tegwin
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| posted on 24/2/09 at 11:11 PM |
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Locost fan switch?
I have been trying to order some bits and pieces for the TVR.. added a nice aluminium housing to my basket along with an adjustable thermocouple type
switch... comes to £45...
Now thats expensive for a fan switch...
Is there a lo-cost alternative? I wanted adjustable as im not sure what temperature I need the fan to kick in at....
This is the thermocouple device...
Could I just cabletie that to the radiator core rather than have to buy the expensive housing to allow it to sit in the water?
Any cheaper suppliers?
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indykid
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| posted on 24/2/09 at 11:18 PM |
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you shouldn't need an 'expensive housing' if that's the thermocouple you plan to use. it slips under the edge of a radiator
hose and you get a rubber section with tapered sides and a slot in the centre to seal it.
that's how i've seen kenlowe senders plumbed in in the past anyway
hth
tom
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James
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| posted on 25/2/09 at 12:43 AM |
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For that much money you could trial and error a few OEM ones.
Golf one for my car was £8 IIRC.
Cheers,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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02GF74
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| posted on 25/2/09 at 07:42 AM |
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^^^ wot they say.
you need that bulb to sit in water.
I have Kenlowe and one that looks identical to the one you show. The kenlowe (Land Rover) fits into a hose woth the thin rubber seal - not ideal but
is hasn't leaked yet.
The other one (kit car) fits into radiator oppsosite the entry hose with the connector (opposite hose allows access to the rear - I never realised the
bulb was that long!).
But I wouldn't bother with either of them.
Work out what temp you want your fan to kick in - there as swtiches in various temperatures using same fitting as well as switches with twin i.e. will
sitch at 2 different temperatures to kick in 2 fnas, each at different tempereatures.
somewhere out there is a list of part numbers and tempeeratures.
see X-Eng (LR specialist parts) - there is stuff about this.
If you want adjustable temp, then a comparator circuit with a "standard" temp sender would do that (not sure about the hysteresis though),
all done for less than a tenner.
[Edited on 25/2/09 by 02GF74]
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britishtrident
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| posted on 25/2/09 at 08:22 AM |
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With a fan switch what really matters is the temperature is the temperature at the raddiator outlet
http://www.maplin.co.uk/module.aspx?moduleno=220003
the relay is only rated at 10 amps for controll a fan I would advise slaving a higger rated realy to it. relay
You might want to look at these which can be used with a relay --- I think Maplin also sell them
http://www.jaycarelectronics.co.uk/productView.asp?ID=ST3836&keywords=breaker&form=KEYWORD
[Edited on 25/2/09 by britishtrident]
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r1_pete
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| posted on 25/2/09 at 08:35 AM |
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These look much neater and a bit cheaper
Linky
Not adjustable but 90 to 80 seems pretty common.
[Edited on 25/2/09 by r1_pete]
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02GF74
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| posted on 25/2/09 at 08:38 AM |
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that maplins kit is a comparator, as I said.
It works with a 1 K thermisitor that may be tricky to fit into a radiator but the components could be changed to work with a car temperature sender.
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thunderace
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| posted on 25/2/09 at 10:42 AM |
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what engine are you useing ??/
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tegwin
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| posted on 25/2/09 at 12:06 PM |
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2.5L straight 6 from a triumph TR6
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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adithorp
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| posted on 25/2/09 at 03:50 PM |
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quote:
Originally posted by britishtrident
With a fan switch what really matters is the temperature is the temperature at the raddiator outlet
http://www.maplin.co.uk/module.aspx?moduleno=220003
the relay is only rated at 10 amps for controll a fan I would advise slaving a higger rated realy to it. relay
You might want to look at these which can be used with a relay --- I think Maplin also sell them
http://www.jaycarelectronics.co.uk/productView.asp?ID=ST3836&keywords=breaker&form=KEYWORD
[Edited on 25/2/09 by britishtrident]
Are you feeling OK? That post's a bit garbled. Not your usual high standard. 
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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