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I guess I'll share this nasty pic with everyone else here. I had a rough day today on the water in the name of experimentation. I have a cat that I built over the winter that is set up to run higher RPM with a smaller prop and high voltage (8s1p). The result was awesome. The boat is MUCH faster than I ever expected it to be (I would guess around 70...), and the runtime is phenomenal. I was getting close to 15 minutes runtime with 5000mah and cool temps from the motor and 80A HV ESC. Here's where it goes bad...
Ben (fightercat) informed me that some of the LV ESCs he sells are actually rated by the manufacturer to be 2s-8s, not 2s-6s like most ESCs. It has until now generally been accepted that these ESCs are best for 2s-6s use, but nobody has really tried them on any more than 8s, so we decided to give it a shot. I mounted a special aluminum plate in my hull where the esc would sit to prevent it from burning my carbon fiber and the bottom of the hull if something went wrong, and Ben provided me with the ESC. To be clear we both knew we were playing with fire here but wanted to see what would happen(so before the typical nay sayers start telling me how dumb I am to run ESCs at their max rating, save your breath and just tell yourself...you probably care about your input more than anyone else does anyway
).
I got about a lap and a half out of it before it just quit...about 30-60 seconds later it just about blew the hatch off and shot smoke out of the seams of the hatch like a train whistle.
I'll post a couple pics. The esc shown in the before photo worked great with thsi setup...its not the one that fried:
Ben (fightercat) informed me that some of the LV ESCs he sells are actually rated by the manufacturer to be 2s-8s, not 2s-6s like most ESCs. It has until now generally been accepted that these ESCs are best for 2s-6s use, but nobody has really tried them on any more than 8s, so we decided to give it a shot. I mounted a special aluminum plate in my hull where the esc would sit to prevent it from burning my carbon fiber and the bottom of the hull if something went wrong, and Ben provided me with the ESC. To be clear we both knew we were playing with fire here but wanted to see what would happen(so before the typical nay sayers start telling me how dumb I am to run ESCs at their max rating, save your breath and just tell yourself...you probably care about your input more than anyone else does anyway
).I got about a lap and a half out of it before it just quit...about 30-60 seconds later it just about blew the hatch off and shot smoke out of the seams of the hatch like a train whistle.
I'll post a couple pics. The esc shown in the before photo worked great with thsi setup...its not the one that fried:
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