Why electric motor for bicycle kit is widely used in ebike rather than car
Electric bicycles are not as good as we think closed, rainy weather often come, your electric bicycle by the harassment of rain? Electric bicycles belong to "household appliances", electric bicycles are afraid of water, driving in the water is easy to short-circuit burned parts, try not to ride in deep water, especially the 36V 250W electric bicycle motor, controller to protect!
The following focuses on the 250W electric bicycle motor into the water how to overhaul it?
1.The multimeter to the "on and off gear", measuring the motor three-phase line whether the motor is connected to the motor shell or resistance value shows that the motor inside the water. Water inside the motor leads to Hall conductor foot connected to electricity, resulting in "shaking" or the car does not go.
2.Disassemble the 250W electric bicycle motor. The prerequisite steps are, first of all, the screws to be disassembled for rust removal lubrication, to disassembly to help, so as not to rust forced demolition easy to slip silk! Let it "penetrate", disassemble smoothly.
3.Both sides of the motor end cover internal seals to remove. Because the 250W electric bicycle motor into the water will rust, motor shaft, motor bearing rust, disassemble the seal coated with spray rust remover, to be a better separation of the stator and rotor.
4.Clean up the motor end cover screws inside foreign objects. Disassembly of the motor end cover with motor line end, motor screws are generally more than six-pronged wire, there is a certain amount of sludge "injected" into the six-pronged wire inside, causing obstacles to demolition, you can use a sharp awl will be "foreign matter" clean in the demolition is much easier.
5.Separate the stator and rotor. Stator and rotor have a certain "magnetic" attraction, coupled with the end cover perimeter sealant on the separation of the stator have a certain "effort" to ensure that the perimeter of the motor end cover screws is all disassembled, uniform force pier hit the stator, not hard force disassembly, the motor cover is "aluminum", brute force will pier hit rotten, causing trouble. When the stator and rotor fast separation is not allowed to use the hand to "key" the stator, once the "suck back" magnetic force will be hand pinch injury.
6.Observe the internal details of the 250W electric bicycle motor. If there is water to clean out the water, it is best to dry thoroughly in the sun, if there is no sun can use a light bulb or hairdryer for "moisture", (prohibit the use of high temperature blowing Hall, to prevent heat Hall breakdown), special observation is Hall guide foot whether there is water or oxidation? To clean up and replace, in addition to observe whether the magnets let the water "bubble" expand off? Clean up the re-stained magnet sheet! And whether the bearings have "wobble", to replace.
7.Grinding and rust maintenance. Into the water 250W electric bicycle motor more or less will have rust, you can use "gauze" to clean up the rust, to remove the rust parts of the magnet sheet, stator slot piece, will clean up the "foreign matter" can use the air pump air blowing "run "to prevent obstruction of motor speed and sweeping. Make sure the bearings are not damaged please remove the oil seal and apply grease. Install the end cover oil seal on, if the oil seal is aging, please give replacement.
8.Install the 250W electric bicycle motor correctly. Motor end cover in order to close more tightly, please use sealant to seal the circumference of the sealant, so that water is "prohibited to enter", when the stator into the rotor "inside", please reverse the light pier motor shaft, better let the other end of the bearing into place, pier when the attention of the motor line does not "hit" injury, then use a rubber hammer with the circumference of the knock, according to the diagonal on the end cover wire, do not screw too tight, when the circumference of the motor wire on almost when the rubber hammer for a light knock, better "in place".
The most important thing to note is: the motor wire must be fixed in the frame with a wire harness, so as not to shock, or tire grinding to , the motor wire injury! Cause a short circuit break.
Electric bicycle closed again good, after the passage of time, the seal aging, bearing gap becomes large, in the water will also have water invasion.
The best way, try not to ride to the water when it rains, especially in deep water, maybe then in the water overall right, over time, the water is good into the difficult out, there will be injury motor, coil oxidation, bearing friction increases, Hall guides foot line corrosion, magnet rust demagnetization, etc. will hurt its service life!
