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Author: Subject: Rad Fan overide switch
the moa 2

posted on 14/6/07 at 08:46 PM Reply With Quote
Rad Fan overide switch

Just nearing the end of my build and am looking to sort a rad fan overide switch, searched but couldn't find anything.

Currently i have a adjustable thermo switch from demon tweeks/merlin but think i may aswell have one to keep her nice and cool if needed.

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Avoneer

posted on 14/6/07 at 08:50 PM Reply With Quote
How is it wired at the moment?

Live to one side of thermo switch, other side of thermo switch to one side of fan, other side of fan to earth???

Pat...

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indykid

posted on 14/6/07 at 08:54 PM Reply With Quote
try this....

http://www.locostbuilders.co.uk/viewthread.php?action=attachment&tid=22368&pid=183641

tom


[Edited on 14/6/07 by indykid]






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russbost

posted on 14/6/07 at 09:19 PM Reply With Quote
Well prepared to get shot down in flames, but I would say if you need to override the thermal switch you have a problem. If I can keep my beast running on standard bike rads & thermal switches with 2 engines jammed into a very small space anything "normal" should work without a hitch





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RazMan

posted on 14/6/07 at 09:28 PM Reply With Quote
I have to agree that it is totally unneccessary - like fitting two driver's harnesses in case one breaks
If the right temp range is set, then it works ...... why complicate things?





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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Humbug

posted on 14/6/07 at 09:38 PM Reply With Quote
quote:
Originally posted by RazMan
I have to agree that it is totally unneccessary - like fitting two driver's harnesses in case one breaks
If the right temp range is set, then it works ...... why complicate things?


I agree... I think. I fitted an override switch and have only ever used it to test that the switch is working! As mentioned, if you need an override, something's probably wrong in the rest of the setup/

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bob

posted on 14/6/07 at 10:00 PM Reply With Quote
I fitted an over ride switch as in toms (indykids) post pic, used it a few times when the pinto was in when i hit traffic as it did get hot and i was just nervous of the thermo switch not working.

Got to admit it was probably more my plumbing as now the zetec is in and i've changed the whole set up temp holds well and thermo switch in polo rad seems better too.

Switch is still wired incase the thermo fails though, i trust nothing

[Edited on 14/6/07 by bob]






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the moa 2

posted on 14/6/07 at 10:40 PM Reply With Quote
I guess i wont fit one then thats one less job.

I have tested and bled the cooling system just on my drive and it doesnt seem too bad but i did have bonnet off.

Fingers crossed it holds up alright.

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