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WTB Bar Ends


WILDERNESS TRAIL BIKES HAMMER HANDLES

This reivew is included for historical purposes, these bar ends have been discontinued by WTB but it gives you an impression of how WTB approaches bar end design. The Hammer Handles have a rotational grip tube, by using a compound cinch assembly, that cinches separately the handlebar and the grip tubing section. The cinch assembly is machined from billet block aluminum. It is about 1.1 inches high and 2 1/2 inches long, with smoothed, quarter-round radiused edges. The cinch assembly has holes bored into each end, one has 7/8 inch inner diameter to fit on the handlebar, the other to fit the .93 inch outer diameter of the grip tubing. On the cinch assembly, centered between the entry holes for the bar and grip tube there is two holes drilled and tapped for the cinch bolts. Tightening the one nearest the handlebar clamps the cinch assembly to the handlebar, while tightening the other cinches the grip tubing. The two bolts are 5mm x .8mm thread pitch with a 20mm length, each weighing 3 1/2 grams. The cinch assembly slides over the final inch of the handlebar, and holds the grip tube cantilevered 1.1 inches off the end of the handlebar. This is one of the few bar ends that doesn't, in essence, "shorten" your handlebar. The grip tube, which has a 4 3/4 inch useful, exposed length, when clamped in, is held at a 15 degree from handlebar perpendicular, inward angle toward the front tire. The grip tube itself has nearly a 90 degree bend, but because the grip tube can be rotated, it may either face upward or inwardly at the user's discretion. Chrome plated press in end plugs for the grip tube are included, handlebar plugs are not needed. Available only in Silver, a pair of Short Hammer Handles weigh 205 grams. Remember to use these, you must have the industry standard, 7/8 inch outer diameter handlebar. Made in Northern California these sold in the $60 price range.





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...


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