Ducati 250 Mark 3 (1964-67)

The Ducati 250 Mark 3 motorcycle was produced between 1964-67 and had a four-stroke, single cylinder, Desmo SOHC, bevel gear-drive engine with a capacity of 248.6cc. The compression ratio was 10:1, and it was air-cooled with induction provided via a Dell’Orto carburetor. The ignition system varied over time, producing 6V 60W. It had a wet, multi-plate clutch and a 5-speed transmission. The bike’s frame was a single downtube open frame with large diameter backbone tube. The front suspension was hydraulic telescopic fork, and the rear suspension was a swingarm with dual shocks. The front and rear brakes were drums with 180mm and 160mm diameters. The top speed was 177 km/h or 110 mph, and it had a fuel capacity of 13 L. The bike’s dry weight was 110 kg or 243 lbs in 1964 and 112 kg or 247 lbs starting in 1965. Overall, the Ducati 250 Mark 3 was a powerful and lightweight motorcycle, with a top speed to match, produced over a four-year period in the mid-1960s.

Technical specifications:

Make Model: Ducati 250 Mark 3

Year: 1964 – 67
Engine: Four stroke, single cylinder, Desmo SOHC, bevel gear-drive
Capacity: 248.6 cc / 15.2 cu in
Bore x Stroke: 74 x 57.8 mm
Compression Ratio: 10:1
Cooling System: Air cooled
Induction: 1964: Dell’Orto SS1 27A carburetor 1965 onwards: Dell’Orto SS1 29A carburetor
Ignition: 1964-66: 6V 60W generator 1967: 6V 60W
Spark Plug: Marelli CW260N
Starting: Kick
Max Power: 22.4 kW / 30 hp @ 8000 rpm
Clutch: Wet, multi-plate
Primary Drive Ratio: 2.500:1
Transmission: 5 Speed
Gear Ratios: 1st 2.53 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1
Final Drive: Chain
Final Drive Ratio: 1964: 18/43 1965 onwards: 18/40
Frame: Single downtube, open frame with large diameter backbone tube
Front Suspension: Hydraulic telescopic fork, Ducati 31.5 mm
Rear Suspension: Swingarm, dual shocks, Marzocchi
Front Brakes: Drum, 180 mm
Rear Brakes: Drum, 160 mm
Front Tyre: 2.50-18
Rear Tyre: 2.750-18
Dimensions: Length: 2000 mm / 78.7 in Height 1964: 1090 mm / 42.9 in Height: 1965 onwards: 1070 m / 42.1 in
Wheelbase: 1964: 1320 mm / 52 in 1965 onwards: 1350 mm / 53.1 in
Seat Height: 750 mm / 29.5 in
Dry Weight: 1964: 110 kg / 243 lbs 1965 onwards: 112 kg / 247 lbs
Fuel Capacity: 13 L / 3.4 US gal / 2.9 Imp gal
Top Speed: 177 km/h / 110 mph