Why don t they make steam engines anymore?

Steam road vehicles were used for many applications. In the 20th century, the rapid development of internal combustion engine technology led to the demise of the steam engine as a source of propulsion of vehicles on a commercial basis, with relatively few remaining in use beyond the Second World War.



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But when the price of oil started to fall in the 1960s, and so-called 'dieselisation' began, it marked the beginning of the end for steam. Diesel engines were faster, easier to maintain, and cleaner.

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The last meter-gauge and narrow-gauge steam locomotives in regular service were retired in 2000. After being withdrawn from service, most steam locomotives were scrapped, though some have been preserved in various railway museums. The only steam locomotives remaining in regular service are on India's heritage lines.

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Puffing Billy is the world's oldest surviving steam locomotive, constructed in 1813–1814 by colliery viewer William Hedley, enginewright Jonathan Forster and blacksmith Timothy Hackworth for Christopher Blackett, the owner of Wylam Colliery near Newcastle upon Tyne, in the United Kingdom.

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Diesel engines were faster, easier to maintain, and cleaner. And on 12 August 1968, British Railways imposed a ban on all mainline steam traffic – though there were still some heritage services running, and some locomotives were used in industry until the 1980s.

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Big Boy No. 4014 is the world's largest operating steam locomotive.

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Steam engines CAN be more powerful than diesels. Steam engine have been built with 7000–8000 hp. They tend to be very heavy and very complicated with multiple driving axle articulated trucks.

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