Comparison of Chang-Jiang BD 50QT-5D 125 and Keeway F-act 90 [S]ave
| Attribute |  Keeway F-act 90 × |  Chang-Jiang BD 50QT-5D 125 × |
|---|---|---|
| General | ||
| Production from (year) | 2007 | 2007 |
| Make | Keeway | Chang-Jiang |
| Model | Keeway F-act 90 | Chang-Jiang BD 50QT-5D 125 |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Displacement (cm³) | 91.3 | 125 |
| Power (kw) | 6.1 | 2.4 |
| Fuel consumption (l/100km) | 2.5 | 1.9 |
| Cooling system | - | Air |
| Torque (Nm) | 8.2 | - |
| Bore (mm) | 52 | 39 |
| Stroke (mm) | 43 | 41.5 |
| Gearbox | Automatic | - |
| Greenhouse gases | 58.0 CO2 g/km. (CO2 - Carbon dioxide emission) | 44.1 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Ignition | CDI | CDI |
| Clutch | Dry, centrifugal CVT system | centrifugal |
| Compression | 6.4:1 | 10.5:1 |
| Chassis | ||
| Front brakes | Single disc | Single disc. Hand operation, disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake). Hand operation, drum |
| Front tyre | 120/70-12 | 3.5-10 |
| Rear tyre | 130/70-12 | 3.5-10 |
| Other | ||
| Starter | - | Electric & kick |
| Dimensions | ||
| Wheelbase (mm) | 1,270 | 1,300 |
| Dry weight (kg) | 87 | 90 |
| Power/weight ratio | 0.0701 | 0.0267 |
| Overall height (mm) | 1,100 | 1,085 |
| Overall length (mm) | 1,800 | 1,857 |
| Overall width (mm) | 700 | 670 |
| Ground clearance (mm) | 90 | 110 |
| Performance | ||
| Top speed (km/h) | 80 | 45 |
| Fuel capacity (l) | 4.8 | 6 |
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