Quote:
Originally Posted by nosaj2
While watching the live monitor in the Alltrax software, my motor never pulls more than 200 amps. Even going up hill.
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The max amps a motor can draw is inversely proportional to the RPM it is spinning at.
If your cart was moving faster than about 2.4MPH (motor spinning about 500RPM), the motor could not draw the max amps the batteries can produce, the controller can pass and the high current cables and contacts system can deliver.
Try WOT from a standing still a few feet up from the bottom of the hill, instead of flying start at the bottom of the hill.
Max amps will be drawn as the cart accelerates from zero up to about 1 or 2 MPH and will taper off as it continues to accelerate.
If programmed for it, your SR48500 has a peak throughput of 575A, but I doubt a stock motor is capable of drawing that many amps @36V even with a max effort takeoff on a steep incline, but it might exceed 300A.
Save a data log file and check what the battery voltage is dropping to when the motor is drawing whatever its max amps are.