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Twin-Traction Beam was invented by John A. Richardson and Donald G. Wheatley of Ford Motor Company covered by US patent 3,948,337 issued April 6, 1976. The patent name was “Independent front suspension for front-wheel drive” which was assigned to Ford Motor Company. [1] [2] The Dana Holding Corporation manufactured
Another use of the swing axle concept is Ford's "Twin I-Beam" front suspension for trucks. This system has solid axles, and may transmit power in four-wheel-drive versions, where it is called "Twin Traction Beam". It is an independent suspension system, as each tyre rises and falls without affecting the position of the other.
Replacing the rudimentary straight-axle in the front was all-new independent "Twin I-Beam" suspension with coil springs on two-wheel-drive trucks. [4] The change in suspension also lengthened wheelbases slightly. 1965 and 1966 F-Series trucks are distinguished with a "TWIN I-BEAM" emblem on the front fender.
In the 1960s, Jeep used a unique Dana 44 IFS setup, that was short lived. In the 1980s and 1990s, Ford used a form of IFS known as "Twin Traction Beam" (TTB). This Dana 44 had no axle tubes but attached to the driver side traction beam, which also acted as a cover plate, and had "open air" axles which traveled through the beams to the spindles.
For investors, however, it's important to note that Ford, along with other Detroit automakers, has a big problem in China. It's no longer poised to be the second pillar of profits that it was once ...
The Twin Traction Beam or TTB was used in the Ford F-250 from 1980 to 1997. The TTB Dana 50 was also used selectively in the F-350 from 1980 to 1986. The GVW was lower in a F-350 with a TTB Dana 50, than a F-350 with a solid axle. The GAWR of a TTB Dana 50 was 4600 lbs.
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First, Ford replaced the Twin I-Beam suspension with a lighter-weight short- and long-arm suspension, but did not lower the engine. This raised the Explorer's center of gravity, making it more prone to rolling in an accident or sharp turn. [24] Second, Ford reduced the amount of material in the roof.