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  2. ISO 5775 - Wikipedia

    en.wikipedia.org/wiki/ISO_5775

    The inner width of the rim on which the tire is mounted should be about 65% of the tire's nominal section width for tires smaller than 30 mm and 55% for those larger. The section height of a tire is usually identical to its section width (for tires less than 28 mm, 2.5 mm have to be added to the width to get the height).

  3. Bicycle frame - Wikipedia

    en.wikipedia.org/wiki/Bicycle_frame

    A steel framed 2002 fully rigid (unsuspended) Trek 800 Sport A frame label of a mangalloy steel bicycle frame. Steel frames are often built using various types of steel alloys including chromoly. They are strong, easy to work, and relatively inexpensive. However, they are denser (and thus generally heavier) than many other structural materials.

  4. Inner tube - Wikipedia

    en.wikipedia.org/wiki/Inner_tube

    Two bicycle inner tubes: A larger mountain bike inner tube and a slimmer race bike tube. An inner tube is an inflatable torus that forms the interior of some pneumatic tires. [1] The tube is inflated through a valve stem and fits inside the tire casing. The inflated inner tube provides structural support and suspension, while the outer tire ...

  5. Bicycle tire - Wikipedia

    en.wikipedia.org/wiki/Bicycle_tire

    For example, if a fat-bike tire is inflated to 0.5 bar (50 kPa; 7.3 psi) gauge pressure at room temperature 20 °C (68 °F) and then the temperature is decreased to −10 °C (14 °F) (a 9% decrease in absolute temperature), the absolute pressure of 1.5 bar (150 kPa; 22 psi) will be decreased by 9% to 1.35 bar (135 kPa; 19.6 psi), which ...

  6. Bicycle and motorcycle geometry - Wikipedia

    en.wikipedia.org/wiki/Bicycle_and_motorcycle...

    a 2006 Tete de Course, designed for road racing, with a head angle that varies from 71.25° to 74°, depending on frame size. Due to front fork suspension, modern mountain bikes —as opposed to road bikes —tend to have slacker head tube angles, generally around 70°, although they can be as low as 62° (depending on frame geometry setting).

  7. Bicycle wheel - Wikipedia

    en.wikipedia.org/wiki/Bicycle_wheel

    24-inch clincher tires (with inner tubes) are the most common wheel size for junior mountain bikes. The typical 24-inch rim has a diameter of 507 millimetres (20.0 in) and an outside tire diameter of about 24 inches (610 mm).