What is Columbus frame?
Columbus Tubi is a manufacturer of steel tubing used in bicycle frames, located in Settala, in the Province of Milan. The company was founded in 1919 by A.L. Colombo and was taken over by Colombo’s youngest son, Antonio, in 1977….Columbus (company)
| Type | Privately held company |
|---|---|
| Key people | Antonio Colombo |
| Website | columbustubi.com |
What are double butted tubes?
On double-butted tubes the thickness of the tubes at both ends is thicker than in the centre, so a typical double-butted tube (0.8/0.5/0.8) would have a thickness of 0.8mm at end (1), a taper portion, then a centre section of 0.5mm, a taper portion, and a thickness of 0.8mm at end (2).
What is Columbus Spirit HSS?
Columbus Spirit HSS is the highest level of steel produced by Columbus. The tubes are seamless, which means the tube is formed by stretching it without welding a joint.
When was Columbus SLX introduced?
1980s
Columbus SLX was released in the early 1980s as the pinnacle of Columbus tubing, made of Cyclex Cromo Steel. In order to make it stiffer and better suited to a variety of terrain, it used a helicoidal reinforcement to the bottom bracket, butted downtube sections and lighter chain stays.
What is Tange tubing?
Tange International Co. is a major Japanese manufacturer of high-quality steel tubing for bicycle frames, established before 1920. They are a rival to the British-based tubing manufacturer Reynolds.
What is a double butted bicycle frame?
There are two methods used to butt a frame tube. Double Butting—As the tube is shaped, extra material is allowed internally at each end of the tube. By increasing these areas of the tube, the overall tube wall thickness can be reduced, thus saving weight.
What is Reynolds steel?
Reynolds has over the years developed a number of steel alloys, most notably Reynolds 531, which has a high strength and can be made into strong, but lightweight tubes for bicycle frames.
Is a steel bike frame good?
For all of these reasons, steel is a popular option for boutique and custom bikes, as well as touring and bikepacking frames, where weight is less of a concern. Steel offers better value than titanium, and durability and longevity are key.
What is Columbus aelle?
Aelle is a type of Columbus tubing. “Tre-tubi” means that they used the Columbus tubing on the “main triangle” of the bike: the top tube, seat tube and downtube. The seat stays, chain stays and probably the fork are made of a heavier steel. Aelle tubing is straight-gauge Chromoly steel.
What does butted tubing mean?
After heating to over 1000 C, a hole is pierced through the center to form a very thick-walled tube. The wall thickness and diameter of this tube are then progressively reduced by hot rolling and cold drawing until it is sized for the butting process.
What makes a good bike frame?
Steel is the most commonly used material in bike frames. Carbon or high-tensile steel is a good, strong, long-lasting steel, but it isn’t as light as its more high-tech brother, the steel known as chromoly. A workhorse of the industry, chromoly is a light, strong steel.
Is Columbus Thron tubing good?
Very good quality/price ratio. Framebuilder: Excellent mechanical properties together with a good resistance to overheating, without impairing the frame’s resistance to loading during ordinary use. Thron offers short double butted tubes with thinner wall thicknesses: 0. 9 and 0.