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Cutaway saddles resemble regular saddles in their design, but with the middle part cut out to reduce pressure on the perineum among men. Noseless saddles are basically two separate saddles next to each other, with one smaller "saddle" per buttock. Such saddles achieve a similar relief of pressure by using a different design.
The fixed length between bottom bracket and rear axle gives the URT the advantage of zero chain growth and consistent front derailleur shifting. Additionally the bike is easily modified into a single-speed. However, as the URT's suspension moves, the distance between seat and pedals changes, detracting from pedaling efficiency.
A flat bar is a nearly-straight tube, in most cases slightly bent toward the rider. Many penny-farthings and early safety bicycles had flat handlebars. The angle between the slightly swept-back ends of the handlebar and the axis of the stem clamp is known as the sweep angle.
Breastplates, breastcollars or breastgirths attach to the front of the saddle, cross the horse's chest, and usually have a strap that runs between the horse's front legs and attaches to the girth. They keep the saddle from sliding back or sideways. They are usually seen in demanding, fast-paced sports.
Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.
The 'diamond' frame's central, horizontal top bar forces the rider to swing a leg over the bicycle's seat. A Triumph step-through, ladies', or open frame Dursley Pedersen bicycle circa 1910 A penny-farthing photographed in the Škoda Auto Museum in the Czech Republic A Brompton folding bicycle Bicycle in Victorian Plymouth, England, with a predecessor of the Starley diamond-frame A cantilever ...
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Cage length, when combined with the pulley size, determines the capacity of a derailleur to take up chain slack. Cage length determines the total capacity of the derailleur, that is the size difference between the largest and smallest chainrings, and the size difference between the largest and smallest sprockets on the cogset added together. A ...