How does Qian Jianglong 150- 19a motorcycle speed up quickly? Please introduce it in detail.

Qian Jianglong 19A has a heavy body and the engine is a jack bar machine. The speed-up performance of jack bar machine is relatively general, but that of Qianjiang Beijing is not strong. The appearance of this car is ok, the quality of the whole car is good, but the performance is not outstanding. Qian Jianglong 19C or Lamborghini with chain machines have slightly better performance.