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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No Longer Made
SUNTOUR SUPERBE PRO REAR DERAILLEURThe Superbe Pro is Suntour's top-of-the-line road racing rear derailleur, for use with 6, 7, and 8 speed shift systems. It has an extremely fast acting short pulley cage. All the linkages are made of cold forged, high polished aluminum, the pulley bolts, pulley cage and pulley spacers are all made of aluminum. The parts of the changer that aren't aluminum are the mounting and pivot bolt, the cable fastening and adjustment bolts. The mounting and pivot bolts are replaceable with Titanium versions from SRP found at the end of this article. The high and low gear cam set screws are wisely installed on the body of the changer, as you would face it on the bike. They're very easy to get to. There is cable tension adjustment with matching knurls making hand adjustment easy, as well as B-Tension and pulley cage chain take-up tension adjustment. Installation is done using only a 5mm allen wrench. The pulleys are sealed, using a precision sealed bearing cartridge fit into a plastic outer pulley wheel with fine aluminum plates to protect the mechanism. The pulleys are held in the cage with aluminum alloy pulley bolts. This derailleur is the obvious choice if you desire superior workmanship and quality. A 5mm hex wrench installs the derailleur and cinches the cable. Weighing only 201 grams, it is fully AccuShift Plus compatible. The Superbe Pro comes with an 11" length of Grey derailleur cable housing, in case your shifter set comes with no housing to effect the turn from the frame drop out to the convenience adjuster on the changer. The housing is lined with factory ends installed. The largest cog you can use is 26 teeth., and the total capacity is also 26 teeth. No longer made, this fabulous rear derailleur sold for just $91.99
SUNTOUR XC PRO MICRO DRIVE XP00-SSBThe XC Pro MD is the ultra short cage implementation of the original XC Pro rear for the Micro Drive components group. It is identical mechanically to the other XC Pro rear changers, except in the cage. It will accept use as either a 6, 7, or 8 speed rear cog set and is Accushift Plus compatible. All major linkage parts are made of aluminum to reduce weight. The XC Pro MD weighs just 238 grams. The mounting and pivot bolts are replaceable wit SRP Titanium versions which are available at the end of this article. Adjusters for the high and low gearing and B-tension adjustment are conveniently located, and the cable tension adjuster is made of machined knurled aluminum for easily performed roadside adjustments. The cable anchor bolt cinches with a 5mm allen wrench, with the nut for the bolt retained by a well constructed and overbuilt housing on the back of the body. Both plates that make the pulley cage are aluminum, and space the pulleys at 55 millimeters center to center apart. Pulleys are a hard plastic with precision sealed bearing cartridges for the bearing assembly surrounded by machined aluminum plates. The largest usable cog is 28 teeth. The total gear capacity is 28 teeth. No longer made, this innovative rear derailleur sold $49.99 |
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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... |
