Ducati 175 Sport (1957-61) vs BMW R 18 Roctane (2023)
Comparison technical specifications
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| Make: | Ducati | BMW |
| Model: | 175 Sport | R 18 Roctane |
| Years: | 1957-61 | 2023 |
| Engine: | Four stroke, single cylinder, SOHC, shaft and bevel gear driven 2 valve per cylinder | Four stroke, two cylinder horizontally opposed Boxer, Pushrod-actuated OHV with two camshafts, 4 valves per cylinder |
| Capacity: | 175.4 cc / 10.7 cu in | 1802 cc / 110 cu-in |
| Bore x Stroke: | 62 x 57.8 mm | 107.1 X 100 mm |
| Compression Ratio: | 8.5:1 | 9.6:1 |
| Induction: | 1957 - 59: Dell'Orto MB22.5B carburetor 1960 - 61: Dell'Orto MB22B / UBF24BS carburetor | Fuel injection, 48 mm Throttle valves |
| Battery: | 6V, 13.5Ah | 12/26 V/Ah maintenance-free |
| Starting: | Kick | Electric, 1.5 kW |
| Max Power: | 10.4 kW / 14 hp @ 8000 rpm | 67 kW / 91 hp @ 4750 rpm |
| Clutch: | Multi wet plate, wet | Hydraulically activated single-disc dry clutch |
| Transmission: | 4 Speed | Constant-mesh 6-speed |
| Gear Ratios: | 1st 2.75 / 2nd 1.65 / 3rd 1.18 / 4th 0.97:1 | 1st 2,438 / 2nd 1,696 / 3rd 1,296 / 4th 1,065 / 5th 0,903 / 6th 0,784 |
| Final Drive: | Chain, | Shaft, Final Drive 3.091 |
| Frame: | Single cradle tubular frame | Construction type Double-loop steel tube frame |
| Front Suspension: | Hydraulic telescopic fork, Mazocchi | 49 mm Telescopic fork, Non-adjustable |
| Rear Suspension: | Swingarm, dual shocks, 3-way adjustable | Cantilevered spring-preload adjustable shock |
| Front Brakes: | Drum, full aluminium, 180 mm | 2 X 300mm discs |
| Rear Brakes: | Drum, full aluminium, 160 mm | Single 300mm disc |
| Front Tyre: | 2.50 -18 CEAT | 120/70 B21 |
| Rear Tyre: | 2.75 -18 CEAT | 180/55 B18 |
| Dimensions: | Length: Sport: 1950 mm / 76.8 in / T: 1980 mm / 78.0 in Height: 960 mm / 37.8 in | Length: 2615 mm / 103 in Width: 953 mm / 37.5 in with mirrors |
| Seat Height: | 750 mm / 29.5 in | 720mm / 28.3 in |
| Fuel Capacity: | 17 L / 4.5 US gal / 3.7 Imp gal | 16 Litres / 4.2 US gal |