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Shimano Pedaling Dynamics, commonly called SPD, is a design of clipless bicycle pedals and associated cleats first released by Shimano in 1990. [1] [2] The first model, PD-M737, was aimed at mountain biking enthusiasts who, prior to this, had to use toe clips and straps or "road" clipless pedals which clogged with mud and made walking very difficult in unrideable situations.
SPD ("Shimano Pedaling Dynamics") SPD clipless pedal PD-M520 The SPD pedal was released by Shimano in 1990 and forms one part of a clipless bicycle shoe/pedal system. While not the first, its innovation was its small cleat which fitted into a recess in the sole of a shoe designed for SPD use.
Whereas most of the other types of bicycle in this section are designed around a 'diamond frame' geometry, where the pedals and chainset are located at the bottom of the bicycle and handlebars are at the front, recumbent bicycles (recumbents) generally use a "boom" and rear triangle combination with the pedals and chainset located at the front ...
There are two methods for using pedals with toeclips. The first is a cycling shoe with a slotted shoeplate. Before the introduction of the clipless pedal, most racing shoes had a hard leather or plastic sole to which a metal or plastic shoe plate or cleat was attached. The shoeplate had a slot that fitted into the pedal.
The next major development in clipless pedals was Shimano's SPD (Shimano Pedaling Dynamics) pedal system. Whereas Look cleats are large and protrude from the sole of the shoe, SPD cleats are small and could be fitted in a recess in the sole, making it possible to walk (although comfort will vary, as the soles of different cycling shoes vary in ...
This page was last edited on 28 May 2021, at 15:34 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
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