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Sampson UL Pedal


SAMPSON UL MOUNTAIN PEDALS

Sampson also remakes a more traditional pedal set for use with traditional toe clips and straps in an off-road environment. The Sampson UL ATB pedals incorporate parts made in Taiwan but are said to have small refinements performed in a final assembly process in the United States. They have a cast aluminum body that is satin smooth polished. On the top of the body a steel pin is driven into the surface of the two rear braces, and the outer front brace. A steel pin is driven into each of the rear body braces on the pedal bottom. These pins give a firm foot hold for soft rubber off-road shoes. The rear braces are milled with slots for a toe strap to pass through with enough space for the traditional toe strap twist. The brace ends are bored and tapped for the four machine screws that fasten the cage to the body. The pedal spindle is machined from Ti 6Al 4V rod, and like the Stratics 775 series pedals, it has been given Sampson's special surface treatment, raising it's hardness and slipperiness. The inner bearing for these pedals is really a 10mm long Teflon-like bushing, which provides for rotational support. The outer bearing is a sealed bearing cartridge, the Japanese NSK 696Z. The outer end of the spindle has 6mm diameter threads, on which a 10mm O.D. locking nut tightens, holding the spindle, bearing and pedal body together as single unit. A rubber O-ring seals the inner bearing against outside contaminants. The outer end of the body is closed off by a light (just 3 grams) rod end cap machined aluminum, which threads with a rubber O-ring in the body end. The pedal cage is die-cut from 1.6mm thick aluminum plate, with teeth on its upper and lower surface. Holes for the cage fastening bolts are recessed, so the bolts, when tightened, are flush with the cage surface. The lower rear of the cage has a broad protruding edge and a single large tang for use as a toe flip. The body is Silver and the cage is Black. A pair of the Sampson Mountain pedals weighs 245 grams. $ 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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