24 volt electric radiator fan

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xorph
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24 volt electric radiator fan

Post by xorph »

Where would I find one of these?
Preferably a new and / or reliable one.
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DieselBoy
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Re: 24 volt electric radiator fan

Post by DieselBoy »

I guess your going to put that in either a Cruiser or Safari????

When is working my Safari, I couldn't get hold of 24v fan for the right price so i got creative.

You can run two 12V Fans in series on a 24V system. This works as when you wire something in series you effectivly half the voltage to each fan, so they get the required 12V.

You can fit two 10" fans on the Safari radiator, probably the same on a Cruiser??
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xorph
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Re: 24 volt electric radiator fan

Post by xorph »

Yeah Its for a cruiser. Im doing an engine swap so I need 12v for some stuff.
I have a switchmode dc-dc converter to run the fuel pump and ignition/injection/computer but its only rated at 20A continuous. Fuel pump alone can draw 10Amps.

In series would work, unfortuantely a failure of either fan would drop both :( As long as you had spare wire you could easily bodge it to one battery and have one fan so its still a good option. I havent personally had an electric fan fail yet either.

Im thinking I might run 2 identical fans, one from each battery, to give symetrical(ish) load.
unfortunately cruiser radiators are a bit narrow.

This is all because Ive heard if you steal everything from one battery the other battery ends up getting overcharged and dying.

Cheers, MAtt
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darinz
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Re: 24 volt electric radiator fan

Post by darinz »

Another idea is to have a seperate battery for the 12v. It doesn't have to be big and then charge that battery seperately. I done it this way and have 2 alternators. It isn't as complicated as it sounds.
Another option is a thing call an 'even charge'.
http://www.trademe.co.nz/Trade-Me-Motor ... 014906.htm
That equalises the charge between the batteries so that you can just run you 12v from one battery, and it balances the charge between the two. From memory it was 30amp BUT as it was charging the battery you can draw more than this at times as it will charge at this rate all the time.
The greatest draw back is having another electronic device on a 4x4!!!!!!!!
Nissan Terrano coilovers, turboed VH45, Safari axles, and some other stuff.
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DieselBoy
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Re: 24 volt electric radiator fan

Post by DieselBoy »

Go the even charge, that way you can run alsorts of other 12V applications in the future!!!!

Be worth the expense :D
lax2wlg wrote:Is that like saying 'she's hot, for a crackwhore??
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dazza85
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Re: 24 volt electric radiator fan

Post by dazza85 »

DieselBoy wrote:Go the even charge, that way you can run alsorts of other 12V applications in the future!!!!

Be worth the expense :D


I would have to agree with this option ....
A friend of mine has one in his truck and it works very well.
There is no mechanical problem so difficult that it cannot be solved by brute strength and ignorance.
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mercutio
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Re: 24 volt electric radiator fan

Post by mercutio »

yorick used to have one of these in one of his roadsweepers the auxiliary motor had a 12v starter but the rest of the truck was 24v it worked well for years as far as i know it is still working probably been in the truck 10 years now
my 4wd is not a truck

old mercedes never die but sometimes they do need some love

older cars are good,mercedes are better,older mercedes are the best
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xorph
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Re: 24 volt electric radiator fan

Post by xorph »

Yeah Seems like the proper way to do it actually.

A voltage converter would work but i dont know if the one ive got is up to running fans as well, on top of the fuel pump, injectors, coil packs, trailer lights, other accesories...

The voltage equalizer on tm is very expensive.

An Aussie company called Redarc sell them too.
http://www.redarc.com.au/ce.htm

Capital Instruments in Onehunga sell them. A 20Amp one is about $270 +gst and a 30Amp is about $370 + (I think)

They say they are 'water resistant'
but thats a lot like saying a human is bullet resistant because many rappers like Seal have survived occasional capping.
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