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Portage strap: a strap (usually made of leather) attached to the inside of the bike frame, designed to make carrying the bike over one's shoulder easier; Pulley wheel: see Jockey wheel; Power meter: a device on a bicycle that measures the power output of the rider; Quick release: a skewer with a lever on one end that loosens when the lever is ...
The meteorite is composed of meteoric iron and schreibersite. The meteoric iron has 5.1% Nickel, and is all in the form of kamacite. The preatmospheric mass was estimated to be at least 11,000 kilograms (24,000 lb). The surface of the meteorite is covered in an oxidation layer. [2]
A steel hardtail mountain bike frame produced by Rocky Mountain Bicycles. A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle and a paired rear triangle.
2020 full suspension mountain bike. A mountain bike (MTB [1]) or mountain bicycle is a bicycle designed for off-road cycling. Mountain bikes share some similarities with other bicycles, but incorporate features designed to enhance durability and performance in rough terrain, which often makes them heavier, more complex and less efficient on smooth surfaces. [2]
SRAM is an example of a recent trend within the high-end cycle-component segment of the bicycle industry, where companies seek a position as a "one-stop shopping center" for bicycle frame manufacturers/bicycle brand owners, supplying all or most of the parts needed to build a complete bike.
Iron meteorites, also called siderites or ferrous meteorites, are a type of meteorite that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite. Most iron meteorites originate from cores of planetesimals, [3] with the exception of the IIE iron meteorite group. [4]
This week, explore what lurks in asteroid dust, marvel at the world’s largest beaded burial, discover an elusive creature photographed for the first time, and more.
The first Merlin frame was a mountain bike frame custom-built for the defending National Mountain Bike Champion Joe Murray. [2] In the following year, the company began a strong relationship with frame designer Tom Kellogg, who helped them produce the world's first 3-2.5 titanium alloy road bicycle frame. [ 2 ]