Note the use of electric vehicles: a bicycle the fastening screw nut should be tightened, not loose and fall off. 2, all rotating parts should be flexible operation, may not have stuck, stay stiff phenomenon. Such as: front and rear wheels should be rotating flexible, and should not be jumping up and down and side to side, will have to stop when the wheels should do before and after a brisk three-wheeled electric car swing, can not suddenly stop. Turning left handlebar should be flexible and comfortable, pedal crank shaft and should be tightened, not loose each other, and flexible rotation. 3, shift the car in the right gear speed range strain, shift position should be clear, there is not a neutral middle. 4, the chain should be elastic fit, flexible operation. Forward Reverse repeatedly shaken by hand crank sprocket Zhengzhou three electric cars, chains flexible operation, not a chain and jump off phenomenon. Note the use of electric vehicles: 9, various parts of the switch is sensitive and reliable. 10, steady speed, and reliability. Slowly turn the handle speed, the motor should be a smooth start, acceleration, after the release handle, the handle can be quickly reset, even slow down the motor. 11, power brakes fast and reliable. Turn the speed control handle, three-wheeled electric car motor running after modification, after pinch brake brakes, the motor can instantly power, if power display, you can see the display back to zero. 12, the battery easy disassembly. The weight of lead-acid batteries generally about 13.5kg, due to the dismantling every day, so the location of the battery must be suited to their body. Three-wheeled electric car conversion, three-wheeled electric car, White Dragon, White Dragon machinery provided by Shandong Machinery Limited. White Dragon Shandong Machinery Co., Ltd. (www.bailonggrp.com) strong, credible, Shandong Linyi bicycles, tricycles and accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the White Dragon machinery and you hand into the brilliant, for a better future!