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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Phil Bottom BracketsPHIL SEALED CRANKBEARING BOTTOM BRACKET
If you want an indestructible bottom bracket, the Phil Wood Crankbearing is among the most well known. The Crankbearing definitely is not the lightest, (weight at the B/B position is not that critical), but it is strong, smooth, and was the first to employ precision sealed cartridge bearings. This bottom bracket is different. It is uses a thin stainless steel tube, into which are pressed, on each side, French made SKF, model #61903-RS1Z+37 precision sealed bearing cartridges. Through this bearing arrangement passes a precision ground and machined steel spindle, which is locked into place. The spindle ends are bored to a depth of 1 1/2 inches and then tapped for the crank bolts, leaving a solid, undrilled center. This entire cartridge unit is placed in your bottom bracket shell and a splined retaining ring is threaded from each side into the shell to hold the B/B in place. Because the rings are adjustable from each side, there is some lateral variation that is possible by adjusting the position of these rings. The cartridge bearings will likely never need maintenance due to the special Phil Wood design. Mounting rings are made in aluminum with English or Italian threads. The spindle can be one of seven lengths, 108mm, 113mm, 119mm, 125mm, 130mm, 135mm and 140mm. The Phil Crankbearing in the 113mm spindle, without rings, weighs 262 gram, the aluminum ring set weighs 11 grams. The aluminum ring set is available separately should you need to replace it later. Be sure when you order the Crankbearing, to specify the spindle length and English or Italian thread. Spin-08-13-19-25-30-35-40Thread-E-I Aluminum $Price in Catalog PHIL METAL MATRIX CRANKBEARING BOTTOM BRACKET
There is a second variation of the Crankbearing. It has the steel outer tubing shell replaced with a Metal Matrix version to reduce weight. The steel spindle has been replaced with one machined from Titanium 6Al-4V rod. The Ti spindle, like the steel one has each end bored to a 1 1/2" depth and then tapped for the crank arm bolts. The bearings used are still French SKF but the model is the slightly different #61903+42 PW903. The Metal Matrix Crankbearing comes with a set Black anodized, machined aluminum mounting rings, which can be threaded for either English or Italian B/B shells. This Crankbearing is available in seven spindle lengths; 108mm, 113mm, 119mm, 123mm, 125mm, 130mm, and 135mm. The weight of the 119mm length with the included aluminum mounting rings is 164 grams. Spin-08-13-19-23-25-30-35/Thread-E-I $Price in Catalog PHIL CRANKBEARING PORTABLE MOUNTING RING WRENCH
As with many of the sealed bearing and "unit" type bottom brackets, the Phil Crankbearing has a unique spline system to thread and tighten the mounting rings into the B/B shell. This Phil tool is made to allow proper installation using a 12 inch adjustable wrench. The tool itself is made of exquisitely machined stainless steel and weighs 38.5 grams. $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... |
