TheHarley-Davidson RR250,also known as theHarley-Davidson 250RR,was aracing motorcycle,designed, developed and built byHarley-Davidson,conforming to the 250cc class regulations of theGrand Prix motorcycle racingworld championship, between 1972 and 1977.[4][5][6][7]
 | |
| Manufacturer | Harley-Davidson |
|---|---|
| Production | 1972–1977 |
| Engine | 246 cc (15.0 cu in)two-strokeair-cooled(laterwater-cooled)parallel twin engine |
| Bore/stroke | 56 mm × 50 mm (2.2 in × 2.0 in) |
| Compression ratio | 12.0:1 |
| Power | 49 hp (37 kW) @ 11,400 rpm (1972) 58 hp (43 kW) @ 12,000 rpm (1976) |
| Torque | 22.6 lb⋅ft (30.6 N⋅m) |
| Transmission | 6-speed,Chain |
| Suspension | 34mm Ceriani telescopic forks, twin Girling rear |
| Brakes | Drum brakes:230mm Ceriani 4-leading shoe (front), 230mm Ceriani twin leading shoe (rear) |
| Wheelbase | 1,250 mm (49 in) |
| Weight | 108–112 kg (238–247 lb) (dry) |
| Fuel capacity | 19 L (4.2 imp gal; 5.0 US gal) |
References
edit- ^"Harley Davidson RR250 Race Bike".May 2, 2013.
- ^"Aermacchi 250 GP Racer | A two-stroke Harley GP machine! – MCNews".23 May 2019.
- ^"Titled in the US – 1975 Harley-Davidson RR250".Bike-urious.November 29, 2017.
- ^"Harley Davidson RR-250 Road Racer".
- ^"1975 Harley-Davidson RR 250".philsellers.com.
- ^"Needs Some Work – 1974 Harley-Davidson RR250".Bike-urious.August 11, 2017.
- ^"This two-stroke screamer is not the typical Harley".www.goodwood.com.