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Aztec Bicycle Brake Pads


DELTA/MADISON AZTEC BICYCLE BRAKE PADS

These have historically been the single most asked for replacement brake pad because of a test printed in a magazine a few years ago. The Aztec pads are made in a Grey color by Kool-Stop for a company originally known as Madison but was bought by a British Corporation and is now know as Delta. The Aztec pad comes in both a non-threaded for cantilever mounting post and a threaded version for the Machine Tech, MRC, Marinovative and Road caliper mounting post. The Aztec pad is 58mm long with a 14.25mm height. The rim contact area is 56.75mm by 10.5mm high. The non-threaded post is 6.92mm in diameter with a 29mm useful length. The threaded pad has a steel post with 6mm by 1mm threads and has an 18mm useful length. The threaded post model comes with a convex washer that pivots and locks against the concave back of the steel post. The threaded model also comes with a machined aluminum nut to fasten it to the caliper. Like other Kool-Stop manufactured bicycle brake pads, the pad material feels less like a rubber than it does a plastic compound, in fact it's a synthetic rubber/polymer compound. We found the pad compound to have an A/89 hardness. Aztec are sold in pairs, and have a weight in the cantilever, non-threaded style of 34 grams per pair. The pair weight of the threaded pad with washer and nuts is 49 grams. Made in USA.

$ Price in Catalog

AZTEC BICYCLE RIM RAKES

An accessory to improve the performance of either model of Aztec bicycle brake pads is a pair of Rim Rakes. The Rim Rake is made of Black molded plastic which shrouds and encloses the bicycle brake pad. To hold its position firmly on the brake pad it relies on a raised area molded near the mounting bolt on the pad. There are also four snap locking tabs around the inner skirt of the Rim Rake that grip an exposed edge of the brake pad. The Rake faces to the rear of the bike so that the revolving wheel is always forced into its dirt catching scoop. The scoop is flexible and pivoting with a 12mm wide circular leading edge. When the pad is properly positioned the Rake skims along the wheel rim and knocks away mud and debris leaving a clean rim that the pad can really stop. Each Rim Rake weighs 3 grams and can be moved and re-used with new Aztec brake pads as they wear out.

pair of Rim Rakes $ 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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