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Originally Posted by maxlobovsky
well assuming to motor limited 2+ motor robots get into a pushing match. Their current draw can sky rocket to over 450 amps. Now what i was imagining is this robot driving against a wall or something that locks the motors, that would put their draw at like nearly 600. I dont know the specific types of breakers used, but its possible to destroy stuff before something blows. if they dont have all the breakers working properly, they could probably melt even the 6 gauge wire itself pretty quickly.
Basically, i dont understand why anything more than a drill and an FP is needed because when running both at max power, the total current draw is already pushing 130 or so. Why design something that has a maximum power that you cant even utilize. Also, three motors must introduce a very large amount of ineffeciencies because of motor curves not matching.
Because of the proliferation of 2 and 3 drive systems, I must have something very wrong in my analysis, or maybe i have discovered the key to the perfect drivetrain  |
maxlobovsky, your concerns are right that the "theoratical" current draw of their robot will be very high, coupled with their spikes, e.t.c it might even be 500 AMP. But will they ever hit tht point?, i mean if there are in a pushing match against someone who has a 2 motor drivetrain, whose fuse will reset first? the 2 motor drive train because it has more load on individual motors. The motor curves can be very accurately matched with some testing and good programming, basically making tables and having different values at different point for the motors so they run on almost same RPMs always. Also if there is a very minor different its unnoticeable, and because they are not using the transmission on their drill, all are raw DC motors, they will help each other, not overlaod each other.
Though it would be interesting to see them go against someone with 3 motor drive. They both might reset their breakers
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