Mototrans Ducati Road 250/350

Year of presentation : 1971

Years of manufacture : 1972-1976

Engine : 4-stroke, single-cylinder, air-cooled - bore x stroke 69 x 66 mm (narrow crankcase) - displacement 246.7 cc - compression ratio 10:1 - valve train by overhead camshaft with two valves in the cylinder head - wet sump with pump - Amal 375/27 carburettor - multi-disc clutch in oil bath - 5-speed gearbox - primary transmission by gears - secondary transmission by chain. Narrow crankcase.

Chassis : tubular steel frame - telescopic hydraulic front fork - swingarm rear fork with 2 hydraulic shock absorbers - Ø 180 mm drum front brake - Ø 160 mm drum rear brake - 3.25 x 18" front tyre - 4.00 x 18" rear tyre

Electrical system: The lighting is battery-powered, and the battery is recharged by a MOTOPLAT alternator flywheel through a rectifier. The battery�dry-charged�(6V, 16 Ah) is recharged by the magneto flywheel and the rectifier to power the parking lights (city lights and taillights) when the engine is off.

Dimensions: wheelbase 1320 mm - dry weight 122 kg - fuel tank 9 litres.

Performance : 25 HP at 9000 rpm - maximum speed 125 km/h in normal position - fuel consumption 3 litres/100 km.

Colour scheme: metallic orange-butane paint for the mudguard and tank, chrome for the headlight and tank panels, and black for the frame and swingarm. It also has a tool bag on the left side and a round air filter on the right. The Ducati logo is large, there are two decals on the sides of the tank, and the lettering is hollow.

The 350cc model is similar, but it features the new wide-crankcase engine with a piston bore and stroke of 76 x 75 mm, a 30 mm carburettor, and 4 HP more power, giving a total displacement of 340.2 cc. It also changes the air filter, switching from a horn filter to a bellows filter and a replaceable cartridge filter.

Clarifications: The 250cc Road model uses the older narrow-casing engine, while the 350cc Road model uses the newer wide-casing engine.

A Road version was manufactured in 1977 that included the 12-volt electrical system, the fuel tank from previous road versions, and stainless steel mudguards. It was quite aesthetically pleasing but apparently didn't sell very well.

Source: perso.wanadoo.es (archive)