Ducati 125 Sport (1961-64)
The Ducati 125 Sport was a motorcycle produced between 1961 and 1964. It had a four-stroke, single-cylinder, bevel gear-driven OHC engine with a capacity of 124.4 cc. It had a compression ratio of 8.0:1 and was cooled by air. Lubrication was provided by a forced oil sump, and the induction came via a Dell’Orto carburetor. Ignition was battery and coil, using a 6V 40W generator with a Marelli CW260N spark plug and a SAFA 3L3 13.5 Ah battery. The bike had a kick start, four-speed transmission, wet, multi-plate clutch, and chain final drive. The maximum power of the Ducati 125 Sport was 7.5 kW / 10 hp at 8500 rpm.
The bike’s frame was a single tubular downpipe cradle, and the suspension was hydraulically damped telescopic forks by Marzocci at the front and a swingarm with dual shocks, three-way adjustable at the rear. The front and rear brakes were drum brakes. The front tyre had a size of 2.50-17 CEAT, and the rear tyre was 2.75-17 CEAT. The Ducati 125 Sport’s dimensions were length: 1910 mm / 72.2 in, width: 580 mm / 22.8 in, height: 920 mm / 36.2 in, and wheelbase: 1320 mm / 52.0 in, with a dry weight of 100.5 kg / 221 lbs. The bike had a fuel capacity of 16 L / 4.2 US gal / 3.5 Imp gal and had a top speed of 112 km/h / 69 mph.
Technical specifications:
Make Model: Ducati 125 Sport
Year: 1961 – 64
Engine: Four stroke, single-cylinder, OHC, bevel gear driven
Capacity: 124.4 cc / 7.6 cu in
Bore x Stroke: 55.2 x 52 mm
Compression Ratio: 8.0:1
Cooling System: Air cooled
Lubrication System: Forced oil sump
Induction: Dell’Orto UB20BS carburetor
Ignition: Battery and coil, 6V 40W generator
Spark Plug: Marelli CW260N
Battery: SAFA 3L3, 13.5 Ah
Starting: Kick
Max Power: 7.5 kW / 10 hp @ 8500 rpm
Primary Drive Ratio: 3.00:1
Transmission: 4 Speed
Gear Ratios: 1st 2.75 / 2nd 1.65 / 3rd 1.18 / 4th 0.97:1
Clutch: Wet, multi-plate
Final Drive: Chain
Final Drive Ratio: 2.750:1
Frame: Single tubular downpipe cradle
Front Suspension: Hydraulically damped telescopic forks, Marzocci
Rear Suspension: Swingarm, dual shocks, 3-way adjustable
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 2.50 – 17 CEAT
Rear Tyre: 2.75 – 17 CEAT
Dimensions: Length:1910 mm / 72.2 in Width: 580 mm / 22.8 in Height: 920 mm / 36.2 in
Wheelbase: 1320 mm / 52.0 in in
Dry Weight: 100.5 kg / 221 lbs
Fuel Capacity: 16 L / 4.2 US gal / 3.5 Imp gal
Top Speed: 112 km/h / 69 mph
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