| 词条 | Yamaha RD250 |
| 释义 |
| name = Yamaha RD250 |image = | aka = Yamaha RZ250 | manufacturer = Yamaha Motor Company | production = 1973–1987 | predecessor = | successor = Yamaha TZR250 | parent_company = | class = standard | engine = {{cvt|250|cc|abbr=on}}, two-stroke | related = Yamaha RD350, Yamaha RD350LC, Yamaha RZ350 }} The Yamaha RD250 is a {{cvt|250|cc|abbr=on}} two-stroke motorcycle produced by Yamaha Motor Corporation between 1973 and 1987. Four generations of RD (also known as the RZ250 in the Japanese and Australian markets) were produced: the air-cooled models from 1973 up to 1979, and from 1980 until 1987 the liquid cooled models; known as the RD250LC, RD250LC-II and RD250 YPVS. The name RD stood for Race Developed. The standard bike weighed 152 kg dry and had a 247cc 2-stroke twin engine that produced 30 hp.[1] It had a 6 speed gearbox and chain final drive. In 1981 the UK government reduced the maximum cc for learners to 125[2], killing off the 250 cc motorcycle class in a stroke. References1. ^{{Cite news|url=https://www.bikerandbike.co.uk/yamaha-rd250-classic-bike/|title=The RD 250. This is what the fuss was about {{!}} Biker and Bike|date=2017-02-14|work=Biker and Bike|access-date=2018-11-30|language=en-GB}} {{motorcycle-stub}}2. ^{{Cite web|url=https://www.gov.uk/government/publications/history-of-road-safety-and-the-driving-test/history-of-road-safety-the-highway-code-and-the-driving-test|title=History of road safety, The Highway Code and the driving test|website=GOV.UK|language=en|access-date=2018-11-30}} 3 : Yamaha motorcycles|Two-stroke motorcycles|Motorcycles introduced in 1973 |
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