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Old 07-14-2011, 12:49 PM   #4932 (permalink)
jackbauer
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Well , spent most of the day playing about with resistor values and configs. Hit on one that gave the best compromise between ringing , overshoot and transition time.

Tests pefromed:

1)With coolant temp at 25C , took the controller to 510amps for 60 seconds. Coolant at 29C at end of test. No air flow through radiator. Simulate hill climb.

2)With modest (estimate 20mph) airflow through 3/4 of the radiator. Throttle locked at 210 amps for one hour. Heatsink temp leveled off at 49C after 40 minutes. At one hour temp difference between front and rear of heatsink at 3C. One minute power excursion to 510amps. Temp at 52C at end of test.

So i figure enough testing. Gonna install it in the car tomorrow.
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
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