dual fan question
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Intermediate
Joined: Nov 2004
Posts: 46
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dual fan question
Anyone running a dual electric fan set up, do you have both fans kick on at the same time with the electric thermo switch or do you have one running all the time and the other kick on with the thermo switch? Thanks for any help!The front valance wasn't secured, so I secured it
Melting Slicks
Joined: Dec 2005
Posts: 2,441
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I have the dual 11" Spal unit with a progressive controller that varies fan speed according to engine temp. It also has a soft start feature that when it starts the fans it does so slowly to minimize the electrical surge to the alternator. I like it, no voltage gauge deflections when the fans start, and fan speed tied to the engine temp requirements.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
Last edited by shafrs3; Sep 22, 2006 at 09:04 PM.
Pro
Joined: Jan 2006
Posts: 599
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From: New York
Fanzzzz...
I'm running the 210's from flex-a-lite....I have them both set 2 go on and off at set temps plus I have my own control in the cockpit so if I see it's getting hot n there not on I just hit the switch....So far so good.......
Burning Brakes
Joined: Jan 2004
Posts: 769
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From: Ft. Lauderdale Fl
Originally Posted by jerrylee
I'm running the 210's from flex-a-lite....I have them both set 2 go on and off at set temps plus I have my own control in the cockpit so if I see it's getting hot n there not on I just hit the switch....So far so good.......
Burning Brakes
Joined: Aug 2002
Posts: 1,146
Likes: 10
From: Scottsboro Alabama
Originally Posted by SteveG75
Dual Spals tied together. Both come on at 195 off at 185. No reason to have one running all the time since I get enough airfolow on the highway to keep the car cool.
I ran mine that way for a while but I went one step further. I added another sensor and changed the operation to where both fans are controlled independently. One fan is controlled by a sensor located in the head, the other fan is controlled by an intake sensor. This will keep them from coming on at the same time even though both sensors are rated 195/175. What I have found so far is the head controlled 11" fan works sufficent enough for cooling that the intake one never has come on....even at prolonged idling in the heat of summer. Another plus is if the head controlled fan or sensor was to fail, the intake controlled fan would then operate for cooling. I mounted two small led's in my dash so I can monitor when the fans are running. Seems to work very well.
