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Post by 90GTVert on Sept 19, 2011 8:55:22 GMT -5
139QMB (GY6 50) Displacement ChartBore | Stock Stroke (41.4mm) | 44mm Stroker
| 39mm | 49.46cc | 52.56cc | 44mm | 62.95cc | 66.90cc | 47mm | 71.83cc | 76.34cc | 50mm | 81.29cc | 86.39cc | 51mm | 84.57cc | 89.88cc | 52mm | 87.92cc | 93.44cc | 52.4mm | 89.28cc | 94.89cc |
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Post by speedy1125 on Oct 13, 2011 5:01:18 GMT -5
Engines tested using stock airboxes, jetting and stock transmission parts. | · Diameter of Cylinder Bore(mm) | 39 | 44 | 47 | 50 | | · Displacement(cc) | 49.5 | 63.1 | 72 | 81.5 | | · Rated power output and Rotational Speed (HP/RPM) | 2.8/7500 | 3.75/7500 | 4.15/7500 | 4.55/7500 | | · Max. Power output and Corresponding Rotational speed(HP/RPM) | 3.35/8000 | 4.15/8000 | 4.42/8000 | 5.09/8000 | | · Max Torque and Corresponding Rotational Speed(FT-LBS/RPM) | 2.2/6000 | 2.9/6500 | 3.17/6500 | 3.5/6500 | | · Min. Stable Rotational Speed(RPM) | 1600± 100 | 1600± 100 | 1600± 100 | 1600± 100 |
Its from the Chongqing Huashe Import & Export Co., Ltd. of Chongqing China. They mass produce engines for scooter manufacturers in China and also crate motors to North America, South America, Eastern Europe, Southeast Asia, Oceania, Western Europe. I had to convert kw to hp and newton meters (nm) to ft.lbs |
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Post by speedy1125 on Nov 12, 2011 23:16:17 GMT -5
| Model | GS1P52QMI-2 | GS1P57QMJ-2 | GS1P50QMG-2 | | Cylinder Bore (mm) | 52.4 | 57.4 | 50.0 | | Displacement (cc) | 124.6 | 149.6 | 97.2 | | Nominal power(hp/rpm) | 7.5097/7500 | 8.3143/7500 | 6.0346/7500 | | Max power(hp/rpm) | 8.0461/8000 | 8.8507/8000 | 6.4369/8000 | | Max Torque(ft.lbs/rpm) | 5.75/6500 | 6.78/6500 | 4.27/6500 | | Minimum Idle(rpm) | 1600±100 | 1700±100 | 1700±100 |
Engines tested using stock jetting, airboxes and other parts. Information provided by: Growsun Import & Export Trade Co., Ltd. Xiazhuang Industrial District,Wuxi,Jiangsu China |
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