Electric Vehicle Purchase Matters Needing Attention

1. The screws and nuts that are fastened to the bicycle should be tightened, and should not be loosened or fallen off.

2. All rotating parts should operate flexibly, and there should be no jamming or sluggishness. For example, the front and rear wheels should rotate flexibly, and should not swing left and right and jump up and down. When the wheels are about to stop, they should be able to swing briskly back and forth and not stop suddenly. The handlebar should be flexibly rotated left and right, and the pedal shaft and the crank should be fastened without loosening each other, and the rotation should be flexible.

3. The shifting gear should be correct in the shifting range, the shifting position should be clear, and there should be no neutral gear in the middle.

4. The chain should be tight and suitable, and the operation should be flexible. Shake the crank sprocket forward and reverse repeatedly by hand, the chain runs flexibly, and there should be no chain skipping and falling off.

5. Hold the front and rear parts of the saddle with both hands, press down the front end of the saddle with one hand, and the front end of the saddle must not collapse. Then turn the saddle horizontally with both hands, and the saddle should not turn.

6. Selection of brakes and braking system: Hold the handlebars with both hands, apply the left and right brakes while pushing and pulling the bicycle forward and backward, the wheels should not rotate at this time; release the handle, the braking system should be able to reset quickly.

7. The surface of each component should be clean, free of stains and rust, and the trademark decals should be complete and clear, without sharp burrs, etc. For example, the edges of the mudboard and the chain cover should not feel sticky, and the ends of the steel ropes such as brakes should be protected. sets etc.

8. Observe the grades or labels of the parts. Generally speaking, good parts are marked with obvious trademark marks and clear and beautiful patterns, while inferior parts are rarely marked or rough.

9. The switch action of each part is sensitive and reliable.

10. The speed regulation is stable and reliable. Slowly turn the speed control handle, the motor should start and accelerate smoothly, after loosening the handle, the handle can be quickly reset, and the motor decelerates evenly.

11. Brake power off quickly and reliably. Turn the speed control handle, after the motor runs, the motor can be powered off immediately after the brake is applied. If there is a power display, you can see that the display returns to zero.

12. The battery is easy to disassemble and assemble. The weight of the lead-acid battery is generally about 13.5kg. Since it has to be disassembled and assembled every day, the position of the battery must be suitable for your body.