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 |
