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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.
DieHard is an American brand of automotive battery and parts owned by Advance Auto Parts and sold exclusively at Advance, Carquest and Sears stores. Advance bought the DieHard brand from Sears in December 2019. [1] The brand dates to 1967, having been developed by Globe-Union Battery for Sears.
These engines use an electrically heated glow plug to ignite the fuel/air within the cylinder on start-up. Once running the battery is disconnected and ignition is similar to a diesel engine. The self ignition is due to the heat produced from the compression of the air/fuel mix, and the catalytic reaction between the platinum element in the ...
The original Model 29 was superseded by the Model 29–1 in 1960, with modifications made to the ejector-rod screw. The Model 29-2 replaced it the following year, with one screw that had secured the cylinder-stop spring being deleted. The barrel length was shortened from 6 + 1 ⁄ 2 to 6 inches (170 to 150 mm) in 1979. These two versions are ...