78hz pwm signal works. 30hz and below does not work.
fan pulls 25 amps in free air ramps up in speed and current
3.25" thick 15" dia
pmw signal to ground fan shuts off over 98% duty
Check fan speed chart
Don't know housing size of c7 but have one on back order.
I a have fan from 2015 c7 z06 but no shroud. car fire damaged it.
sounds just like a CPU fan on steroids
when it gets a speed signal it orientates it's self then slowly ramps up.
some times it goes backwards to orientate.
Almost done
Looks nice.. hopefully it works as well. I'm sure the electronics are really similar to a 4 wire CPU fan.. easy to control!