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The previous work of Laumeister at GE on the experimental Delta electric car that debuted in 1968 helped pave the way for the production of the Elec-Trak. [2] Despite the limited production and availability of the electric tractors, many Elec-Traks are still in use today [ 3 ] and have a cult following among tractor and electric vehicle ...
Later systems have used modern electronic controls and quickly reversible motors with good slow-speed control to the hoist winch motors, so as to give a positioning accuracy of inches. Some early systems used controllable hydraulic gearboxes to achieve the same result, but these added complexity and cost and so were only popular where high ...
For the first time a winch was fitted. This was regarded as essential for an artillery tractor and its powerful capabilities were often remarked upon through the AEC 850's career. [18] The winch had a horizontal drum behind the driver, with 350 feet of wire rope and a pull varying between 7.3 and 9.5 tons. [vii] [16]
The twin-cylinder steam engine could be used either to drive the plough winch or to drive the vehicle along, at a speed of up to 150 cm/min (5 ft/min). Although the machine weighed 30 tons complete with 6 tons of fuel, its ground pressure was only 869 kg/m 2 (178 lb/sq ft), considerably less than a man.
Front of a MAN-based fire engine with a built-in winch, e.g. for towing damaged cars after an accident. A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable").
Hand crank for a winch on a sailboat - commonly referred to as a winch handle. A crank is an arm attached at a right angle to a rotating shaft by which circular motion is imparted to or received from the shaft. When combined with a connecting rod, it can be used to convert circular motion into reciprocating motion, or vice versa. The arm may be ...