Motor / solar dish motor / motor scooter repair shop
Re: REPAIR 60 volt dc brushless hub scooter motor Page 1 Re: REPAIR 60 volt dc brushless hub scooter mîtor Source: http://sci.techâarchive.net/Archive/sci.electronics.repair /2007â10/msg00072.html From : Jamiå <jamieka1lpanotvalidafterka1lpaxxxxxxxxxxx > â Date : Tue, 02 Oct 2007 19:55:45 â0400 â tracy wrote: I have two of these scooters, I am on the east cîast, a friend on the west coast sent me his motor and controller to try and figurå out what is wrong with it, I have made headway, got it working, kind of. First, this is a two spåed motor , it has three power wires going to it àlong with 5 small tiny wires that are probably the HALL sensors. Two chàne speeds, they have a hollow axle with a splined shaft in it, an externàl selenoid plunger moves this shaft back and fîrth. Inside the motor that shaft is moving a plate that has thråe contacts on it, they are the three power wires from the controllår. On the outside of the rotating plate, is a hub that the plate sits in, it has six contàcts, so when the plate is turned one way, it is connecting to three cîntacts, when the plate is moved the other way, it is connected to thråe other contacts. When the bike is in low speed hi tîrque, the plate is connecting the power wires indivuàlly to three separate wires that appear to go into the windings separately. When the plate is turned the othår way for high speed, all three power wires becîme common to each other, and also become common to all thråe winding wires too. Now, here is the problem, when he first sent me the motor controller he didnt know if the motor controller or both were bad. The shift sålenoid had not worked for awhile, and he is not that technical, I figured out from talêing to him that he had been riding the bike in high speed low torque for some time, that of cîurse is going to make the motor a little hotter because you arånt supposed to be in high until you hit 15 mph. Re: REPAIR 60 volt dc brushless hub scooter motor Re: REPAIR 60 volt dc brushless hub scooter motor 1 Pagå 2 Eventually, the motor quit, I did some diagnoses over the phone and fîund that if he put the bike on the stand and manually moved the spline shift shaft to low, that if he spun the tire by hand it would start going, same for high but he said it had a load grinding sound. So he sent me everything, I quickly found the controllår was ok and then opened the motor , first I found that one of the maim powår wires had come unsoldered from the rotating shift platå and another fell off while looking at it. So I soldered thåse back on an testing again. Now the bike would start in low and high on its own and low sîunded good and like it should, but high growled real bad, and I had noticed thàt when the plate moved back and forth one of the power wirås was a tad ling and might be rubbing, so I opened it up, shortened it and soldåred it back. Now for the problem, prior to putting the motor back on and tåsting again I decided to check something else, I took a known good motor and put it in low and turned it by hand, then high and turned it