Opinions on PWM fan controllers

[andrewb70]

Originally Posted by snappytravis

It seems that I talked to spal about my fans, and they said that the corvette fans are brushless. I can't remember for sure, It may have been that my fans wouldn't work with the pwm controller. I can't remember. I think that is a sweet setup for sure. If I do another project I may go that route. Good Job and thanks for sharing the info. I know on Lous Change build thread they installed the same controllers. I will have to find it and see what fans they ran. They used 2 corvette controllers on it.
Thanks again, I understand it a lot better now.

I can't imagine that an 80 dollar fan is anything fancy. I really don't see a link between PWM control and whether a fan motor is brushless or not. The ECU send a duty cycle command to the C6 controller, based on that command, the controller adjusts output voltage to the fan. It's as simple as that.

I think using 2 controllers is overkill. What's the current draw of the 11" Spal fans? My guess is that it is under 15 amps each.

Andrew