Positioned in Chang-Jiang's scooter motorcycle lineup, the 2007 Chang-Jiang BD 50QT-4A pairs a 49 cc (3 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 3.4 HP (2.4 kW) at 7,000 rpm. Internal engine geometry specifies a bore and stroke of 39.0 x 41.5 mm (1.5 x 1.6 inches) with a 10.5:1 compression ratio.
On the scales, the BD 50QT-4A measures 75 kg (165 lbs) dry. Rider ergonomics and chassis geometry center around a 1,200 mm (47.2 in) wheelbase engineered for quick, flickable steering geometry. The 4-liter (1.1 US gal) fuel tank paired with a rated consumption of 1.9 L/100 km provides an estimated theoretical range of roughly 211 km (131 miles) between fill-ups, while factory top speed is listed at 45 km/h (28 mph).
Theoretical Range
~211 km (131 mi)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power3.4 HP (2.4 kW)) @ 7000 RPM
Compression10.5:1
Bore x Stroke39.0 x 41.5 mm (1.5 x 1.6 inches)
IgnitionCDI
CoolingAir
Performance
Top Speed45.0 km/h (28.0 mph)
Fuel Consumption1.90 litres/100 km (52.6 km/l or 123.80 mpg)
Greenhouse Gases44.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
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Weight
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Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
