The Sharopoyezd, meaning ball bearing train and also known by the acronym ShELT, was a Soviet attempt in the 1930s to build a high speed rail system that ran not on conventional iron rails but on a single large concave rail made of concrete.
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Sharopoyezd (Wikipedia)
In Field: Mechanical Engineering, Lead sectionQuote, In Field: Mechanical Engineering, Lead section
The Sharopoyezd (Russian: Шаропоезд; literally "ball-bearing train"), also known as ShELT (Russian: ШЭЛТ, acronym for шаро-электро-лотковый транспорт, "ball-bearing electric trough transport") was a Soviet attempt to develop a high-speed rail system in the 1930s.
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