Often the riders asked me the inner tube specifications in the store, try a brief, convenient to riders, but also as the new clerk training materials for the rider in the future.
A bicycle inner tube size specifications
Size specifications to cope with the tire, the tire's sidewall to indicate the size, such as 26 × 1.95 (26 means with the wheel diameter, are generally 26-inch mountain bike, children use the mountain bike 24 inch, 1.95 refers to the section width) 700 × 23c ", according to tire size to select the inner tube.
General inner tube the size of a suitable range, for example, 26 × 1.95 ~ 2.1 of the inner tube, the description of the inner tube can be used in conjunction with 26-inch width of tire in the range of 1.95 to 2.1

2, the bicycle inner tube gas nozzle types and sizes
The gas nozzle with the rims to choose, and the gas nozzle holes on the rim determines the size of your American mouth or French mouth, the thickness of the rim determines the choice of the length of the gas nozzle, we are talking about the rims need to use the extended gas The mouth of the inner tube.
Common type of gas nozzle English mouth, American mouth, French mouth.
Our original daily riding 26-inch, 28 inch car English mouth (E / V), the valve core hose's, I was a kid used to do the slingshot elastic material, mostly English mouth the valve inside the hose to do :) because the hose is relatively easy to aging, resulting in poor air-tightness, and require frequent replacement, sports bicycles rarely used English mouth.

French mouth (F / V) is a high pressure when the air tightness best road tires in several inner tubes require high pressure, so most of the French mouth. French mouth very small hole on the rim is also very small, the strength of the rim road vehicle use French mouth, may also be this. But also more fragile, and I cheer not accidentally break a few.

We see the motorcycle inner tubes are basically American Mouth (A / V), American mouth, also commonly known as motor mouth. The air tightness of the American mouth better cheer than the French mouth a lot easier, so use the most common mountain bike mostly American mouth, many low-end road bikes to configure the American mouth. American mouth to cheer in the country at present is very convenient, the vast majority of portable pump can play American mouth, outside the vehicle stalls and motorcycle maintenance at all OK to cheer, the most suitable for electric bicycle travel outing.

Gas nozzle length

The length of the standard American mouth is 2.8cm, the length of the French mouth is 3.2mm, (the above figures in mind is not clear, go back to look if there is a mistake again modified) we choose the right length according to the thickness of the rim gas nozzle, gas nozzle protruding from the rim to some length to facilitate cheer can

3, the bicycle inner tube thickness
Different thickness of the inner tube suitable for different situations, Kenda, for example, when the inner tube of the average thickness 0.87 mm, on this basis 0.73,0.6,0.45 mm thickness of lightweight inner tubes, have 1.2,2.25,4.3 mm thickness to strengthen the type of inner tube
The lightweight inner tubes for bicycle speed athletics, lightweight inner tubes can reduce the weight of the wheel rotates. Because the thickness to reduce the strength requirements, so the price more expensive than the average thickness of the inner tube.
Reinforced inner tubes for high intensity use, such as high-intensity XC, DH, BMX, thin outer extra-thick inner tube 4.3mm thick, very thick and heavy, looking very confident to not puncture, sea master was a look said, is simply a tire. The rider has sales, purchase must be extremely tired riders to fill tires, shopping for bicycle travel.
Riding in general, we use the ordinary thickness or slightly thicker inner tube can be a lot of riders do not know think your must get to know the durability, optional lightweight inner tube is not right do travel purposes.

4, bicycle inner tube material
Common for natural rubber and butyl rubber, butyl rubber temperature resistance and slow down the aging process than natural rubber, long service life. , Airtight resistance or a lot of high-grade the tubeless basic use of butyl rubber as a material. General repair stand sits a few dollars are natural rubber inner tubes, in rider sales are butyl rubber inner tube.

Bicycle inner tube trap liquid (also called leakproof)
Tube trap fluid can buy back their own perfusion, can also be purchased already to perfusion good trap liquid inner tube. Have a riders rider to buy a trap liquid inner tube, just ride away for a while Tuizhao Che back, bar tires, accusing the sea master how to trap the liquid inner tube to tie the tire also leak. In fact, the inner tube trap liquid only repair small holes, while enhancing the air tightness of the inner tube, there is no way for the larger bar tire.

6, bicycle inner tube brand
Bicycle inner tube brand is also the tire and mountain bike tire brands, domestic riders, most of them are using the Kenda / Kenda and Cheng Shin / CST (Maxxis / of MAXXIS), a small part of Chaoyang and other domestic brands Forum, also small part of Michelin, Europe and the United States inner tube. Kenda and Cheng Shin so welcomed by domestic riders, may be high and their inner tubes cost-effective.