zoom Challenge Strada Bianca Tubular Tyre
Challenge Strada Bianca Tubular Tyre
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|Black / Black||700 x 30c||
10+ In stock, ready for despatch now
|Black / Brown||700 x 30c||
5 In stock, ready for despatch now
The Strada Bianca has a proven Paris-Roubaix tread pattern and lower wearing compound tread. It features 2 x PPS double puncture protection strip. The low rolling resistance of the increased casing volume, achieves a new level of control and comfort.
Top Features of the Challenge Strada Bianca Tubular Tyre
- 700 x 30c
- 30mm Width
- Weight: 390 gr
- TPI: 260
- Casing: SuperPoly
- Challenge 2 x PPS 'Double Puncture Protection System'
- Inner tube: latex
- 55-115 PSI
- Use: Road & Gravel racing/Touring
|Puncture Protection:||Double Puncture Protection Strip|
|Use:||road, gravel racing, touring|
|Wheel Size:||700c (622)|
Challenge 'HANDMADE' production
All tubulars and open tubulars produced by Challenge are special, high-end, handmade products. Handmade production is a process minimizing the use of heat treatments and especially avoiding a very high heat treatment called vulcanization. In order to obtain a good quality standard, the manual skill required in each step is very high.
Our ‘Handmade’ production allows materials to maintain their original suppleness and flexibility achieving the best grip and producing an ultimate performance product. A supple Challenge tire is able to absorb and reduce harmful vibrations passing from the road to the body that are produced by riding harder vulcanized tires on stiff carbon bikes ultimately causing muscle stiffness, inflammation and fatigue.
Our very top casings are made of Silk or top quality cotton weave called Corespun, the next level down being SuperPoly. Corespun weave allows us to obtain both supple and strong, but lighter casings at the same time. These very top level casings can reach a TPI (thread per inch) count of over 320TPI. At the next SuperPoly level the TPI count can easily reach over 300TPI achieving also very strong and in fact less delicate casings than the higher cotton level.
The casings, which are sewn round with an inner tube inside, are mounted on rims and then inflated and the treads are then slowly hand glued on them. The tread is laid on the inflated casing enabling it not to suffer any tension, instead of being placed on casings which are subsequently inflated. The treads made of all natural (non-petroleum based) rubber, combined (via Handmade production) with the quality, high TPI count casings result in tires with lower rolling resistance and increased comfort offering a safer and more precise handling of the bike. The tyre absorbs irregularities of the surface with its subtle give and slight deformation, increasing road surface contact and guaranteeing both shock absorption and great grip while cornering.
Additionally, a special fabric (PPS-Puncture Protection System) is placed between the tread and the casing in order to increase puncture resistance. The casing is then sewn around an inner tube (that’s why they were originally called ‘sew-ups’) and now takes the form of a ‘tubular’ tyre with inner tube. Base tape is applied over the sewing and then this tubular tyre is glued onto a special tubular rim.
About Road Race Tubular Tyres
These tubular tyres are designed for tubular rims, these are glued on using tubular cement or tubular tape. They are the preferred choice for serious riders and professionals when all that matters is performance. A tubular is a sealed unit with an inner tube sewn into the tyres casing, this means the tubular is perfectly round in profile and offers a better feel when cornering. Vittoria have introduced open tubulars which are the same design as their tubular tyres but with a bead for use on a clincher rim, these will offer the closest feel of a tubular but the ease of repair associated with a clincher. Sizing is subtly different to clincher wheels and can be a bit confusing as most manufacturers still quote the old imperial sizes. However there are only 2 real sizes: 26" is the same as 650c, then 27", 28" and 700c are all the same size. We spotted this useful article on Bike Radar which explains briefly the benefits and how to fit tubular tyres.
About the Challenge brand
In 2003 Challengetech created its own brand “Challenge”. Challenge, as the word says, wants to point out how difficult and exciting it is to keep the tradition of high quality products, created with obstinacy, with the steady research of special materials and through handcrafted processes. Since the 2000s, Challengetech has being producing tubulars for other brands, thanks to the constant use of these products in the professional cycling.
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