Barrie we all appreciate your explanations of your method, thanks for spelling it out for us.
As I said I am not trying to contradict you at all. In fact you could throw an led on the rig while also making your calculations. I think what max is looking to see is when the machine slips from a few spikes per pass to one. You have been doing this long enough to know how the amps draw will "shift" down as the RPM increases and you go from three to two per pass , then one. The LED just gives a visual.
Max do you notices any "Shifting" on your machine as it spins up? You can hear it and observe it on the amp draw without the LEDs. As I said starting out this used to be much more noticable when running repulsion rather than attraction but you can notice in either.
*EDIT*
One other thought as I was reading the post. About the potentiometer, I have found that the wire wound variety work very well. I look for a 7 or 10 turn wire wound of 2 watt or so. They are not cheap but well worth the money. You get extremely precise adjustments and they hold up pretty well. You can burn them out if you push to much through them but on your setup I doubt it would happen. I have one on my 32 transistor 8 coiler with no issues.
As I said I am not trying to contradict you at all. In fact you could throw an led on the rig while also making your calculations. I think what max is looking to see is when the machine slips from a few spikes per pass to one. You have been doing this long enough to know how the amps draw will "shift" down as the RPM increases and you go from three to two per pass , then one. The LED just gives a visual.
Max do you notices any "Shifting" on your machine as it spins up? You can hear it and observe it on the amp draw without the LEDs. As I said starting out this used to be much more noticable when running repulsion rather than attraction but you can notice in either.
*EDIT*
One other thought as I was reading the post. About the potentiometer, I have found that the wire wound variety work very well. I look for a 7 or 10 turn wire wound of 2 watt or so. They are not cheap but well worth the money. You get extremely precise adjustments and they hold up pretty well. You can burn them out if you push to much through them but on your setup I doubt it would happen. I have one on my 32 transistor 8 coiler with no issues.
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