Italian Motorcycles


From 1952, Rumi built the SuperSport model of its twin for road racing with two Dell'Orto carburettors mounted vertically above the engine and its own design of bottom-link front forks. The racing Rumis were developed by former FN and Saroléa designer Salmaggi, whose tuned version of the 125cc Super Sport motor produced 8 HP at 7,000 rpm and was good for 72 mph.


Engine: Twin cylinder 2-stroke

Bore & stroke: 42 x 45 mm

Compression ratio: 10.5:1

Engine Capacity: 124.68cc

Maximum power: 9 h.p. @ 7.300 rpm

Electrical System: Nassetti magneto, CEV 105 headlight, CEV tail light

Carburettor: Dell'Orto UA 18

Cooling system: Air cooled

Transmission: Gear primary, chain final

Clutch: Cable operated with multiple wet disk

Gearbox: 4-Speed foot-change

Starter: Kick-starter

Throttle: Cable operated

Frame type: Lightweight steel tubing

Front suspension: Telescopic forks

Rear suspension: Plunger

Front Brake: Drum, full-width SLS Ø 140 mm

Rear Brake: Drum Ø 160 mm

Wheelbase: 1,250 mm

Front Tyre: 2.37 x 21 in.

Rear Tyre: 2.50 x 19 in.

Fuel tank capacity: 13 litres (18 litres on request)

Fuel consumption: 3.4 litres per 100 Km

Top speed: 115 km/h

Instrumentation: VDO speedometer 140 Km/h

Weight: 84 kg

Riding position: 1st series with cantilever saddle, second series with leather dual seat

List price at that time: 235.000 lire ex-works

Motor Kampioen magazine: Volume 4, no. 10, 7 February 1953, pp 188-189

Source: Hessink's NL

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