Novak HV4400 and 7XL BL Sensored System...

[GriffinRU]

Originally Posted by MetalMan

Why didn't Novak do that?

Cost would be always the main, then specs and goals. On paper ESC rated at 375W, which is safe with current setup, but there is room for improvement and it is always nice to offer warranty when you have good setup.

When I attached 1200W motor and increase load a little bit, now with given internal resistance of only 2 FET's per phase, heat transfer and dissipation should be addressed. While current capabilities are sufficient, internal resistance is somewhat high, and in stock configuration (taking into consideration de-rating factors) is good for 30-35A continuous without overheating, which is about ~450W @ 12 cells. Adding extra copper increases thermal mass and improves conductivity on PCB, but adds weight.

So in stock configuration if you keep current under 30-35A (Average current) then you should be fine. This can be accomplished by installing high turn motor and achieving the same powers with voltage rather then current.

Meanwhile I will be exploring possibilities of high cell count in stock form and possible mods.

Artur