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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Headset Tools
PARK HCW SERIES HEADSET WRENCHESTo make final adjustments to your headset is sometimes difficult without the right tools. In tightening a headset properly, you need to tighten modestly the upper bearing cup down onto the upper cone race, hold the upper cup absolutely still, then tighten the headlock nut down against it. Without holding the upper cup still, while turning down the headlock nut, people often overtighten both pieces, substantially shortening the bearing life as they are crushed between the cone and cup races. The proper way is to use a thin spanner wrench to hold the upper cup stationary, then tighten the headlock nut with another spanner wrench (or a large Crescent wrench). Park HCW wrenches are thin spanners made for this purpose. In our experience, 1" headsets require 32mm spanners, 1 1/8" headsets require 36mm spanners, and 1 1/4" headset need 40mm wide spanner wrenches. Park makes five models of spanner wrenches for headset use. They are made of 1/8" thick steel, fully Chrome plated, and have a hole at one end of the handle so you can hang them on a pegboard hook. They have open end wrenches at both ends. 32mm span/15mm pedal wrench $ Price in Catalog PARK PROFESSIONAL BEARING CUP PRESSIf you are serious about your bicycle work and you want the proper tools to perform it. The Park cup press rapidly changes size to fit any frame headtube and presses the cup, one at a time with deliberate and even pressure into the frame. The cup press is also capable of pressing the one crank cups used by BMX racers and freestylists. It does not face the headtube (shave the top & bottom so they are square to one another). $ Price in Catalog PARK HEADSET CUP REMOVERAnother tool for serious service is the cup remover tool. The Park tool is an American made and less expensive tool that Campagnolo first made. It became known in the vernacular by shop mechanics as the "Campy dildo" because of its appearance. The tool slides through the headtube with cups installed. The bottom of the tool has four semi-circular tangs that expand inside the headtube. A downward rap with a hammer on the rounded steel top, the cup is evenly driven out of the frame. Made of steel. $ 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... |
