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Three most common manufacturers are Campagnolo, FSA and Cane Creek. Head tubes with this standard have a 42.0 mm inner diameter. Cane Creek Standard: 36/45. Very common on mountain bike frames and a fair number of road frames. Most frames made by Giant that have integrated head-tubes use this standard (which amounts to a lot of bicycles).
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). [3]
A bicycle head tube with a partially installed bicycle headset; the locknut has yet to be fitted onto the fork steerer tube. The head tube is the part of a cycle's tubular frame within which the front fork steerer tube is mounted. [1] On a motorcycle, the "head tube" is normally called the steering head. On bicycles the manufacturer's brand ...
These angles are measured from the horizontal, and drastically affect the rider position and performance characteristics of the bicycle. Mountain bike geometry will often feature a seat tube angle around 73 degrees, with a head tube angle of anywhere from 60 to 73 degrees. The intended application of the bike affects its geometry very heavily.
In the diamond frame, the main "triangle" is not actually a triangle because it consists of four tubes: the head tube, top tube, down tube and seat tube. The rear triangle consists of the seat tube joined by paired chain stays and seat stays. The head tube contains the headset, the interface with the fork. The top tube connects the head tube to ...
Down tube: tube on the bicycle frame that runs from the head tube to the bottom bracket Dropout : a bicycle rear fork end that allows the rear wheel to be removed without first derailing the chain. The term dropout is often incorrectly used to refer to any fork end , but not all fork ends are dropouts
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Some newer (2014/5) downhill bikes can be built to weigh under 30 lb (13.6 kg), such as the Trek Session 9.9 or Kona Supreme Operator. Dual crown e-bikes typically weigh 25–35 kg (55–77 lb). Adjustable head tube angles are also available to adapt the bike to the owner's preferred style of riding. [3]