Comparison of Chang-Jiang BD 125T-3 and Yamaha U7E 1973 [S]ave
| Attribute |  Chang-Jiang BD 125T-3 × |  Yamaha U7E 1973 × |
|---|---|---|
| General | ||
| Production from (year) | 2007 | 1973 |
| Make | Chang-Jiang | Yamaha |
| Model | Chang-Jiang BD 125T-3 | Yamaha U7E |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | - | Carburettor |
| Displacement (cm³) | 125 | 72 |
| Power (kw) | 5.7 | 3.6 |
| Fuel consumption (l/100km) | 2.1 | - |
| Cooling system | Air | - |
| Transmission type,final drive | Belt | Chain |
| Torque (Nm) | - | 6.4 |
| Bore (mm) | 52.4 | 47 |
| Stroke (mm) | 57.8 | 42 |
| Greenhouse gases | 48.7 CO2 g/km. (CO2 - Carbon dioxide emission) | - |
| Ignition | CDI | - |
| Clutch | centrifugal | - |
| Compression | 9.2:1 | 6.8:1 |
| Chassis | ||
| Front brakes | Single disc. Hand operation, disc | - |
| Rear brakes | Expanding brake (drum brake). Hand operation, drum | - |
| Front tyre | 3.5-10 | - |
| Rear tyre | 3.5-10 | - |
| Other | ||
| Starter | Electric & kick | Electric & kick |
| Dimensions | ||
| Wheelbase (mm) | 1,232 | 1,175 |
| Dry weight (kg) | 111 | 77 |
| Power/weight ratio | 0.0514 | 0.0468 |
| Overall height (mm) | 1,080 | 1,005 |
| Overall length (mm) | 1,860 | 1,840 |
| Overall width (mm) | 670 | 645 |
| Ground clearance (mm) | 110 | 135 |
| Performance | ||
| Top speed (km/h) | 80 | 85 |
| Fuel capacity (l) | 5 | 4.5 |
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