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Old 07-18-2015, 12:06 PM   #1
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Hydraulic engine fan converted to electric fan

Has anybody ever said screw it to the over complicated and prone to failure hydralic engine fan and converted to an electric fan setup? I have a 2001 Dynasty with the 350hp Cummins. Im not liking the cost of replacement parts and I have determined I can convert to electric for less than replacing any part in that system. If you have done it please share what you did!
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Old 07-18-2015, 12:34 PM   #2
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I don't think an electric fan can move enough air to work very well.
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Old 07-18-2015, 12:45 PM   #3
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Quote:
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I don't think an electric fan can move enough air to work very well.
I agree with Mr D it would take one monster electric fan but if you can find out cfm airflow on the hydraulic fan you can see if an electric fan is even made. The only problem I have had with mine was a front seal leak I replaced with a 15$ kit from a dealer .(But it was not easy those parts are heavy).
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Old 07-18-2015, 07:43 PM   #4
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If you convert to electric you will need some type of controller to adjust fan speed. You will also need some heavy duty on off switch. Also it will take a a very large electric motor that uses a lot of amperage. Etc, etc, etc.


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Old 07-18-2015, 07:58 PM   #5
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Electric Fan Engineering : Cooling Fans : Truck Electric Fans
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Old 07-18-2015, 08:32 PM   #6
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following this thread, would love to make this change and simplify things abit
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Old 07-18-2015, 09:11 PM   #7
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Replacing the mechanical or hydraulic fan with an electric model seems like a good idea, but I wonder if there is enough electrical power available to run the fan with the engine at idle. How much power does the alternator make at 500-700 engine RPMs? Is there a way to increase idle speed when the fan needs more power, like cars do for the air conditioning compressor?



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Old 07-18-2015, 09:24 PM   #8
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Those would not work on a side radiator (which I assume that the OP has) as they will not move enough air at speed. They need the assist of ram air (read front mount radiator) to be effective at higher speeds and loads.
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Old 07-19-2015, 05:13 AM   #9
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Those would not work on a side radiator (which I assume that the OP has) as they will not move enough air at speed. They need the assist of ram air (read front mount radiator) to be effective at higher speeds and loads.
I saw that, too. Perhaps if you size the 400 HP at under 80k? Dunno.

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These folks talk about Hydraulic fans up to 50k cfm, at least they would be of current manufacture.

The other factor , as mentioned, is power. 70 Amps at 12V. I don't know if there is that kind of margin left. You might have to run a second alternator.
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Old 07-19-2015, 05:26 AM   #10
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All I do know is that when the hydraulic fan works well it really works well. Save yourself the grief and repair your hydraulic fans.

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