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The fork offset is the perpendicular distance from the steering axis to the center of the front wheel. In bicycles, fork offset is also called fork rake. Road racing bicycle forks have an offset of 40–50 mm (1.6–2.0 in). [7]
Road racing bicycle forks have an offset of 40–55 mm. [2] For touring bicycles and other designs, the frame's head angle and wheel size must be taken into account when determining offset, and there is a narrow range of acceptable offsets to give good handling characteristics. The general rule is that a slacker head angle requires a fork with ...
However, these ranges are not hard and fast. For example, LeMond Racing Cycles offers [44] both with forks that have 45 mm of offset or rake and the same size wheels: a 2006 Tete de Course, designed for road racing, with a head angle that varies from 71 + 1 ⁄ 4 ° to 74°, depending on frame size, and thus trail that varies from 51.5 mm to 69 mm.
Reducing the weight of the bike + rider by 1 kg would increase speed by 0.01 m/s at 9 m/s on the flat (5 seconds in a 32 km/h (20 mph), 40-kilometre (25 mile) time trial). The same reduction on a 7% grade would be worth 0.04 m/s (90 kg bike + rider) to 0.07 m/s (65 kg bike + rider).
English: A diagram to demonstrate the effect rake (offset) and head tube angle have on the trail of a fork. Intended for use on the en:Bicycle and motorcycle geometry page. It is an SVG version of the JPG listed below, made because SVG offers higher image quality and greater ease of editing.
Traditional bicycle head tubes and headsets are sized for a 25.4 mm (1 in) diameter steerer tube (also known as the fork column). Many frame and fork manufacturers are now building their parts around a steerer tube with a diameter of 28.6 mm (1 + 1 ⁄ 8 in). The larger diameter of the head tube and headset gives added stiffness to the steering ...
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A pedal cycle, commonly known as a bicycle is driven by legs and feet on pedals. A hand-cranked bicycle or handcycle is driven by arms and hands. A rowing cycle is driven by a rowing action using both arms and legs. A treadle bicycle is driven by a reciprocating, not rotary, motion of the feet. A bucking bike (with one or more eccentric wheels ...
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related to: bicycle fork offset distance in one foot of snow weight chart by size