ยางฮาฟ Challenge EliteTubular มีสี ดำล้วน และ
ขอบแก้ว มีขนาด 700x23c.และ700x25c น้ำหนัก 295 กรัม 220 TPI. จุ๊ปยาว 42 มม. สามารถถอดศรได้
700x23c เติมลมได้ 100-175 PSI
700x2c เติมลมได้ 100- PSI
Features
Tubular - The highest performance tubulars begin with Challenge’s high thread count casings. These are sewn into a carcass with a seamless Latex inner tube inside. This structure is then mounted on tubular rims and inflated. Skilled craftsmen hand-glue natural (non-petroleum based) rubber treads onto the inflated carcass. This process allows the tread to take the shape of the inflated tire, preventing tension between the tread and carcass and retaining ideal flexibility.
The combination of this process with high thread-count casings and Latex tubes results in tires with lower rolling resistance and increased comfort offering a safer and more precise handling of the bike. These tires absorbs irregularities in the road surface with their subtle give and slight deformation, increasing surface contact and guaranteeing both shock absorption and great grip while
cornering.
During this process, tubulars receive base tape, applied over the stitches to protect them from the glue used to attach these tires to tubular rims and some have a PPS (Puncture Protection Strip) between the treads and the casing in order to increase puncture resistance.
Latex - Challenge sources high-grade natural Latex to produce the only seamless Latex inner tube on the market. Due to the lack of seams, these tubes have no bumps or added weight that commonly cause a tire to feel out of round. This also improves the overall strength of the tubes as seams are commonly the weak point on an inner tube.
Latex inner tubes are also very elastic, allowing them to initially wrap around a foreign object, rather than immediately puncturing.
Warning: because of its elasticity, installation of a Latex tube requires the skills of an experienced hand. Latex tubes can be more prone to pinch flats if not installed properly.
Puncture Protection Strip (PPS) - The Puncture Protection Strip is a special aramid fabric placed between a tire’s tread and casing to increase resistance to punctures. Some tires designed for use on rough roads, cobbles and gravel receive PPS2, an additional layer of PPS between the casing and the inner tube.
Specifications
Use: Road Training
Size: 28"
Tire Width: 25mm
Rim Width: 13-15mm
Weight: 295g
TPI: 220
Casing: Poly
Flat protection: PPS
BAR: 7-12
PSI: 100-175
Inner tube: butyl
Founded by Max and Alessandro Brauns and in 2003, Challenge Tyres builds on over 20 years' experience making tyres for the cycling industry. They offer a complete range including track, road, time trial and cyclocross. Their 'cross tyres have been the choice of world champions Erwin Vervecken and Zdenek Štybar thanks to their combination of durability, grip and ride quality.
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