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post #1 of 8 (permalink) Old 01-08-2009, 08:40 PM Thread Starter
 
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Fan Direction and Over Heating

We discovered today that the fan on the Revolt (and probably the XLs) are pusher fans and turn to where they push air through the radiator! You would think they would be pullers, but they are not. The fan design is such that it wants to be a puller. If you swap the wires in the connection, it will run as a puller, but not as efficiently.

I plan to swap my connector wires to make it a puller and see how it helps. I have never overheated..........but it makes no sense at ALL that it should be pushing air.

Those with over heating issues, you may want to swap the wires in the connector and see if it improves.
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post #2 of 8 (permalink) Old 01-09-2009, 09:33 PM
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Re: Fan Direction and Over Heating

That would make sense to pull it through the radiator, like the fan and shroud, that cars have.
In a push configuration, if the fan came on wile moving forward, wouldn't that defeat the fan anyway?
Keep the air moving one way, towards the back.

Its hard to force air through a radiator. I know a guy who has a "58" Chevy Hot Rod, 454 ci. He had 2 pusher fans on a 4 core radiator, with out a shroud.
He couldn't go far without it overheating. He put the fans on the inside, with a shroud, pulling the air through. The overheating stopped.

The shroud, is what makes it work. The fans can create a low, or high pressure across the whole face of the radiator. High air pressure flowing towards low, through the entire radiator core. The shroud needs to be sealed, around the edge too.

I need to look at my Revolt, and see how its wired.

Good info four-by-nut!



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Last edited by Bear Foot; 01-09-2009 at 09:49 PM.
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post #3 of 8 (permalink) Old 01-17-2009, 10:22 PM
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Re: Fan Direction and Over Heating

I went out riding today and checked my fan and it is turning in the right direction. It is pulling air throught it. Thanks for the heads up four-by-nut.

Bearfoot was your's OK?
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post #4 of 8 (permalink) Old 01-18-2009, 01:47 PM
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Re: Fan Direction and Over Heating

Yup, I checked it today. It came on and was blowing the right way.

Checking the wires, coming to the fan:
Red/yellow is your 12 v.+
Black is ground -
With a meter set on DC, you should get 12+vdc between, red/y to ground. You can use the motor as a ground.

The fan wires are blue and black

Check this, but I think at the fan connector, red/yellow to black and black should go to blue.
Clear as Mud?
If you have black to black its wrong. If you have the right colors at the connector, and its still going backwards, check the fan relay. It may have gotten hooked up wrong there.

If its turning the wrong way, the easy fix is, reverse the wires and it will go the other way. Its a DC motor, it can do that.



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post #5 of 8 (permalink) Old 01-18-2009, 05:17 PM Thread Starter
 
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Re: Fan Direction and Over Heating

OK. I think I will take back what I said earlier. My fan has a blue and black. I made the assumption that blue would have +12v on it and black ground. So I directly attached a +12v to blue and negative to black to check direction and it was pushing air. But reading your replies, I went and checked the connections coming to the fan. The connector is setup such that red from the electrical system would go to black on the fan motor. So..........if +12v is on the red wire coming from the electrical system, then it should be a pulling fan. Mine is all apart right now as I am upgrading the cage work, dash, steering connections, etc. So the battery and computer are all disconnected.

I will check it later once I have a chance to run it and get it hot enough for the fan to come on. Gonna be a few weeks.
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post #6 of 8 (permalink) Old 02-15-2009, 07:46 PM Thread Starter
 
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Re: Fan Direction and Over Heating

Got my rig back up and running. Checked today. Fan is pulling. I"m an idiot! Please ignore my ramblings!
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post #7 of 8 (permalink) Old 02-16-2009, 04:06 PM
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Re: Fan Direction and Over Heating

Ramblings are good. You made everyone stop and think a little.



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post #8 of 8 (permalink) Old 02-16-2009, 06:03 PM
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Re: Fan Direction and Over Heating

I agree with Bearfoot! If there are potential issues they need to be brought up and discussed. Don't throw yourself under the bus!
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