Ducati 900 SS (1997) vs Ducati 125 Sport (1961-64) vs Ducati 748 Biposto (1997-98)
Comparison technical specifications
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| Make: | Ducati | Ducati | Ducati |
| Model: | 900 SS | 125 Sport | 748 Biposto |
| Years: | 1997 | 1961-64 | 1997-98 |
| Engine: | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valves per cylinder, belt driven | Four stroke, single-cylinder, OHC, bevel gear driven | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven |
| Capacity: | 904 cc / 55.2 cu in | 124.4 cc / 7.6 cu in | 748 cc / 45.6 cu in |
| Bore x Stroke: | 92 x 68 mm | 55.2 x 52 mm | 88 x 61.5 mm |
| Compression Ratio: | 9.2:1 | 8.0:1 | 11.5:1 |
| Cooling System: | Air cooled | Air cooled | Liquid cooled |
| Induction: | Mikuni BDST 38-B67 | Dell'Orto UB20BS carburetor | Weber I.A.W. CPU 1.6M |
| Spark Plug: | Champion RA6HC | Marelli CW260N | Champion RA 59GC |
| Ignition: | Kokusan electronic inductive discharge | Battery and coil, 6V 40W generator | Electronic |
| Battery: | 12V 16Ah | SAFA 3L3, 13.5 Ah | 12V 16Ah |
| Starting: | Electric | Kick | Electric |
| Max Power: | 61.8 kW / 84 hp @ 7000 rpm (rear tyre 53.7 kW / 73hp @ 8100 rpm) | 7.5 kW / 10 hp @ 8500 rpm | 72.1 kW / 98 hp @ 1100 rpm |
| Clutch: | Dry, multiplate | Wet, multi-plate | Dry, multi-plate, hydraulic control |
| Transmission: | 6 Speed | 4 Speed | 6 Speed |
| Primary Drive Ratio: | 2.000:1 (31/62) | 3.00:1 | 2:1 (31/62) |
| Gear Ratios: | 1st 2.466 / 2nd 1.764 / 3rd 1.350 / 4th 1.091 / 5th 0.958 / 6th 0.857:1 | 1st 2.75 / 2nd 1.65 / 3rd 1.18 / 4th 0.97:1 | 1st 2.466 / 2nd 1.765 / 3rd 1.400 / 4th 1.182 / 5th 1.043 / 6th 0.958:1 |
| Final Drive Ratio: | 2.466:1 (15/37) | 2.750:1 | 2.71:1 (14/38) |
| Final Drive: | Chain | Chain | Chain, 520 VL4 - 5/8" x 1/4" |
| Front Suspension: | 41 mm Showa fully adjustable inverted fork | Hydraulically damped telescopic forks, Marzocci | Inverted type, 43 mm diameter stanchions, Showa GD051, fully adjustable |
| Rear Suspension: | Progressive type with adjustable Showa GD monoshock | Swingarm, dual shocks, 3-way adjustable | Progressive linkage with adjustable monoshock, Showa GD052-007-02 |
| Front Brakes: | 2 x 320 mm discs | Drum | 2 x 320mm Discs, 4 piston calipers |
| Rear Brakes: | Single 245 mm disc | Drum | Single 220 mm disc, 1 piston caliper |
| Front Tyre: | 120/70-17 | 2.50 - 17 CEAT | 120/60 ZR17 |
| Rear Tyre: | 170/60-17 | 2.75 - 17 CEAT | 180/55 ZR17 |
| Dry Weight: | 183 kg / 403 lbs | 100.5 kg / 221 lbs | 202 kg / 441 lbs |
| Dimensions: | Length: 2020 mm / 79.5 in Width: 710 mm / 28.0 in Height: 1110 mm / 43.7 in | Length:1910 mm / 72.2 in Width: 580 mm / 22.8 in Height: 920 mm / 36.2 in | Length: 2050 mm / 80.7 in Width: 685 mm / 27.0 in Height: 1090 mm / 42.9 in |
| Wheelbase: | 1410 mm / 55.5 in | 1320 mm / 52.0 in in | 1410 mm / 55.5 in |
| Fuel Capacity: | 17.5 L / 4.6 US gal / 3.8 Imp gal | 16 L / 4.2 US gal / 3.5 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |
| Top Speed: | 219.4 km/h / 136.3 mph | 112 km/h / 69 mph | 248.7 km/h / 154.3 mph |