Run electric fans all the time?
So maybe you're only killing 10hp then? That vs 0? Sounds like cheap power then.
I'll try to be as nice as I know how, about this;
I'm guessing you have no idea how alternators work. Electric fans are not zero energy devices.
I know nothing about electric fans, just like I know nothing about a lotta things, and I freely admit it. I have heard that the better fans draw 40 amps, so if that is true, then; at 40amps x13.5volts, they suck 540 watts or .724 horsepower net. But alternators are only maybe 10 to 20% efficient so really, .724/.15=4.83hp gross. If you have 2 of them, that's 9.65hp. And how much does the controller burn up? This energy has to come from somewhere, and the alternator is it.
But wait it gets better, In traffic at sub 30 mph, your fans could be both on, sucking all that 9.65hp from your monster engine, now idling along at the same 25hp, everybody else is moving at. Ok so 9.65/25=39.6% of your crank power is going to driving the fans. Gee that's 3.168 cylinders worth...... over 3 cylinders. So, you don't notice it cuz you just open your throttle a lil more. But it shows up at the pumps, all the same.
So what's the advantage to electric fans?
On the street for a street-only type car,cooling wise, there is no advantage.
At the track, being able to set them on max, in the pits, yeah, that could be an advantage.But my all steel, 7-blade, hi-attack angle, thermostatically controlled clutch-fan, keeps my engine at a constant 207*F no matter the circumstances, so...... no advantage to me.
After 35/40mph, for a streeter, neither fan even needs to be there, cuz ram-air is, has been, and will continue to be, the primary cooling force, pushing air thru the rad, rather than pulling.
Try to think of it this way; After 35/40 mph, my mechanical fan is in danger of being a restriction to cooling. But if I drive a lil faster the air pressure coming in could start to power my fan into generating power, just like a wind-turbine. Can your electric fans do that trick? lol. Well, no, um, they're not connected to the crank, and um, they're not even on. Think about it. The Earth is not a sphere. think about it.
