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A seatpost with offset is necessary when the seat tube angle of the frame is too steep to give the desired saddle setback (the horizontal distance between a plumb line hung from the nose of the saddle and the bottom bracket spindle). Conversely, an "in line" post may be required if the seat tube angle is too slack.
Designed for unicycle trials, these unicycles are stronger than standard unicycles in order to withstand the stresses caused by jumping, dropping, and supporting the weight of the unicycle and rider on components such as the pedals and cranks. Many trials unicycles also have wide, 19-or-20-inch (480-or-510-millimetre) knobby tires to absorb ...
Bikes with child seats or single-child trailers can carry an adult and a child; Bikes with double child trailers can carry an adult and two children; A Sociable has two riders side by side. A tandem or twin has two or more riders behind each other. A triplet has three riders; a quadruplet has four.
Suspension seat posts and seat springs provide comfort by absorbing shock but can add to the overall weight of the bicycle. A recumbent bicycle has a reclined chair-like seat that some riders find more comfortable than a saddle, especially riders who suffer from certain types of seat, back, neck, shoulder, or wrist pain.
Self-balancing unicycles at 'Paris sans Voiture' (Paris without cars), September 2015. An electric unicycle (often initialized as EUC or acronymized yuke or Uni) is a self-balancing personal transporter with a single wheel. The rider controls speed by leaning forwards or backwards, and steers by twisting or tilting the unit side to side.
A monowheel rider in the 2011 Doo Dah Parade, Columbus, Ohio Hemmings' Unicycle, or "Flying Yankee Velocipede", was a hand-powered monowheel patented in 1869 by Richard C. Hemmings. [1] 1931 Cislaghi Motoruota monowheel, modified by Giuseppe Govetosa. A monowheel or uniwheel is a type of one-wheeled, single-track vehicle.
The International Unicycling Federation (IUF) is the international governing body for the sport of unicycling.It was founded in 1982 in the United States but is composed of representatives of unicycling nations from around the world.
In 1912, Harley-Davidson introduced their patented "Ful-Floteing Seat", which was suspended by a coil spring inside the seat tube. [17] The spring tension could be adjusted to suit the rider's weight, and more than 3 inches (76 mm) of travel was available. [18] Harley-Davidson used seats of this type until 1958. [19]