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The second overdrive is with ring 2 braked which will cause sun 2 to spin faster than in the first overdrive gear. There is one reverse gear. Ring 1 and ring 3 are braked with the input only connected to sun 1. Sun 1 will drive ring 2 in the forward direction and with carrier 2 braked, sun 2 and sun 3 will spin in reverse.
Muncie SM319 transmission — 3-speed transmission physically identical to the Muncie SM318, with an added Borg Warner overdrive unit. Muncie SM420 transmission — 4-speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse.
2-speed automatic The Powerglide is a two-speed automatic transmission designed by General Motors . It was available primarily on Chevrolet from January 1950 [ 1 ] through 1973, although some Pontiac models also used this automatic transmission after the fire at the Hydra-Matic factory in 1953.
Chrysler was the last of Detroit's Big Three automakers to introduce a fully automatic transmission, some 14 years after General Motors had introduced Oldsmobile's Hydramatic automatic transmission and nearly three years after Ford's Ford-O-Matic. Packard's Ultramatic debuted in 1949, and Studebaker's Automatic Drive was introduced in 1950.
Roto's disadvantage was the 2-3 range or 1-2 gear change because it is not only a huge ratio jump from 2-3 range or 1-2 shift from 2.93 to 1.56, but also there is no fluid slippage in the coupling because the coupling drains (four-tenths of a second) to engage or apply the front clutch and so the trans goes to full mechanical connection.
Dynaflow (Buick) The Dynaflow was an automatic transmission used in various forms in Buick cars by the General Motors Corporation from 1947 until 1963. The transmission initially used a five-element torque converter, with two impellers and two stators, as well as a planetary gearset that provided two forward speeds plus reverse.
[2] This resulted in a transmission with a typical 4 speed 'H' pattern shift mechanism, plus an additional 2 speed 'high-low' selector which effectively split each of the 4 speed gears in two. This meant 8 forward gears in total. It was also possible to use the 2 speed selector in reverse, meaning that two reverse gears also existed.
The 1941 Chrysler M4 Vacamatic transmission was a two-speed manual transmission with an integral underdrive unit, a traditional manual clutch, and a fluid coupling between the engine and the clutch. [51] [52] [53] The two-speed transmission had "high" and "low" ranges, and the clutch was used when the driver wanted to switch between ranges. For ...