizes to fit hard-charging enduro & DH race motorcycles, in addition to heavier eMTBs.
Tubolight Diamana tire liners are offered direct from Tubolight, to be had for 100€ solely in pairs. In this day and age, most effective the 29″ SL+SL, SL+HD & HD+HD pairs are in inventory. XHD liners aren’t lately to be had.