So, I finally got my Torqueboards 12s esc setup running, and took a few test runs on 6s and 9s. In both cases, I took laser thermometer readings of the esc heatsink after a few miles, and they were showing 140-165°F, and definitely hot to the touch. On my last and only run on 9s, I must have hit an overheat cutoff twice within 4 miles of flat cruising at 15-20 mph where the board cut power and I could only go around 8-10 mph until I let the esc sit and cool for a while. At first, I thought the heat was caused by a combo of 6s, high amps, and a mostly, but not totally sealed enclosure. But it wasn’t until I tried the 9s that the esc actually got so hot, it cut power to the system. Anybody have any thoughts on what may be causing this? My enclosure is definitely not airtight at all, but the esc also doesn’t have any active airflow over the heatsinks, but I thought these ran cool enough under normal conditions that it wouldn’t really be needed. Maybe something is wrong with my wiring, but everything works great until the esc starts cooking. Here’s some pics and specs of my setup. Please help. Thanks.
6s battery: 4 x 5200mah 3s 10c Multistar in parallel & series
9s battery: 3 x 4500 mah 3s 35c Zippy Compact in series
Esc: Torqueboards 12s car esc
Esc settings: Timing= high, acceleration= very high, max forward= 100%
Motor: Turnigy sk3 245kv
Gearing & Wheels: 16T/36T & 83mm clones
Remote: Torqueboards mini remote