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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Bottom Brackets Brake Systems
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Litespeed Bottom Brackets
LITESPEED NEW TI BOTTOM BRACKET The NEW Litespeed Ti B/B is departure from Litespeed's older standard type B/B, but not startling enough to ever really succeed. This B/B is a standard style with a fixed drive cup, adjustable non-drive cup and fixed bearing width. The spindle is machined from Ti 6al 4V rod. It has 2 degree tapered ends for use with all aluminum cranks. Each end of the spindel is bored to a 1 3/4" (44.44mm) depth and tapped with the 8mm x 1mm threads. The spindle isn't drilled through. A 90 degree shoulder is cut for each of the sealed bearing cartridges to butt against. Litespeed ahs chosen the Chinese ESB bearing of the 6903-2RS variety for both bearings. They are machine pressed onto the spindle. The cups are amchined from aluminum rod. The outer side of each cup has twenty equi-distant 2mm diameter holes so a Park BBT-2 tool can be used for installation. The spindle exit point in each cup has no O-ring or additional seal. The spindle with the installed bearings are machine pressed into the drive side cup and is installed together fromt the right side of the bike. The left, (non-drive) cup is screwed in separately after the drive side has been tightened. Once the left cup has been tightened with the Park BBT-2 an aluminum look ring tightens on the exposed non-drive threads to fix the cup. Generally lockrings have small notches or flat areas to grip with a wrench or spanner so the non-drive cup cannot loosen in use. The lockring has no notches or flats making final tightening impossible. The aluminum parts are anodized Black. The Litespeed B/B does not come with crank arm bolts and is available in 103mm, 107mm, 113mm, or 118mm spindle lengths to fit English threaded shells only. This B/B is not one we would recommend for the price, because of the lockring, Chinese bearings, non-hollow spindle, the lack of O-rings at the spindle exit, and no Ti crank bolts. The weight of the New Litespeed Titanium B/B with a 113mm spindle is 161 grams, (10 grams more than its predessor). Crank bolts are not included. Spindle Length-03-07-13-18 $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... |
