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Specialized Hub Skewers


SPECIALIZED TRICK RELEASE SKEWERS

Specialized has made in the United States a set of Titanium skewers. The Trick Release has a machined aluminum lever that is barrel polished after machining. The lever is 70mm long and 1/2" tall. The lever's height narrows in the middle and becomes thinner in two places on its inner back side. These narrows and recessions provide a thumb, fore and middle finger grip to open and close the lever. The lever has a cam shape to close and firmly lock the skewer, which rotates against the concave plastic side of a contact washer. The contact washer, made largely of aluminum, has a 19mm diameter with three machined raised ridges to grip the fork blade on its inner face. The nut is machined from aluminum rod, also with three machined ridges on its inner face. At the outer end of the threads is a plastic insert which holds the nut in place on the threaded rod The 18.9mm diameter nut has a trough cut around the perimeter with a rubber O-ring inserted in it. This O-ring provides the grip to hold the nut in place while tightening the skewer. The pivot pin holding the skewer rod to the lever appears to be made from stainless steel, while the rod itself is made from 6Al-4V Titanium. The volute springs are made of round spring steel wire. The front Trick Release weighs 39 1/2 grams, while the rear, (made for 135mm overlock mountain hubs) weighs 42 1/2 grams. The Trick Release set is available with the aluminum pieces anodized either Black or Silver.

Color-BK-S / T $ Price in Catalog





In-depth Information About Metals

Aluminum
Aluminum is extracted electrolytically from bauxite ore. It is made by the electrolysis of aluminum oxide which is found in larger concentrations within bauxite ore. Bauxite is a mixture of the hydroxides of aluminum, together with other impurities such as oxides of iron, titanium, and silicon. Bauxite is produced by the weathering and change of aluminum silicate rocks usually found in tropical and semitropical regions where climate has produced an accelerated weathering process. Bauxite is not a rare ore and is widely available in the US, the Caribbean, and Europe. Approximately 4 pounds of read the full article...

Beryllium
Beryllium is a specialty metal that is steel-grey metal in color, with an extremely low density, making it very light weight. At 1.85 grams to the cubic centimeter, its density compares to that of magnesium. It is also a high strength metal, making it possible to design light weight, thin membered parts with ahigh stiffness. A column made of beryllium to support a load placed directly downward on top of it, will have a greater load carrying capacity, and be lower in weight than any other metal of equal size.

Until the 1950's beryllium was used read the full article...

Titanium
The element titanium was discovered in 1763 by an English cleric, William Gregor who was an amateur chemist with an inquiring mind. It was in the black sands of Cornwall that he discovered the new element that had up to that time, attracted little scientific interest. A few years later, an Austrian, Klaproth, extracted the same element from an ore widely known as "rutile", which is a mineral consisting of titanium dioxide (one titanium atom, two oxygen atoms), that is a reddish-brown substance with a slight metallic luster. While rutile is the highest grade read the full article...

Metallurgic Hardness Testing
There are three types of tests used with accuracy by the metals industry,they are the Brinell hardness test, the Rockwell hardness test, and the Vickers hardness test. Hardness is the property of a metal which gives it the ability to resist being permanently deformed (bent, broken, or have its shape changed), when a load is applied. The greater the hardness of the metal, the greater resistance it has to deformation. Since the definitions of metallurgic ultimate strength and hardness are rather similar, it can generally be assumed read the full article...


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