[Dragncar]

Originally Posted by ta man

I'm using a Derale Shroud with twin Spal fans 4000cfm and a cold case rad. I recently switched to electric fans mainly for hp loss not for cooling. I had zero issues with a stock 80 maxi 3 core AC rad clutch fan and shroud. I was rather disappointed with the Cold Case rad..fit wise it wasn't great and made in China.

How did that work out ? Was there any power found at the track ?
I have no issues with a stock 3 core and flex fan with a filled block.
But, I do run 2 classes when I race and go a lot of passes on a good day so I bought a Derail 4000 cfm duel fans, Meziere water pump, setup and a big aluminum 2 core radiator so I can cool between rounds. Also bought a solar battery deal so I can run a charger without having to listen to a generator in my pit. Can't stand those things.
There is some controversy about any seen power difference being a wash because the alternator just pulls harder on the belts.
Still have the belt driven stuff in the car and probably will have it all season.

[ta man]

Originally Posted by Dragncar

How did that work out ? Was there any power found at the track ?
I have no issues with a stock 3 core and flex fan with a filled block.
But, I do run 2 classes when I race and go a lot of passes on a good day so I bought a Derail 4000 cfm duel fans, Meziere water pump, setup and a big aluminum 2 core radiator so I can cool between rounds. Also bought a solar battery deal so I can run a charger without having to listen to a generator in my pit. Can't stand those things.
There is some controversy about any seen power difference being a wash because the alternator just pulls harder on the belts.
Still have the belt driven stuff in the car and probably will have it all season.

Still to be determined if it has picked up.

[HWYSTR455]

The brushless SPAL fans are so friggin expensive, it's even painful to shop them. And the SPAL brushed fans are about the cost of other brushless offerings.

Some of that though is due to the electronics, many brushless fans have a 'simple' PWM controller built in. All you need is a programmable PWM output to run them.

Being able to run a pair of 14" fans is certainly an advantage over a pair of 12", and the cost difference between is nominal.

Nice thing about that Flex-A-Lite fan is that it can run either off a voltage signal or a PWM signal. OE replacement type and many other brushless fans require a PWM input, as a reminder.

Overkill with a cooling system is a win-win, it's like that saying about condoms...


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[HWYSTR455]

Actually, comments I made referencing 'Flex-A-Lite' fans is really the Proform fan that FMG tested....

EDIT: This one:

https://www.summitracing.com/parts/pro-67035



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[nUcLeArEnVoY]

Originally Posted by HWYSTR455

The brushless SPAL fans are so friggin expensive, it's even painful to shop them. And the SPAL brushed fans are about the cost of other brushless offerings.

Some of that though is due to the electronics, many brushless fans have a 'simple' PWM controller built in. All you need is a programmable PWM output to run them.

Being able to run a pair of 14" fans is certainly an advantage over a pair of 12", and the cost difference between is nominal.

Nice thing about that Flex-A-Lite fan is that it can run either off a voltage signal or a PWM signal. OE replacement type and many other brushless fans require a PWM input, as a reminder.

Overkill with a cooling system is a win-win, it's like that saying about condoms...


.

They're expensive, but 2000CFM per fan with a load is friggin' impressive, man. I'd pull the trigger on 'em knowing I'd probably never have to worry about low speed or idle cooling issues again, even in the summer with AC running.

I've also seen them on special at the mid $400+ range, not that it's really any better. The investment IMO is a small price to pay to prevent an overheat or the stress of always having to keep my eyes glued on the temp gauge. Like you said, overkill with a cooling system is never a bad thing.

Just sucks that it's not only a matter of getting the fans, though. He recommends 6 AWG wire, which is absurd for a cooling fan, and a 200 amp alternator. Both fans together would be pulling nearly 80 amps if his tests are any indication.