What is correct reading for Sportsman 570 Stator test?
I asked you to butt in Latebird. Thanks for more confirmation on that. And your right about misinformation on YouTube and the internet in general. An overload of information often leads to confusion.I hate to butt in, but............
You tube is a good source of some very helpful information, butt....... Not everyone capable of making a video knows what they are talking about. You tube is a good source of mis-information too.
I have found videos that are so off base that I have asked for investigation of the vid and if proven incorrect to be removed. I cant say definitively that I have been responsible for the removal of certain videos, but most I have queried have been removed for inaccurate or misleading information.
The guy in the video is correct that dielectric grease is an insulator, but ask the same guy about water and he will probably tell you water is a conductor of electricity. What is water? Hydrogen and oxygen and neither one conducts electricity. I know of no combination of two non conductors mixed together resulting in a conductive substance, but contaminate any insulator with a conductive substance and the insulator now becomes a conductor. How good of a conductor is determined by contaminant.
Carbon is a conductor, not a good conductor, but mixed with some other materials and it becomes a very good conductor. Carbon resistor spark plug wires do not contain wire. They use Aramid fiber to resist stretching impregnated with carbon dust to conduct the spark from the coil to the spark plug. The carbon (which is not pure carbon) provided an electrically conductive conduit that somewhat resisted current flow causing the spark to delay and intensify. Because the spark was delayed, the voltage necessary to ionize the path of current flow was increased providing a stronger more intense spark.
Now the meter you have is cheap - I looked on line and could not find the meter's sensitivity or margin of error. I have 3 meters, a Micronta general purpose digital beater for the tool box, an OTC range selectable digital and a $600 Simpson lab grade analog meter. When I need an accurate indication, I turn to the Simpson. For stators, either of the digital's is adequate. I am not looking for the ohms of the windings - I am only concerned about continuity and opens - if each winding is continuous and not shorted to ground, it's generally fine, but I test both open circuit and closed circuit. Shorts between the windings are mostly undetectable with an ohmmeter, but hi pot the winding (high potential)(a fancy term for high voltage) and a short will reveal itself. Check the AC output of the winding when not connected to the rec/reg - normally about 50-90 volts - then check the AC voltage when connected to the rec/reg - voltage will generally be above 30 AC at 2500 RPM - if one pole is substantially less than the other two poles (say A-B = 25, A-C = 30 and B-C = 15) then one pole is shorted winding to winding internally and needs to be replaced. Open circuit will show only the potential, closed circuit shows the available potential. It's like a bad battery - shows 12 volts just sitting there, put a load on it (starter motor) and the voltage drops to 1 or 2 volts trying to run the motor - take the load off and the voltage slowly returns to 12 volts. Put it on a charger and it charges quickly, but it still will not run the motor.
You can accurately test the charging system with about any meter if you perform all the tests and don't rely on the values in the manual. They are just a guide. The only way you will get the same readings is if you use the same meter that was used to harvest the values and then it has to be at the same temperature and with the same length leads. With a good meter, the resistance will change with meter lead length and gauge. A good meter can be adjusted to compensate for the leads and connections
Now while dielectric grease is an insulator, it promotes clean solid connections - the metal to metal contact is not decreased using dielectric grease - as the contacts are pushed together, the grease eases insertion and then excludes air and water keeping the connection clean and dry. When I worked in the Environmental Laboratory at General Electric in Bloomington IL, we used dielectric grease on fuses in 600 volt million amp circuits to assure positive electrical contact and then used fuse block clamps designed to prevent the fuses from blowing out of the fuse block terminals when we purposely short circuited the device to test the resulting failure.
Although there is nothing the guy in the vid is totally inaccurate about, he is simply not factually accurate. For an unbiased summation on the use of dielectric grease, read this article Dielectric Grease - I will continue to fill electrical connectors with dielectric grease and let sleeping dogs lie.