Hutchinson Bulldog MRC Hi UST
square agressive & high knobs bite the ground to provide traction and braking performance
- optimized knobs design on central tread to associate low rolling resistance & mud clearing
- flat tire shape to increase cornering grip at any time on any trails
- synthetic rubber compound (SBR) increases mileage & performance
Tubeless Tyres
Tubeless tyres were originally developed by French Companies, Mavic, Michelin and Hutchinson in an attempt to eliminate pinch punctures and decrease rolling resistance. Given the name UST, Universal System Tubeless, most major wheel and tyre manufacturers now produce tubeless compatible parts.
Tubeless tyres do almost eliminate pinch punctures as there is no tube to pinch between the tyre and rim. Rolling resistance is also reduced as there is no friction between tyre and tube. As with standard tyres, weights vary from model to model. Depending on tread design, lighter weight tyres will be faster but may offer less thorn pucture protection. When comparing to normal tyres tubeless offer a similar level of thorn puncture protection, i.e. a 650g tubeless tyre would offer a similar protection level to a 500g standard tyre with a 150g tube (thorn puncture protection is related to tyre construction and material thickness).
To use UST tyres you need a tubeless compatible rim. This differs from a normal rim as it is airtight and has an inside shoulder to hold the tyre bead against the rim wall. Rims are either solid aluminium with the spoke attaches from the hub side, or more standard aluminium rims with spoke holes and an airtight plastic sealing strip.
Punctured tubeless tyres can be easily fixed with one of many available tubeless patch systems. Punctures on the trail are easily remedied by removing the rim valve and putting a spare tube in. An effective way to eliminate thorn punctures is to run tyre sealant within the tubeless tyre, a small amount of sealant will make an almost puncture proof system! Commercial bike sealants are becoming available or a diluted liquid latex solution will work fine (dilute enough not to set in the tyre, but concentrated enough to seal any holes).
|
|
