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Seat rails: a metal framework over which saddle covering is stretched. The seat post attaches to the seat rails by means of a clamp; Seat lug: a frame lug on the top of the seat tube serving as a point of attachment for a clamp to secure the seat post; Seat tube: the roughly vertical tube in a bicycle frame running from the seat to the bottom ...
The ragged cords can be seen on the edge of this piece of rubber, hence the term "rag joint". The bolt holes themselves are often reinforced by steel tubes moulded into the doughnut. The origins of this form of universal joint are from early vehicles that used a disk of thick leather as a similar flexible joint. These were used into the 1920s.
Clockwise from top left: seat lug, upper head lug, lower head lug. This seat lug joins the seat tube, top tube, and seat stays of a steel touring bicycle frame. It also has an opening in which to insert the seat post, and a clamp to hold the seat post securely in place.
Carriage harness saddle (left); heavy-cart saddle (right) A harness saddle or pad is the piece of the harness that lies across the horse's back. It is not the same as a riding saddle. A saddle is a stuffed piece of leather that supports the weight of shafts. Saddles for heavy commercial carts may be quite substantial in size to help distribute ...
The rear triangle consists of the seat tube and paired chain stays and seat stays. The chain stays run parallel to the chain, connecting the bottom bracket to the rear dropout, where the axle for the rear wheel is held. The seat stays connect the top of the seat tube (at or near the same point as the top tube) to the rear fork ends.
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In mechanical engineering, a kinematic diagram or kinematic scheme (also called a joint map or skeleton diagram) illustrates the connectivity of links and joints of a mechanism or machine rather than the dimensions or shape of the parts. Often links are presented as geometric objects, such as lines, triangles or squares, that support schematic ...
A bicycle saddle, sometimes called a bicycle seat, is one of five contact points on an upright bicycle, the others being the two pedals and the two handles on the handlebars. (A bicycle seat in the specific sense also supports the back.) [ 1 ] The bicycle saddle has been known as such since the bicycle evolved from the draisine , a forerunner ...