1. manufacturing process: hg200 is manufactured by casting process, and hg400 flywheel is manufactured by assembly process.
2. Speed change: hg200 adopts the traditional chain speed change, while hg400 adopts the brand-new patented hpr hybrid technology, which can automatically adjust the output torque according to the vehicle speed during the movement, realize accurate control, improve the gear meshing, and further improve the climbing performance and flat speed.