The Rumi 250 Inline Four was constructed in 1960 by Giuseppe Fabbri, a former Gilera agent in Lugo di Ravenna, Italy.
The engine was created using two 125cc Moto Rumi two-stroke parallel twins. Only three of these machines were built.
Something of a legend, Fabbri created ten engines: two horizontal triples; three horizontal inline fours, two V-fours, one inline six and a V8.
Engine: Four cylinder 'in-line' 2-stroke
Bore & stroke:
Compression ratio: 10.5:1
Engine Capacity: 249.36 cc
Maximum power: 18 h.p.
Carburettor: Four Dell'Orto 18mm carburettors
Cooling system: Air cooled
Transmission: Gear primary, chain final
Clutch: Cable operated with multiple wet disc
Gearbox: 4-Speed gearbox, foot-change
Throttle: Cable operated
Frame type: Tubular and pressed steel
Front Suspension: Earles
Rear Suspension: Mono shock, Swingarm
Front Brake: Drum
Rear Brake: Drum
Front tyre: 2.25 x 18 in.
Rear tyre: 2.25 x 18 in.
Seat: Duck tail race seat
Fuel tank capacity: aprox. 20 litres
Source: Hessink's NL