Yamaha SR250

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Yamaha SR250 (1st gen.)
Yamaha SR250 blue.jpg
ManufacturerYamaha Motor Company
Also calledExciter I (US)
Parent companyYamaha Corporation
Production1980–1984
ClassStandard
Engine249 cc (15.2 cu in) SOHC 2-valves per cyl. single
Bore / stroke75.0 mm × 56.5 mm (2.95 in × 2.22 in)
Compression ratio9.2:1
Top speed130 km/h (80 mph)[1]
Power21.0 bhp (15.7 kW) @ 8,000 rpm (claimed)[1]
Torque18.8 lb⋅ft (25.5 N⋅m) @ 6,500 rpm (claimed)[1]
Ignition typeTransistorized electronic ignition
TransmissionMultiplate wet clutch, 5-speed, chain
Frame typeSteel. Stressed member engine
SuspensionFront: telescopic fork, 140 mm (5.5 in) travel.
Rear:Swingarm, 84 mm (3.3 in) travel
BrakesFront: 159 mm (6.25 in) drum
Rear: 130 mm (5.2 in) drum
TiresYokohama. Front: 3.00-18
Rear: 120/80-16
Rake, trail27.5°, 120 mm (4.8 in)
Wheelbase1,340 mm (52.75 in)
DimensionsW: 710 mm (28.0 in)
Seat height740 mm (29.0 in)
Weight130 kg (287 lb) (½ tank)[1] (wet)
Fuel capacity10 l; 2.2 imp gal (2.7 US gal)[1]
Fuel consumption76 mpg‑US (3.1 L/100 km; 91 mpg‑imp)[1]

The Yamaha SR250 is a single cylinder motorcycle made by Yamaha Motor Company from 1980 to 1984 for the first generation, and since 2001 for the second generation. It shares styling with the larger Yamaha SR500. The first generation had a 249 cc (15.2 cu in) displacement and the second generation was 239 cc (14.6 cu in).

History[edit]

The SR250 was produced from 1980 to 1982 in the United States, as well as from 1982 to 2000 in Spain, in two versions. While it has stylistic similarities with its older brothers the SR500 and SR400, the SR250 is very much a commuter bike. In 1980 Cycle World's test of the SR250, called the Exciter I in the US with added high, cruiser style handlebars, found a standing 14-mile (0.40 km) time of 16.36 seconds at 122.89 km/h (76.36 mph), acceleration from 0 to 97 km/h (0 to 60 mph) of 11.5 seconds, and a top speed of 130 km/h (80 mph).[1] Braking distance from 60 to 0 mph (97 to 0 km/h) was 38 m (125 ft), and tested fuel consumption was 76 mpg‑US (3.1 L/100 km; 91 mpg‑imp), giving a range of 269 km (167 mi).[1]

2001 model[edit]

Yamaha SR250 (2nd gen.)
Yamaha SR250 (2nd gen.).jpg
ManufacturerYamaha
Production2001–
Engine239 cc (14.6 cu in) single, air cooled, four-stroke
Transmission5-speed sequential
RelatedYamaha SR500

In 2001, Yamaha released their most recent SR250 due to popular demand for reliable commuters. This model is modeled after the SR500. Despite engine capacity, the two bikes are essentially of the same overall design.

Notes[edit]

  1. ^ a b c d e f g h Girdler, Alan, ed. (August 1980), "Yamaha Exciter I SR250", Cycle World, Newport Beach, California: Hachette Filipacchi Media U.S., vol. 19 no. 8, pp. 67–70, ISSN 0011-4286

External links[edit]

Official website