Preliminary results: I installed one in my SD70 that was overheating badly (the USAT motors pull more current than Aristo, so I figured it would be a good locomotive to test first). 90*, cloudy, 50% humidity. I ran it by itself at 100% throttle for about 15 minutes. Albeit not the same conditions as this past weekend (not pulling a load, not sunny), the temperature hovered right around the "GOOD" line on the controller. I even grabbed onto the coupler for a good 30 seconds at a time to shoot the motor current up, did that quite a few times. The temp still stayed around the "GOOD" line. More to come when I have an opportunity to run it on a hot sunny day, but so far it seems promising that my overheating woes will be solved with this thing.
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