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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Action Tec Freewheel/CassetteACTION TEC TITANIUM 7 & 8 SPEED CASSETTE COGS
The Action Tec cogs are machined from 6Al-4V Titanium plate. Each cog is 1.8mm thick and uses the Shimano HyperGlide inner spline pattern so they can be used on any Shimano HG rear hub. The teeth have a swept back design and tapered tops but do not exactly replicate the ramped tooth design of HyperGlide. Large holes are cut through the piece in areas not needed structurally to reduce weight. A set of 3.0mm thick White plastic spacers is included with the cogs. Action Tec also includes one their 11 tooth thread-on lockring cogs described below. There are six models of Action Tec Ti cogs, we sell all six. 11/28-11-13-15-18-21-24-28 (156.5 gm) 7speed $ Price in Catalog 11/30-11-13-15-18-21-24-30 (166.5 gm) 7speed $ Price in Catalog 11/32- ( gm) 7speed $ Price in Catalog 11/28- ( gm) 8speed $ Price in Catalog 11/30- ( gm) 8speed $ Price in Catalog 11/32-11-13-15-18-21-24-28-32 (220.0 gm) 8speed $ Price in Catalog ACTION TEC 11 TOOTH LOCKRING/COG REPLACEMENT
One of Action Tec's more clever parts is this 11 tooth replacement cog. Machined of 6al-4V Titanium the cog has tapered and rounded teeth to work with HyperGlide cogs. The piece replaces the Shimano's 12 tooth steel first position cog and the steel lockring used in the HG70 & HG90, also the XTR and Dura-Ace cassette sets. The Action Tec cog threads into the end of the freehub, an aluminum spacer positions it properly for the chain and changer. The original steel parts weigh 24.5 grams while the Titanium replacements weigh 12 grams. Action Tec 11 t Titanium cog $ 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... |
