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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American Classic Hubsets
AMERICAN CLASSIC HUBSETAmerican Classic hubs are made in USA, using a one piece aluminum hub shell construction. The front hub is turned on a lathe from aluminum rod stock. It's drilled through, then bored from each end to make a recessed cavity for the precision sealed bearing cartridge used in each side. Once the bearings have been pressed in place, a hollow aluminum axle machined from rod is pressed through the length of the hub and bearings. The axle has 12mm outer diameter and a 6.35mm inner diameter. It's important to note, because this hub uses precision sealed bearings, all the weight on the hubs is vertical and using an aluminum axle is an acceptable way to reduce weight without compromising the integrity of the hub. A groove is cut around the axle 2mm from each end seats a small rubber O-ring. The O-ring stands a little taller than the axle surface and is used as a compression retainer for an axle cap. The front hub uses two machined aluminum axle caps.
Each of these caps slides over the axle, and is held in place by the O-ring. A 9.3mm O.D. steel contact washer is pressed onto the cap, over the reduced 9mm diameter end that fits in the fork. The rear hub is manufactured in the same way as the front. However, it has threaded drive side for an English threaded freewheel to thread on. The American Classic rear hub comes with three axle caps. The caps will fit on either end of the axle. Used in particular combinations they will properly space and build the axle to accommodate a 126mm 6 or 7 speed Road use, 130mm 8 speed Road / 6 speed Mountain use, or 135mm 7 or 8 speed Mountain use. The rear is sold to beciome either a 126/130mm or a 130/135mm. These caps like those on the front axle, add further support to the axle, and have a 9.3mm steel contact washer pressed onto the 10mm diameter protrusion that fits into the drop-out. These hubs come with a pair of American Classic steel skewers which are described toward the end of this article. The front hub has a 50.5mm hub flange diameter, with the hub flanges 69mm spaced apart. The front spoke holes have a 43.5mm center circle diameter. The rear hub has a 50.7mm hub flange diameter, with flanges spaced 57.5mm apart. The rear spoke holes have a 43mm center circle diameter. With steel skewer, the front weighs 203.5 grams, (skewer is 56 grams), the rear with skewer, and without cogs, weighs 240 grams, (skewer 60 grams). The America Classic hubs are hard anodized in six colors, Blue, Black, Gold, Lavender, Red or Silver. The lever cap and adjusting nut of the skewer are anodized to match the hub color. The skewer lever is always Black. The hubs are available in 28, 32 or 36 hole drilling, matched front & rear the way you want. Please specify hole pattern. American Classic front hub only $ Price in Catalog
AMERICAN CLASSC SPEEDSTER TIME TRAIL FRONT HUB |
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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... |
