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OMC’s would be 4000 ohhm / .8 ohms = 5000
Yes step up is smaller on the cheapies I agree but magnetism/inductance laws were so confusing to me in tech school I gave tech school and went to work for the phone company at 17 ! …where everything worked with…. relays and tubes in the central offices
hey who knows the cheap primaries being 1.8 ohms may cause less current flow on the points when the magnetism field collapses , reducing arching and pitting ❗
Yes, of course your ratios are correct. I never multiplied mine by 1000 to equal out the KOhms units. 😳 . Still, the voltage step up is considerably lower with the HK coils. I really have no idea how much the extra resistance in the primary winding will have on the erosion of the points. It certainly could make a difference. I don’t know how to mathematically quantify that, but time will certainly give us some answers.
I also agree that the laws of magnetism and inductance are quite confusing. I went into mechanical engineering so there is a whole lot about that stuff I don’t know. I’m curious how these work in another motor. I only have one with them installed currently. The weak spark at low RPM "could" be related to something else particular to this motor. I have a couple others that need coils so I’ll try them in another and see if I have the same results. I will start a new topic and follow up since this one began and a cost per quantity thread. Stay tuned.
-Ben
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