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There were eleven models in four lines of lawn and garden tractors by 1974: the 8 hp (6.0 kW) "economy" A Series with standard 32-inch mower and electric or recoil start, the "compact" B Series with a four-speed or automatic transmission, the C Series offering four models (the C-120 and C-160 automatic, and the C-100 and C-160 8-speed and the ...
Chain drive was the main feature which differentiated the safety bicycle introduced in 1885, with its two equal-sized wheels, from the direct-drive penny-farthing or "high wheeler" type of bicycle. The popularity of the chain-driven safety bicycle brought about the demise of the penny-farthing, and is still a basic feature of bicycle design today.
Direct-drive systems are characterized by smooth torque transmission, and nearly-zero backlash. [ 9 ] [ 10 ] [ 11 ] The main [ citation needed ] benefits of a direct-drive system are increased efficiency (due to reduced power losses from the drivetrain components) and being a simpler design with fewer moving parts.
A cone CVT varies the drive ratio by moving a wheel or belt along the axis of one or more conical rollers. The simplest type of cone CVT, the single-cone version, uses a wheel that moves along the slope of the cone, creating variation between the narrow and wide diameters of the cone. Some cone CVT designs use two rollers.
The large disk closer to the top is connected to the engine, the smaller one drives the wheels via chains (missing here). A friction drive [1] [2] or friction engine is a type of transmission that utilises the static friction of two smooth surfaces (instead of contact pressure of meshing teeth) to transfer torque between two rotating parts.
600: Chain drive, 6 horsepower (4.5 kW) Briggs & Stratton engine, double-jackshaft, Climb-Away transmission, lighting system. 610: Chain drive. Similar to 600, except with a 12-inch (300 mm) rear wheel. 665: Chain drive. Similar to 600, except with full suspension. 666: Chain drive. Included 12-inch (300 mm) rear wheel and full suspension with ...
It is a stepless, fully-automatic transmission, consisting of a V-shaped drive-belt, and two pulleys, each of two cones, whose effective diameter can be changed so that the "V" belt runs nearer the spindle or nearer the rim, depending on the separation of the cones. These are synchronized so that the belt always remains at the same optimal tension.
Roller chain and sprocket The sketch of roller chain, Leonardo da Vinci, Codex Atlanticus. Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles.