Ducati 250 Scrambler (1967-75) vs Ducati 900SS (1999-00) vs Ducati 400SS Junior (1991-98)
Comparison technical specifications
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| Make: | Ducati | Ducati | Ducati |
| Model: | 250 Scrambler | 900SS | 400SS Junior |
| Years: | 1967-75 | 1999-00 | 1991-98 |
| Engine: | Four stroke, single cylinder, Desmo SOHC, 2 valve, bevel gear-driven | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder, belt driven | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder. |
| Capacity: | 248.6 cc / 15.2 cu-in | 904 cc / 55.2 cu in | 398 cc / 24.3 cu in |
| Bore x Stroke: | 74 x 57.8 mm | 92 x 68 mm | 70.5 x 51 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 9.2:1 | 9.2:1 | 10.0:1 |
| Induction: | 1967-69:Dell'Orto SS1 27D 1970-72: Dell'Orto VHB26BD 1973-75: Amal 27 mm | Marelli CPU 1.5 | Mikuni B79 carburetor |
| Ignition: | Points and coil, 6V 30W generator | Marelli electronic | Kokusan electronic |
| Battery: | SAFA 3L3 13.5 Ah | 12V 16Ah | 12V 16Ah |
| Starting: | Kick | Electric | Electric |
| Max Power: | 14.1 kW / 19 hp @ 7500 rpm | 58.3 kW / 80 hp @ 7500 rpm (at rear tyre: 57.5 kW / 78.2 hp @ 7700 rpm ) | 30.9 kW / 42 hp @ 10000 rpm |
| Primary Drive Ratio: | 2.500:1 | 1.84:1 (32/59) | 2.264:1 (34/77) |
| Transmission: | 5 Speed | 6 Speed | 6 Speed |
| Gear Ratios: | 1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1 | 1st 2.466 / 2nd 1.764 / 3rd 1.350 / 4th 1.091 / 5th 0.958 / 6th 0.857:1 | 1 st 3.071 / 2nd 2.111 ./ 3rd 1.590 / 4th 1.280 / 5th 1.074 / 6th 0.931:1 |
| Final Drive: | Chain | Chain | Chain |
| Final Drive Ratio: | 3.000:1 | 2.666:1 (14/40) | 3.210:1 (14/45) |
| Front Suspension: | Marzocchi hydraulic telescopic fork, 35 mm | 43mm Showa GD 131 upside-down forks, preload, compression and rebound adjustable | Marzocchi inverted telescopic fork, 40USD/E |
| Rear Suspension: | Swingarm, Marzocchi dual shocks, 3-way adjustable | Showa GD 132 progressive linkage monoshock, preload, compression and rebound adjustable | Cantilever swingarm, Marzocchi PBS1R monoshock, preload and rebound damping |
| Front Brakes: | 180mm Drum | 2 x 320 mm Discs, 4 piston calipers | Single 320 mm disc |
| Rear Brakes: | 160mm Drum | Single 245 mm disc, 2 piston caliper | Single 245 mm disc |
| Front Tyre: | 3.50-19, Pirelli | 120/70 ZR17 | 130/60 VR17 |
| Rear Tyre: | 4.00-18, Pirelli | 170/60 ZR17 | 160/60 VR17 |
| Dimensions: | Length: 2120 mm / 83.5 in Width: 940 mm / 37.0 in Height: 1150 mm / 45.3 in | Length: 2030 mm / 79.9 in Width: 780 mm / 30.7 in Height: 1125 mm / 44.3 in | Length: 2020 mm / 79.5 in Width: 730 mm / 28.7 in Height: 1110 mm / 43.7 in |
| Wheelbase: | 1380 mm / 54.3 in | 1395 mm / 54.9 in | 1410 mm / 55.5 in |
| Seat Height: | 770 mm / 30.3 in | 800 mm / 31.5 in. | 750 mm / 29.5 in |
| Dry Weight: | 132 kg / 291 lbs | 188 kg / 414 lbs | 173 kg / 381 lbs |
| Fuel Capacity: | 11 Litres / 2.9 US gal / 2.4 Imp gal | 16 L / 4.2 US gal / 3.5 Imp gal | 17 L / 4.5 US gal / 3.7 Imp gal |