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Old 05-23-2008, 09:42 PM
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Electric Dual Fan Setup

Does anyone use a setup like this?

http://cgi.ebay.com/ebaymotors/TWIN-...ayphotohosting

How would something like this compare to a belt driven fan with a stock shroud? Would be on a 350 sbc in a fullsize truck. Thanks!

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Old 05-23-2008, 10:33 PM
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I think I'd pass on that one.

I've got a twin 12" puller setup from Flex-A-Lite. It uses two seven blade fans. It works great, even on hot (90+) days.
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Old 05-24-2008, 05:59 AM
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dual fan setup

i have to measuer mine i have duals they are either 10 or 12 but i have had no problems i have a 383 in my S10
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Old 05-24-2008, 06:16 AM
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That shroud is not deep enough those fans will just pull air over their diameter.You need the fans to pull air from the rad corners as well, plus the air needs room to move.
I had something similar from Flex-A-lite and it just didīnt work.
I installed two of their fans into a homemade deep shroud and itīs just perfect.
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Old 05-24-2008, 07:09 AM
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I was thinking that too. The shroud doesn't look deep enough. Could you just buy two separate fans and have them side by side, using a good fabricated shroud? Can actually buy them separate cheaper than as a set of two.
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Old 05-24-2008, 07:14 AM
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elec fans

I don't know about this particular fan, but I just installed a single elec fan on my 65 Chevy pickup last night. I'll be testing it today I guess.
I always thought it was some goofy foreign stuff until I had a couple of experiences with them.
For several years I was an Entertainer Coach Driver.....I drove buses for rock bands.
These coaches go for $850K to a MILLION bucks and have huge generators, and all sorts of gadgets, and some times several remote radiators depending on the brand of coach.
These generators run 24/7 both moving and sitting still.......thru winter snows and 114 degree desert heat........all cooled with electric fans.
Then when I did some work on my Son's VW Jetta....it's the raciy one....it has a two fan set up.
One fan kicks in at a certain temp........then the next one runs when it's needed. It even has an extra water pump that circulates water AFTER the engine is shut off, and the fans will run until the whole deal is cooled off.
I put a 283 in my 65 pickup, and the engine is set way back....and I have been concerned about cooling.
It does not have a fan shroud, and will not get one untill I can fabricate something nice, that I can remove easily when I need to.
Sooo I added the electric fan to help out.
I also likethe idea that the fan still pulls plenty of air even in stop light traffic.
Mine has a thermostatic control I can adjust for different temps.
So I am going to try it.
I do think that I would be more comfortable with dual fans as the one I am using is not that huge and it seems to me there will be a cool spot in the middle of the radiator, and dual fans would spread out the cooling area.
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Old 05-24-2008, 09:05 AM
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I tried these two setups, neither worked.



I then made this;



Not pretty but it does a good job of cooloing.
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Old 05-24-2008, 03:12 PM
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I have a Fluidyne alum radiator, with dual Mr. Gasket electric fans, set up one inside and one outside, pusher and puller.
Mr. Gasket is probably the best quality and slimmest fan on the market.
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Old 05-24-2008, 03:55 PM
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Quote:
Originally Posted by stfinney
Does anyone use a setup like this?

http://cgi.ebay.com/ebaymotors/TWIN-...ayphotohosting

How would something like this compare to a belt driven fan with a stock shroud? Would be on a 350 sbc in a fullsize truck. Thanks!

No electric fan setup comes even vaguely close to a belt driven fan. That is not to say they can't be adequate, but you're comparing a 19" heavily angled 7-blade steel fan that takes up to 12 hp to run versus a 1/8 hp electric motor and a plastic fan with 1.5" blades. I'd say that electric setup would effectively move about 1/10th the air a properly setup belt fan would.

It takes careful fan selection and a lot of money to do electrics right, and even then, they're not as reliable as the old trusty rusty.
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Old 05-24-2008, 06:15 PM
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Malc, I've had good luck with that dual Flex-A-Lite setup in your first picture there. It's worked very well for me.
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Old 05-24-2008, 07:11 PM
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Quote:
Originally Posted by stfinney
Does anyone use a setup like this?

http://cgi.ebay.com/ebaymotors/TWIN-...ayphotohosting

How would something like this compare to a belt driven fan with a stock shroud? Would be on a 350 sbc in a fullsize truck. Thanks!
I have that exact set up on my blower car. It came from Whites. It cools my car just fine, stays at 190 in heavy heavy traffic for along time. We cruise the rod runs in Pigeon Forge and you might move 1 mile in an hour and it does not over heat at all.
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Old 05-24-2008, 09:18 PM
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Quote:
Originally Posted by stfinney
Does anyone use a setup like this?

http://cgi.ebay.com/ebaymotors/TWIN-...ayphotohosting

How would something like this compare to a belt driven fan with a stock shroud? Would be on a 350 sbc in a fullsize truck. Thanks!
Ah yes, Skip White, home of the 'no name' Oriental parts. I have asked them several times, through Ebay, where some of their stuff is made. Answer was always China.

I would be skeptical on Skip's flow numbers and specs on this fan. Show an HVAC man (they know about air flow) the specs and see what he thinks, although Skip may not supply enough numbers. 4000 cfm @ what static pressure or free air, motor rpm,. etc.

I would at least like to know who the manufacturer is. There are a number of brand recognized electric fans available, that I would use, before I spent my money on this unit.

I have run a PermaCool 16" for the last 4 years on my modified 383, in my C3 Corvette, without any problems. The PermaCool is a little over $100 from Summit/Jegs and does not pull near 40 amps. Check the manufacureres web site, a little hard for the Skip White stuff, and compare specs.

BTW, I did have to fab up a mounting bracket, <$10 worth of material from Lowes so as not to use the through the rad plastic ties. Also using a Painess fan relay set up.

19115 16" High Performance Electric Fan
Mounting Area Req'd: 16" x 16" x 3-3/4"
Est. CFM: 2950
Motor RPM: 1750
AMP Draw: 9.8
Fuse Size: 30 AMP
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Old 05-24-2008, 09:35 PM
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Yeah, I noticed there wasn't any brand names and that makes a wonder also!! I am going to have to either make a shroud or buy a new one for $70. Can't find a used one anywhere. Was thinking for a little extra, maybe going to an electric fan setup. I may just stick with getting another shroud. Right now, in traffic it gets around 210 degrees and about 170-180 degrees when driving, without a shroud.
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Old 05-24-2008, 10:18 PM
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Did you notice that the "Skip White says" (or whatever) part of the ads sounds like something Billy Mays, guy with black beard who pitches crap on late nite TV, would say?
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Old 05-24-2008, 10:24 PM
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Mr. Gasket fans are made in the usa.
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