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In 1993, BBS merged the gap between their three-piece forged wheel and one-piece cast wheel with the two-piece design found in the RSII, defining BBS as a pioneer in one-, two-, and three-piece wheels. BBS developed a magnesium forged wheel in 1994 for motorsports use, especially in Formula One, which was over 20% lighter than the standard cast ...
There are two types of forged wheels: one piece and modular. Modular forged wheels may feature two- or three-piece design. Typical multi-piece wheels consist of the inner rim base, outer rim lip and wheel center piece with openings for lug nuts. All parts of a modular wheel are held with bolts. BBS RS is one of the most famous three-piece ...
Construction of wire-spoked wheels is generally termed as wheelbuilding, so wheel construction refers to construction of non-wire wheels, e.g. wheels of cars and other heavier vehicles. Wheels are constructed in a wide variety of designs using different materials, but in the early 21st century, aluminum and steel are most often used, with steel ...
SSR Wheels (formerly known as Speed Star Racing Wheels) is a Japanese wheel manufacturer for both motorsport and aftermarket applications, headquartered in Osaka, Japan. The company is often credited as being the first to ever make a three-piece wheel with their MK-I wheel in 1971, and remains one of the most notable Japanese producers of ...
Centreless wheels are toroidal in shape and have one or multiple bearings along the rim. Propulsion can be achieved in different ways, such as with gear teeth along the inner surface of the rim. They can be made lighter than solid and spoked wheels, resulting in better handling, [ 1 ] and less rotational inertia.
They often consist of at least 3 wheels per assembly, but can contain more. The typical arrangement of the wheels are: Running wheels (also known as road wheels or tractor wheels): positioned on the top of the rail, bearing the weight of the train. Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails ...
Work Wheels released their first range of wheels in 1977 [2] under the name "Work Equip", which continue to be manufactured today under popular demand. Commonly regarded as the leading manufacturer of Single, Two and Three piece forged wheels for automotive use, Work Wheels adopt a "on demand system" in order to produce products under direct ...
Most train wheels have a conical taper of about 1 in 20 to enable the wheelset to follow curves with less chance of the wheel flanges coming in contact with the rail sides, and to reduce curve resistance. The rails generally slant inwards at 1 in 40, a lesser angle than the wheel cone.