Replacing viscous fan with Thermo??

**stuee** · 10th March 2010, 10:30 PM

Originally Posted by LOVEMYRANGIE

but why so much wiring for the fans??????

I was rewiring the headlights and spotlights at the same time so it was no issue running dedicated circuits for the thermos. Also this way I knew the cable was more than rated for the thermos. I'm a bit of an electronics nerd too so I was going to make a thermofan / dual battery controller with a temperature and voltage readout. I killed the MCU for my project so I ended up using a jaycar temp controller in the meantime (this way I have the cables ready if I ever get round to installing my unit) and used a traxide SC80 for the batteries. Both units have been great so far.

After completion of my install I found an ingenious way of running the fans at a two speed setting using three relays (series then parallel). When I'm finished with the house (never at this rate

) Ill try running the fans this way two reduce the fans switching on and off and keep a more stable temp. No real need to do this other than I can and it would be cool

.

**loanrangie** · 11th March 2010, 11:36 AM

Originally Posted by twitchy

think I'll be searching for a dead AU Failcon................. Thanks lads, we'll see what happens.

You can buy them cheap brand new usually under $200, i think the key with thermo's is to have good shrouding so that the fans draw in the correct amount of air. The ford twin fans come in a proper shroud that is the perfect size for a Rangie/ disco V8 radiator with some minor trimming.

malrv1 · 11th March 2010, 01:17 PM

Stick with the viscous. They pull much more air than electric fans ever will. They are cheap to replace and usually don't give trouble.

**PAT303** · 11th March 2010, 01:41 PM

They don't push more air actually,thermo's are a good idea and neither is more-less reliable than the other. Pat

**blackbuttdisco** · 30th September 2010, 08:38 AM

My last new viscous lasted 5 weeks.

**blitz** · 30th September 2010, 02:24 PM

this is a similar post to one of mine - i am going to fit a AU fords set up to my disco, I bought it from a cash and carry wreckers cost all of $50-00 so if I dont like it I haven't wasted any real money and if I do like it and it buggers up then I will buy a new one to fit.

apparently from one of the people who posted on mine (sorry I cant remember who) the Mondeo is a better and easier fit

**blitz** · 1st October 2010, 09:04 AM

FYI
I contacted the mob who either make or import the TM2 engine saver, you can order it with optional relay output so you can drive a relay to control your thermo fans.

It must be ordered though as it is not standard but it doesn't cost any more.

I am going to order one and use it

**350RRC** · 1st October 2010, 09:11 AM

Originally Posted by blitz

FYI
I contacted the mob who either make or import the TM2 engine saver, you can order it with optional relay output so you can drive a relay to control your thermo fans.

It must be ordered though as it is not standard but it doesn't cost any more.

I am going to order one and use it

Keep in mind that you can control each fan separately, which I think is preferable. Startup current for both at the same time would be quite high.

I'm looking for something like this:

http://www.x-eng.co.uk/X-Fan%2034mm.asp

that I can run two thermo switches from. X - Eng ones come in 38mm too. Have seen one somewhere locally but can't remember where.

cheers, DL

**blitz** · 1st October 2010, 10:29 AM

Originally Posted by 350RRC

Keep in mind that you can control each fan separately, which I think is preferable. Startup current for both at the same time would be quite high.

I'm looking for something like this:

X-eng High Performance Off-Road Engineering

that I can run two thermo switches from. X - Eng ones come in 38mm too. Have seen one somewhere locally but can't remember where.

cheers, DL

they look just a bit snazzy, perfect for two stage fan control or if you wanted to get smart three stage with the two fans

**stuee** · 1st October 2010, 11:12 AM

Originally Posted by 350RRC

Keep in mind that you can control each fan separately, which I think is preferable. Startup current for both at the same time would be quite high.

I'm looking for something like this:

X-eng High Performance Off-Road Engineering

that I can run two thermo switches from. X - Eng ones come in 38mm too. Have seen one somewhere locally but can't remember where.

cheers, DL

I've purchased the same thing of ebay for less than $30AUD delivered. Have a look around, they should be cheaper than that.

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