Re: OT Maybe? replacing viscos fan with leccy ones

The 'thermostat' switches are available from Kenlowe for about £25, this would be ideal for running the electric fan.They have a probe which sits inside the top radiator hose, this is attached to the switch, which then turns on the fan at the set temperature(the cut-in temperature is adjustable) Alan.

Personally I'd run them as two seperate circuits, even if they are triggered by the same capillary switch. Putting a single fuse in line with two fans means that if one fan jams or has a problem it will blow the fuse and boh fans stop working. The first you know about it is when you're sat in a traffic jam and steam starts appearing... Better to have a system that will keep one fan working in the event of either failing.

There is also the issue of the amount of current drawn by the fans using the small blade fuses as some fans will take 15A each (20A on startup) which is pushing it on a normal blade fuse and a single 30A relay. I've had single blade fuse setups actually melt the fuse holder in this configuration.

cheers

Dave W.

Perhaps, in retrospect, you might have turned the engine off while stuck in traffic?

On or around Mon, 18 Aug 2003 16:51:32 +0100, Dave Wheatley enlightened us thusly:

I've just abandoned the electric fan on mine, and fitted a non-viscous engine fan again. Electric fan motor failed, on a very hot day, which left it with not enough cooling. Hunted in a breakers, found another fan but not as big, which isn't shifting enough air.

You may find the twin one is set to come in in stages, one cutting in at a lower temperature, then the other if the temperature still gets higher. They use quite a lot of current.

someone the other day reckoned that a ford focus (I think it was) fan, which is very low profile, will fit in front of the rad and behind the grille on a

That's a good point I hadn't thought of. I 'was' going to link them together but now I won't. Current...the wiring to the fans is not big by any means, do they all draw masses of current, surely the guage of wire would reflect this?

(Another) Dave W.