It never occurred to me to look at what the semi-con vendors are already providing; wading through their data-sheets will be a big job, but should give some real insight.
That Swedish slot-car road; are they serious, or is that just a "cold zone" joke that us warm wimps don't get??? The only big difference between that and overhead wires that have been powering city trolleys for about 100 years is that the exposed live electric conductor to tap is right down on the ground. Besides the problems of water and crud getting into it, it is right there for every species of animal, endangered or not, to get fried (including humans). Roads with inductive power transfer would eliminate those problems, but I think the efficiency is too low to be practical; the air gap has to be large enough for real-life roads.
I understand now that the motor shaft sheared/twisted off, there is probably supposed to be a spline on the end of it; but I am still puzzled as to why. I think there must be a flaw in the motor-controller to allow driving/braking of the motor so severe that the shaft failed. Or, the shafts are defective in design/material/manufacture. I don't see much fillet in that groove of the shaft where it failed! One old trick is to have a female spline in the motor with a short male-to-male spline shaft coupler that is deliberately weak and will twist off as an overload "fuse". Make it cheaper and easier to replace than a whole motor.
That Swedish slot-car road; are they serious, or is that just a "cold zone" joke that us warm wimps don't get??? The only big difference between that and overhead wires that have been powering city trolleys for about 100 years is that the exposed live electric conductor to tap is right down on the ground. Besides the problems of water and crud getting into it, it is right there for every species of animal, endangered or not, to get fried (including humans). Roads with inductive power transfer would eliminate those problems, but I think the efficiency is too low to be practical; the air gap has to be large enough for real-life roads.
I understand now that the motor shaft sheared/twisted off, there is probably supposed to be a spline on the end of it; but I am still puzzled as to why. I think there must be a flaw in the motor-controller to allow driving/braking of the motor so severe that the shaft failed. Or, the shafts are defective in design/material/manufacture. I don't see much fillet in that groove of the shaft where it failed! One old trick is to have a female spline in the motor with a short male-to-male spline shaft coupler that is deliberately weak and will twist off as an overload "fuse". Make it cheaper and easier to replace than a whole motor.
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