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Kalloy SeatpostsKALLOY ALUMINUM MOUNTAIN POST
Kalloy of Taiwan has made great gains in the US market in the last few years. This post has the same clamp design SR has made so famous before it. The clamp pieces are all cast aluminum. It uses a threaded square nut on top to fasten the clamp section and saddle securely no matter what angle it's set to. The upper and lower clamp pieces provide a 1 3/8" trough front to rear for the saddle rails to be held in. The Kalloy Aluminum post is micro adjusting using a single, steel bolt and washer to draw and cinch the saddle and clamp together. The recessed 6mm allen fitting on the bolt makes only one small wrench necessary for saddle angle and handlebar distance adjustments. The head piece is a single aluminum casting, hollowed slightly to reduce weight, that is pressure fit into the aluminum tubing section. A look inside the post, shows that there is 1 3/8" of the head piece firmly fit into the tubing section. The tubing has a precision lathed exterior to provide an exact fit into your seat tube. With the clamp perpendicular to the tubing section, the center of rail to end of tube length is 301mm. The weight of a 27.2mm Kalloy Aluminum post is 333 grams. The Kalloy Aluminum is made in Taiwan, and is available in, 25.4mm, 26.0mm, 26.4mm, 26.6mm, 26.8mm, 27.0mm, and 27.2mm in Silver only. These posts have been superceded by Kalloy's "UNO" brand of post in the US. We sold these for $14.99 KALLOY 4130 CRO-MOLY MOUNTAIN POST
This has become one of the most popular replacement posts in a long time. The 4130 Cro-moly post has a micro adjusting clamp and a stiff steel tubing section. The clamp pieces the same ones used on the post above, and are made of cast aluminum then painted glossy Black. The upper aluminum square nut is threaded to secure the entire clamp section and saddle to the post. The bottom of the lower clamp piece has knurls which mate into similar knurls on the top of the head piece. The clamp system is held together with a 6mm allen head, steel bolt and washer. The bolt is threaded with 8mm by 1.25mm thread pitch, 40mm long. A single allen wrench is conveniently all you need to adjust saddle angle and distance from the handlebar. The head piece, on the post, is cast, as one piece, of aluminum and slightly hollowed on the underside, to reduce weight, with a glossy Black painted surface. It is press-fit down an inch and a half, up to the alloy shoulder on the head piece, into a 4130 Cro-moly, thin walled steel tube section that is painted glossy Black. With the clamp perpendicular to the tubing section, the center of rail to end of tube length is 298mm. The weight of a 27.2mm Kalloy 4130 Cro-moly post is 353 grams. The Kalloy 4130 Cro-moly is made in Taiwan, and is available in, 26.0mm, 26.2mm, 26.4mm, 26.6mm, 26.8mm, 27.0mm, and 27.2mm It is also available in oversize dimensions for $8 more. They include 28.6mm, 29.4mm, 29.6mm, 29.8mm, 30.2mm, 30.4mm, 30.6mm, 30.8mm, 31.4mm, and 31.6mm sizes. Black only. These posts have been superceded by Kalloy's "UNO" brand of post in the US. We sold these for $14.99 in the standard diameters and $21.99 in the oversized models |
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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... |
