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MRX Ti Combo Bar


MRC TITANIUM CANTINA BAR

You know, everyone here in California loves Mexican food, and it seems that Steve Mc Mahon is no exception. This is Mc Mahon Racing Cycles' first entrant into the combination handlebar market. The tubing for the Cantina is made by Haynes, which among the American Titanium tubing mills well known for the quality of their seamless tubing and its alloy composition. The Cantina is made of straight gauge, non-tapered, Ti 3Al- 2.5V alloy tubing with a 8/10th millimeter wall thickness. It has no center bulge and uses a 2 1/4" long, Black Delrin plastic shim to build the center dimension from the 22.2mm outer diameter of the tubing up to the required 25.4mm standard needed for the stem's binder system. The Delrin piece when tightened is an improvement over the machined aluminum shims used in the past because the traditional "creak" has been eliminated. The aluminum shims permitted the handlebar to rock slightly within the shim and the binder system making a "creaking" sound as body weight shifted from one side of the bar to the other. The tube has 4 bends. There is a slight bend backwards at 2 3/8" inches from each side of center. These are made at either a 3¡ or 5¡ angle and give the bar its traditional rearward sweep. The remaining curves at the ends create the bar extension element, smoothly curving the handlebar through the bend so the ends face inward slightly toward the front wheel. The bar extension moves forward 5 1/4" from the handlebar and there is no added upward angle to bar extension. The tubing ends are plugged using the Rodon cap described in the Bar Extension section of this book. The Cantina has a 575mm (22 5/8") width measured outermost curve to outermost curve. The handlebar is available in a 3¡ or 5¡ bend, has the natural Titanium Grey color. The 3¡ bend model weighs 186 grams. No longer made, the Cantina bar sold for $119.99





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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