World's First Mass-Produced Automatic Transmission - Part 3 - Torus and Power Flow

The World's First Mass Produced Automatic Transmission - Part 3 - Torus and Power Flow

TIMELINE:
0:00 Start
0:10 The Torus
1:47 Drain Plug and Service Intervals
2:05 Special Fluid
3:00 Internal Torus Components
6:10 The Torus Connection to the input shafts
10:40 Power Flow through the Torus
15:00 The Reverse Anchor
16:54 First Gear Power Flow
17:50 Second Gear
18:32 Third Gear
19:01 Fourth Gear (Direct Drive from engine to output shaft)
20:30 Transmission Cooling
22:03 Reverse and Parking
23:54 The Reverse Cone Clutch
25:56 Speedometer Cable Drive and Driven Gears
27:16 Coming up in Part 4 - Hydraulic Components and Control

ABOUT US:
Weber State University (WSU) - Department of Automotive Technology - Transmission Lab.

This video is part 3 of a 5 part series. This video series tells the development history and shows the actual components and operation of a 1940 - 1955 General Motors Hydra-Matic 4-speed Automatic Transmission.

This transmission design was used by Oldsmobile, Cadillac, Pontiac, Lincoln, Rolls-Royce, Bentley, Willys, Nash, Hudson as well as the Cadillac-powered M-5 light tank during and other military vehicles World War II.

From what I can find, the 1941 Cadillac 346 V8 had 150 hp and 283 lb-ft of torque (3 pinion rear unit planetary gear set). 1953 Cadillac 331 V8 had 210 hp and 330 lb-ft of torque. (4 pinion rear unit planetary gear set)

This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel...

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