2. There are many ways to weave bicycle spokes, including direct radial weaving and tangent weaving. Simply put, radial weaving is the simplest and requires the shortest spokes, but the vibration from the ground will be directly transmitted to the body through the spokes and then to the rider.
After the car has been riding for a period of time, all parts should be inspected and adjusted to prevent parts from loosening and falling off, and proper amount of engine oil should be injected into the sliding parts regularly to keep lubrication. Once the vehicle is wet by rain or damp, the electroplated parts should be wiped clean in time, and then coated with a layer of neutral oil (such as household sewing machine oil) to prevent rust.
Extended data:
repair
1. Check the wheel hub: remove the front and rear wheels, and check whether there are cracks near the steel wire hole. If there are cracks, replace them immediately, turn the wheel hub shaft by hand, and then shake it up and down. If there is a gap or it is very loose, disassemble the hub shaft and clean up the oil inside.
2. Inspection center: Take off the chain, grab the crank and shake it left and right. If it shakes, lock the fixing screw. If it still shakes, adjust the center bearing. If you hear abnormal sound or other strange sounds, it means that the bearing is damaged and the center should be replaced.
3. Check the pedal: Remove the pedal, use an open-ended wrench of 15mm, and note that the left pedal has left teeth. Don't take it wrong. The pedal bearing does not need to be adjusted, but it still needs to be checked. If a box pedal is used, check whether its mechanism moves normally and is lubricated.