22 June. Monday 2026
Chang-Jiang BD 50QT-4A - 2007 Specifications and Reviews
The 2007 Chang-Jiang BD 50QT-4A is a lightweight 139cc scooter designed for urban commuters and budget-conscious riders seeking practical daily transportation. Its air-cooled single-cylinder engine delivers modest power suitable for city riding, while the compact dimensions and 75kg curb weight ensure easy maneuverability in congested traffic. Known for reliability and fuel efficiency, this model excels as an affordable entry-level scooter for beginners and casual riders.
2007
General information | |
| Category | Scooter |
| Year | 2007 |
| Model | Chang-Jiang BD 50QT-4A |
Engine and Transmission Specifications | |
| Cooling system | Air |
| Starter | Electric & kick |
| Ignition | CDI |
| Bore x stroke | 39.0 x 41.5 mm (1.5 x 1.6 inches) |
| Compression | 10.5:1 |
| Power | 3.35 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 139.00 ccm (8.48 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,200 mm (47.2 inches) |
| Overall width | 640 mm (25.2 inches) |
| Overall length | 1,655 mm (65.2 inches) |
| Overall height | 1,020 mm (40.2 inches) |
| Dry weight | 75.0 kg (165.3 pounds) |
| | |
Chang-Jiang BD 50QT-4A dimensions and frame | |
| Rear tyre dimensions | 3.00-10 |
| Front tyre dimensions | 3.00-10 |
Speed and acceleration | |
| Power/weight ratio | 0.0447 HP/kg |
| Top speed | 45.0 km/h (28.0 mph) |
Other specs | |
| Fuel consumption pr. 10 km (6.2 miles) | 1.90 litres (0.50 gallons) |
| Fuel capacity | 4.00 litres (1.06 gallons) |
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