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Douglas Mark III
 | |
| Manufacturer | Douglas Motorcycle Company, Bristol |
|---|---|
| Production | MkIII 1948–1949, Mk IV 1950, Mk V 1951 |
| Predecessor | Douglas T35 |
| Engine | 348.4 cc (21.26 cu in) horizontally opposed twin cylinder four stroke |
| Bore / stroke | 60.8 mm × 60 mm (2.39 in × 2.36 in) |
| Top speed | 70 miles per hour (110 km/h) |
| Power | 18 brake horsepower (18 PS; 13 kW) @ 4,500 rpm |
| Torque | 15 newton-metres (11 lbf⋅ft) @ 2,250 rpm |
| Transmission | Four-speed with chain final drive |
| Wheelbase | 1,463 millimetres (57.6 in) |
| Dimensions | L: 1,662 millimetres (65.4 in) W: 337 millimetres (13.3 in) |
| Seat height | 800 millimetres (31 in) |
| Weight | 300 pounds (140 kg) (dry) |
The Douglas Mark III is a British motorcycle designed and built by Douglas motorcycles in Bristol between 1948 and 1949.[1] The 350 cc flat twin engine in the Douglas Mark III was based on a Second World War electricity generator.[2] As well as the 1948-9 Douglas Mark III, Douglas also produced a Mark III "De Luxe", a Mark III Sports, and a rigid-framed motorcycle trials Competition version.[2]
- ^ Currie, Bob (1980). Great British Motorcycles of the Fifties. Hamlyn Publishing Group Ltd. ISBN 978-0-86363-010-1.
- ^ a b "A classic: The 1947 Douglas T35 Motorcycle". Retrieved 10 May 2009.
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