Ducati 48/1 & 50/1 Brisk (48/1:1961-6650/1:1967)

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The Ducati 48/1 & 50/1 Brisk motorcycles were produced from 1961-1966 and 1967 respectively. They were two-stroke, single cylinder piston port engines with a capacity of 47.6 cc/2.9 cu in and a bore x stroke of 38 x 42 mm. The compression ratio was 6.3:1 until 1963 when it increased to 7:1. Cooling was air-cooled and Dell’Orto T4 12D1 was used for induction. The ignition system was a 6V 18W flywheel magneto and comes with Marelli CW 225N spark plug. The motorcycles had a max power of 1.0 kW/1.34 hp@4200 rpm, but after 1963, it increased to 1.1 kW/1.5 hp@5200 rpm. It had a pressed steel frame, telescopic fork front suspension, and swingarm dual shocks rear suspension. The front and rear brakes were both drum brakes with a size of 90 mm while the front and rear wheels were 2.00 x 18. The dry weight of the motorcycle was 45 kg/99 lbs for the 48/1 and 50 kg/110 lbs for the 50/1. The top speed was 40 km/h/25 mph.

Technical specifications:

Make Model: Ducati 48/1 & 50/1 Brisk

Year: 48/1: 1961 – 66 50/1: 1967


Engine: Two-stroke, single cylinder, piston port
Capacity: 47.6 cc / 2.9 cu in
Bore x Stroke: 38 x 42 mm
Compression Ratio: 6.3:1 (from 1963: 7:1)
Cooling System: Air cooled
Induction: Dell’Orto T4 12D1
Spark Plug: Marelli CW 225N
Ignition: 6V 18W flywheel magneto
Starting: Kick
Max Power: 1.0 kW / 1.34 hp @ 4200 rpm (from 1963: 1.1 kW / 1.5 hp @ 5200 rpm)
Clutch: Wet, multiplate
Transmission: Single speed
Final Drive: Chain
Frame: Pressed steel
Front Suspension: Telescopic fork

Rear Suspension: Swingarm, dual shocks
Front Brakes: Drum, 90 mm
Rear Brakes: Drum, 90 mm
Front Wheel: 2.00 x 18
Rear Wheel: 2.00 x 18
Dry Weight: 48/1: 45 kg / 99 lbs 50/1: 50 kg / 110 lbs
Top Speed: 40 km/h / 25 mph

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