Reach BikePro on a 24 hour basis at 803-280-1537 Terry Dunbar is on duty as the technical expert, who also speaks Spanish as well as English and has quantities on hand information. Call her now for any questions about Bike Pro you may have.
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Reach BikePro on a 24 hour basis at 803-280-1537 Terry Dunbar is on duty as the technical expert, who also speaks Spanish as well as English and has quantities on hand information. Call her now for any questions about Bike Pro you may have. |
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Edco Headset
EDCO HEADSETThis well designed headset is made in Switzerland and is a bit pricey, but details have not been overlooked. The head lock nut and the upper bearing cup are forged of aluminum alloy then machined with edge cuts for a headset wrench. Each piece then has fine grinding performed to clean up burrs on the inside prior to the fork threads being cut. The head key washer is stamped aluminum that fits flush into a recess on the bottom of the head lock nut. This style of design makes it a bit more difficult for the head lock nut to back off in use. A precision cut stainless steel bearing race is pressed into both the upper and lower cup. The upper cone race is made of aluminum with a stainless race, and the fork crown race is also precision machined stainless steel. The bearing retainers are made of plastic and hold twenty-two 5/32" ball bearings. One of the features of this headset is the one- way grease injection holes or "ports" through the sides into the bearing cavity of the upper and lower bearing cups. These holes allow fresh grease to be injected into each bearing compartment. The headset has an excellent system of seals with recesses in each of the cone races that an O-ring fits around. There is a stem seal at the exit point on the head lock nut. Available in Silver and only in the 1 inch size. The Edco headset weighs 114 grams, and has a stack height of 37mm. $ Price in Catalog |
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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... |
