Bicycles have both inner and outer tires without exception, the gas exists in the soft inner tube, the outer tire is relatively hard and serves as a protective inner tube.
However, the current car tires and bicycle tires are not the same, they all use tubeless tires.
This is why? Tubeless tires What are the advantages?
Tubeless tires are often called 'low-pressure tires' and 'vacuum tires', divided into radial tires and bias line tires.
Bias and radial tires are pneumatic tires, which are named after the carcass plies, depending on the type of fit.
Inflatable tires are mainly composed of rubber parts and plies.Don't see the appearance of the tire 'whole body' are rubber, but the rubber in the tire carcass only from the components of the carcass, sealing, wearable, anti-puncture and some buffer Role, not really 'contribute' to really 'contribute' is hidden in the rubber inside the curtain.
In order to reduce the force of the cord, one increases the number of plies on the one hand, and on the other hand, the cords in the carcass cross each other at a certain angle.
Because of the adjacent two layers of the cords crossed obliquely intersecting, so people will call this type of tire cords in the form of 'bias tire' .The cords and crown centerline perpendicular to the intersection angle is called 'crown angle' .
On the surface of the globe, there is often a line connecting the north and south poles, which is the meridian.
If the radial tire is exposed through the sidewall cords and its end point is imagined to extend to the axis of the tire, the cord alignment of the tire at this moment is very much like that of a meridian on a globe and the radial tire is therefore The name.
There are many advantages of tubeless tires, generally speaking, the following four major advantages:
One advantage: fuel-efficient
Vacuum tires, especially radial tires, with zero crown angle and strong adhesion, can maintain good driving stability and less friction, which helps to reduce vibration and increase speed.
Belt layer with high positioning, the wheel radial runout small, small resistance, so more fuel-efficient.
Two advantages: safety
Vacuum tire surface is a layer of rubber, inflatable appearance of tension increases, forming a certain pressure on the inner surface, improve the ability to break the self-styled, once punctured, unlike the bike as deflated moment.
Encounter nails and the like, insist on running a vacuum tire one or two hundred kilometers is not a problem.
Three advantages: wear-resistant
Especially radial tire, due to zero crown angle, when the vehicle moves forward when the change is small, and can maintain good driving stability and less friction, is conducive to the absorption of shock and vibration and improve speed.
Four advantages: stable
Tubeless tire tire and wheel rim seal as one of its high precision manufacturing requirements, the majority of die-cast aluminum integrated wheel hub, tire positioning between the high, minimal radial runout of the wheel.
Motorcycles without tube tires are much more comfortable and stable than those with ordinary tires.
