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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Joe's Brake BoosterJOE'S CANTILEVER BRAKE BOOSTER
The Joe's Brake Booster is well conceived and executed stiffener that is milled from aluminum plate that is 4.72mm thick. The piece is much larger than many other booster plates. It's total height is only 137.5mm but its total width 151.5mm. Most of the piece is milled way in the form of six large slots, leaving bands of material that are 5mm wide at the base of the arm and broaden to 7mm at the top of the booster plate. The inner height of the plate is 99mm and the inner width between the arms is 52.4mm. The Joe's Booster comes with two different sets of spacers to make certain that there is direct fit for whatever type of brake is on the bike. There are also two sets of bolts sent with each Booster. Both have 6mm by 1mm threads, the shorter set is 25mm long with each bolt weighing 5.5 grams. The longer set is 55mm and each bolt weighs 13.5 grams. The plate will work on cantilever studs spaced as close as 69mm and as far apart as 98mm. The plate weighs 63 grams. The most minimal set of hardware using the short bolts and flat washers weighs 14.5 grams. The most severe set of hardware by weight, using the long bolts and large aluminum spacers weighs 44 grams. The total weight of the Joe's Brake Booster could be as little as 77.5 grams or as much as 107 grams. The plate and all spacers are available anodized in Blue, Black, Green, Lavender or Silver. Joe's designs was bought by the same ex-Bell Sports employees that own Crital Racing, Carmichael Pulleys, and Mantis Frames. This piece (if it will still be available) will be sold under the Critical Racing brand name. The Joe's name is expected to be retired. The Joe's derailleurs will be sold as a Carmichael. |
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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... |
