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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& Crossroads II TiresSPECIALIZED HARDPACK IIThe Hardpack II comes in two tire sizes 26 x 1.8" and 26 x 2.20" both are made in Japan using a steel bead, and both have a Skin sidewall. These tires were designed by the Wilderness Trail Bikes organization for Specialized to have manufactured and sell. The tread pattern is a highly complex weave of multi-shaped angular blocks which are beyond reasonable description. A look at the tread image, we hope, will suffice. The tread pattern is the same on both sizes merely enlarged to fill the width of the 26 x 2.20" tire. We found both models of the Hardpack II tires tested to the same rubber hardness, 67/A. $ 14.99
SPECIALIZED ROCK COMBOThe Rock Combo's tread block pattern was designed by Wilderness Trail Bikes for Specialized. It's made in Taiwan, using a steel wire bead, and has a darker than average Skin sidewall. The 26 x 1.95" tire uses a 43mm long hour-glass shaped tread block down the center of the tire. The hour glass shape has a sipe across the middle with the supply and collector funnel shapes hollowed. At the edges, spaced 4 to 5mm from the hour glass shape are tread blocks based on a rectangular shape with cut corners on the inner side. The vertically rolling side tread block have supports rising from the sidewall to provide an outer tire "edge". We found the tread rubber tested to a hardness of 65/A. RockCombo 26 x 1.95" - Skin $ Price in Catalog
SPECIALIZED CROSSROADS IIThe CrossRoads II tread pattern was designed by Wilderness Trail Bikes. It is made in Taiwan using a steel wire bead, and has a darker than average Skin sidewall. The tread pattern on the CrossRoads indicates that it's for largely pavement use. The small square tread blocks that run in an offset pattern down the centerline of the tire are joined by a thin ridge of tread to minimize the sound of tread blocks hitting the pavement. To the side of each of the center blocks are 3mm high U-shaped blocks with wide spaces surrounding them for grip in fine loose material. The edge tread block has supports rising off the sidewall to give them greater firmness. The edge blocks are U- shaped or T-shaped depending on the which side of the centerline, the square tread block is located. The CrossRoads II we tested had a tread rubber hardness of 66/A. CrossRoads II 26 x 1.50 $ 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... |
