why use a e-fan
#6
I've been following some of the fan threads for the last week or so and was thinking the same, but didn't want to rain on anyone's party. I wonder how much more stress the added electric fan puts on the alternator? 40 amps is a lot of juice... For now, I'll think I'll leave my clutch driven fan in place.
#7
I've been following some of the fan threads for the last week or so and was thinking the same, but didn't want to rain on anyone's party. I wonder how much more stress the added electric fan puts on the alternator? 40 amps is a lot of juice... For now, I'll think I'll leave my clutch driven fan in place.
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#8
Join Date: Jul 2007
Location: South Georgia/East Florida
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Dunno where y'all are coming up with 40 amp draw, my 180 Extreme moves a constant 3300 cfm of air while pulling 18 amps, frees up right at 14 RWHP and saves me big time from overheating when I'm crawling off road where the low rpms wouldn't allow a clutch fan to move fast enough to draw adequate airflow.
Another big advantage I have with it is I can cut it off with a toggle switch when I choose, huge when crossing water or deep mud.
Although I can see a pavement queen only really needing one if they got stuck in big city stop and go driving...
Another big advantage I have with it is I can cut it off with a toggle switch when I choose, huge when crossing water or deep mud.
Although I can see a pavement queen only really needing one if they got stuck in big city stop and go driving...
Last edited by HammerZ71; 08-31-2010 at 11:23 PM.
#9
I've been following some of the fan threads for the last week or so and was thinking the same, but didn't want to rain on anyone's party. I wonder how much more stress the added electric fan puts on the alternator? 40 amps is a lot of juice... For now, I'll think I'll leave my clutch driven fan in place.
40 amps * 12 volts = 480watts
746watts = 1 hp so 480/746 = 0.64343 hp that the alternator is taking in theory.
Alternators typically are about 50-60% efficient. So if it is 50% then double that 0.64343 hp to get what it is really taking out which is about 1.3 hp. So if you gain 10 hp+/- from removing the clutch fan and loose 1.3hp from the added stain on the alternator you will still gain 8.7 hp.
These are just rough estimates.
#10