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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Machine Tech Hubsets
MACHINE TECH HOLLOW CORE FRONT HUBThe Machine Tech hollow core is very similar to the RinglŽ Super Bubba. It appears the shape of the hub shell, and what weight or lack of it the shell shape introduces are the only differences. The Hollow Core is considered a suspension style front hub. The Hollow Core shell is a single piece, machined from aluminum alloy. It's turned on a lathe to give it the necessary shape, including its bulged center. The center bulge is hollow having been both drilled through and further hollowed by milling away the interior of the bulge. The shell is bored from each side making a shouldered seat for the precision sealed cartridge bearing used to carry the load on each side. As a suspension front hub the Hollow Core uses an over sized axle. Machined from aluminum rod, it has a 12mm outer diameter with the last 5mm of the ends reduced (turned to) to the standard 9mm required for fork ends. The bearings are covered by a machined aluminum collar that slides down the axle. The collar covers completely and protects the bearing cartridge. A groove recessed within the collar seats an O-ring, which compresses to hold the collar in place when the hub isn't on the bike. It also seals axle against contaminants migrating toward the bearings. The collar has a 22mm diameter outer face with a knurled surface. The Hollow Core front has a 50.5mm hub flange diameter, with the flanges spaced 68mm apart. The Hollow Core spoke holes have a 43mm center circle diameter. It is available in either a 28 or 32 spoke hole drilling. The hub shell and both collars come anodized in the same color, the axle is Silver. The color choices are Blue, Black, Grey, Lavender, Red, or Silver. The weight of a 32 hole Hollow Core is 155 grams. Hole-28-32/Color-B-BK-GY-L-R-S $ Price in Catalog
MACHINE TECH Power Claw REAR HUBMachine Tech also makes an 8 speed rear cassette freehub. It became available after this article was written and it will be reviewed in the future. It has 32 or 36 hole drilling and is available in the same 6 colors Blue, Black,Grey, Lavender, Red, or Silver Hole-28-32/Color-B-BK-GY-L-R-S $ 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... |
