Ducati 250 Diana Mark 3

 

 

 

Make Model.

Ducati 250 Diana Mark 3

Year

1962 - 64

Engine

Four stroke, single cylinder, Desmo SOHC, bevel gear-driven

Capacity

248.6 cc / 15.2 cu in
Bore x Stroke 74 x 57.8 mm
Compression Ratio 10.0:1

Induction

Dell'Orto SS1 27A carburetor

Ignition

6V 40W generator, magneto

Spark Plug

Marelli CW260A

Starting

Kick

Max Power

22.4 kW / 19.5 hp @ 8300 rpm

Primary Drive Ratio

2.500:1

Transmission

4 Speed

Gear Ratios

1 st 2.75 / 2nd 1.65 / 3rd 1.18 / 4th 0.97:1

Final Drive

Chain

Final Drive Ratio

2.647:1

Front Suspension

Ducati 31.5 mm hydraulic telescopic forks

Rear Suspension

Swingarm, dual chocks, 3-way adjustable

Front Brakes

180 mm Drum

Rear Brakes

160 mm Drum

Front Tyre

2.50 -18

Rear Tyre

2.75 -18

Dimensions

Length: 2000 mm / 78.7 in
Width:     580 mm / 22.6 in
Height:   1090 mm / 42.9 in

Wheelbase

1320 mm / 52.0 in

Seat Height

750 mm / 29.5 in

Dry Weight

110 kg / 242 lbs

Fuel Capacity 

17 L / 4.5 US gal / 3.7 Imp gal
Top Speed 177 km/h / 110 mph

When talking about Ducati bikes with some serious racing pedigree in the 60’s, the Ducati 250 Diana has to be mentioned because it was the very first sporting 250 model that every young man had his eyes set on.

Aesthetically, the racing heritage was pretty evident, specifically the addition of racy clip-on handlebars, handsome new styling, and crackling exhaust note. It also weighed just 265 pounds, making its 249 cc SHC single engine more than capable of being a barn burner.

The horsepower output from the 250 Diana Mark 3 reaches 24 ponies and was capable of blasting off at a top speed of 85 mph. Eventually, the 250 Diana’s success spawned itself into a new model - the Mark 3 Super Sport - one that was more than adept at producing a stout 30 horsepower and whilst initially continuing with the four speed transmission it was eventually mated to a five-speed transmission.