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Andreas Stihl designed and hand built his first chainsaw in 1926. [5] The saw was electrically powered, and weighed about 48 kg (106 lb). [6] Stihl grew slowly initially, as the chainsaws came to the market about the same time as the Great Depression; with manpower cheap, and old two-man saws proven, there was no need for power saws.
Two-stroke chainsaws require about 2–5% of oil in the fuel to lubricate the engine, while the motor in electrical chain-saws is normally lubricated for life. Most modern gasoline-operated saws today require a fuel mix of 2% (1:50).
In Stihl Timbersports, the hot saw event sees competitors race to cut three cookies from a horizontal log. The first cut is going down, the second back up. The athletes have to be very strong and skilled, with chainsaws having a chain speed of 240 km/h, a weight of 27 kg, and engines typically having between 62 and 100 horsepower.
McCulloch Motors Corporation is an American manufacturer of chainsaws and other outdoor power tools.The company was founded in Milwaukee, Wisconsin, in 1943 by Robert Paxton McCulloch as a manufacturer of small two-stroke gasoline engines and introduced its first chainsaw in 1948, the Model 5-49.
The Continental O-190 (Company designations C75 and C85) is a series of engines made by Continental Motors beginning in the 1940s. Of flat-four configuration, the engines produced 75 hp (56 kW) or 85 hp (63 kW) respectively.
A typical turbocharged V8 diesel engine might have an engine power of 250 kW (340 hp) and a mass of 380 kg (840 lb), [1] giving it a power-to-weight ratio of 0.65 kW/kg (0.40 hp/lb). Examples of high power-to-weight ratios can often be found in turbines. This is because of their ability to operate at very high speeds.
In 1929, Andreas Stihl married Mia Giersch (1903-2002), [2] with whom he had four children, among them Hans Peter Stihl (born 1932) and Eva Mayr-Stihl (born 1935), who succeeded her father in managing the company and remaining Vorstand until 2002. [9] Stihl divorced his first wife in 1960, and married Hannelore Wegener-Doberg (1927-2009) the ...
The first test with a lawn mower powered by an engine was done in 1947. 1959 – Chainsaws As demand for bicycles, mopeds and motorcycles declined, forestry became increasingly important. The expertise in engines was utilized in new areas and the first chainsaw was produced in 1959.