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Road racing bicycle forks have an offset of 40–50 mm (1.6–2.0 in). [7] The offset may be implemented by curving the forks, adding a perpendicular tab at their lower ends, offsetting the fork blade sockets of the fork crown ahead of the steerer, or by mounting the forks into the crown at an angle to the steer tube.
An autocollimator works by projecting an image onto a target mirror and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector. A visual autocollimator can measure angles as small as 1 arcsecond (4.85 microradians), while an electronic autocollimator can have up to 100 times more ...
The width is the inside distance between the bead seat faces. The offset is the distance from the wheel's true centerline (half the width) to the wheel's mounting surface. Offset is covered in more detail below. A typical wheel size will be listed beginning with the diameter, then the width, and lastly the offset (+ or - for positive or negative).
Used with an autocollimator or angle dekkor and mirror it can be used for machine tool axis squareness checking and for measuring the squareness of surfaces. It has two mirrors at 45 degree to each other. One is half-silvered, called horizon glass, and other is fully silvered, called index glass. It measures angle by double reflection.
Due to this, early cars had just a single rear-view mirror mounted on the top of the windshield or on top of the dashboard. When side mirrors were introduced to help drivers see overtaking vehicles, most cars only had the driver side mirror as standard equipment. A passenger side mirror was optional on most cars through the 1970s. Today all 3 ...
The term fork is sometimes also used to describe the part of a bicycle that holds the rear wheel, [1] which on 19th century ordinary or penny-farthing bicycles was also a bladed fork. On most modern bicycle designs the rear wheel is now attached to a rear triangle comprising the seat tube , a pair of seat stays , and a pair of chain stays ...
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A leveling kit usually consists of stronger front springs to lift the front end ride height so that it matches the rear ride height. This gives a more balanced/level look to the vehicle when unloaded/empty and increases offroad capability/angles at the cost of less traction, handling, aerodynamics and head lifting when loaded with cargo in the ...