I have gotten alot of input from Prochiro on how to get them most out of a rotor. and of course Ufo has stated a coil must come in around one ohm resistance. I try to fill up the rotor to get the most out of it. Using multifilar complicates the calculation but I am getting better at it. It gives you options. My motor was hot-running bc I made the wire thicker by going to 4 strands and I went longer since the rotor wasnt filling up on my first winding at 3 strands. But I ran out of room making the coil length shorter than I should and was coming in at around .7 ohms per coil when it was fully wound. My solution here is to go back to 3 strands and go longer, targetting about 1.33 ohms per coil to allow it run continuously and get no hotter than 120 degrees on 12v. I already have a dual stator motor of this type that is wound at around 1.3 ohms per coil, and that is how it runs. That is hot to the touch and I worry about it. I have this really good wiring guide that breaks down the resistance every which way, and since I don't have good multimeters, I am going strictly by calculation. So on this wiring guide, you may find what I am using, 32ga, 6' per ohm, and 3 strands at 24' will give 1.33 ohms. Perfecto!
This will go far to filling up my rotor. I probably should do prochiro's calculation, estimating the area of the inter-pole spacing and dividing by the strand area to find out how many winds it will take to fill them...I had been watching Ufo's vid on the imperial epic run, on the MAEM thread post 3132. And I just recently noticed one temp reading was 160+ degrees at the end of the run!!! Looks like the brushes. My question is, How hot should the motors be allowed to get? My little motors above, the whole motor will get to be 120 deg+ including the magnets. So not only do you have to worry about melting something, but also about the magnets overheating and losing their magnetism. Do you have a temp gauge? How hot is the A1-MoGen getting?





Planning ways to squeeze in 4 mosfets per board, as Dana suggested
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