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naughtyboy Articulating
Joined: 01 Jan 2006 Odometer: 966 Location: west yorks
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Posted: Thu Sep 29, 2011 4:07 pm Post subject: 24v from 12v
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have just aquired a in cab diesel heater from a wagon.
not sure which one as guy runs a small breakers and done swap for disco doors.
prob is its 24v how can i get 24v from 12v?
am running twin batss to run extras, or am i better fitting second alt where air con should be?
if so how do i wire it up?
hope this makes sense cheers
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bazza_413 Just got MTs
Joined: 28 Aug 2006 Odometer: 258 Location: Eastbourne
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Posted: Thu Sep 29, 2011 6:08 pm Post subject:
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What current draw does the heater have?? You can get 12 to 24 volt converters but they tend not to have to high a current output. You can set up dual alternators but you need to ensure the positive side is fully isolated.
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spannerman69 Mud Obsessed
Joined: 01 Oct 2003 Odometer: 2807 Location: st.helens
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Posted: Thu Sep 29, 2011 7:33 pm Post subject:
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is this for the project ? .
also have you considered a arctic heater in its place .
__________________________________ member of the dcjc |
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naughtyboy Articulating
Joined: 01 Jan 2006 Odometer: 966 Location: west yorks
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Posted: Fri Sep 30, 2011 6:24 am Post subject:
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no its for mine as heater in it is useless and we are going to iceland next year.
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. Difflock Royalty
Joined: 19 Jun 2002 Odometer: 40007 Location: Northern Ireland's Gold Coast
2009 Land Rover 110 CSW
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Posted: Fri Sep 30, 2011 7:08 am Post subject:
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Is it an electric heater or just an electric blower?
__________________________________ Bert the Defender 110 XS - because it's Cool (work it out yourself!)
Lolita the Lightweight
???? the V8 90 CSW
Suzuki DL1000 V-Strom - yes that's right, I have a Zook! |
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naughtyboy Articulating
Joined: 01 Jan 2006 Odometer: 966 Location: west yorks
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Posted: Fri Sep 30, 2011 11:20 am Post subject:
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its a diesel powered one but timer etc is 24 v
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. Difflock Royalty
Joined: 19 Jun 2002 Odometer: 40007 Location: Northern Ireland's Gold Coast
2009 Land Rover 110 CSW
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Posted: Fri Sep 30, 2011 11:29 am Post subject:
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Have you tried connecting it to 12 volts to see if it works? You might be surprised!
__________________________________ Bert the Defender 110 XS - because it's Cool (work it out yourself!)
Lolita the Lightweight
???? the V8 90 CSW
Suzuki DL1000 V-Strom - yes that's right, I have a Zook! |
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jeepmadmike Mud Obsessed
Joined: 08 May 2005 Odometer: 4573 Location: between 6000+7000 rpm and Devon
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Posted: Fri Sep 30, 2011 11:50 am Post subject:
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There was a thread on here ages ago about the problem
Im sure the guy just used a 12-24v converter
__________________________________ Land Rovers are the root of all evil!
Now i have gone and bought a D4!
one day i might buy a 86" series one like my dad had when i was a boy. |
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naughtyboy Articulating
Joined: 01 Jan 2006 Odometer: 966 Location: west yorks
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Posted: Fri Sep 30, 2011 11:56 am Post subject:
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must admit havent tried it on 12v.
hes bringing it up tonight.
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mrcheese Mud Obsessed
Joined: 14 Oct 2003 Odometer: 6339
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Posted: Fri Sep 30, 2011 12:57 pm Post subject:
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I would rig up a 24V supply using two car batteries and measure the current taken. That would allow the right decision to be made.
You might consider a 12V to 240V inverter. Then a suitable 24V adapter.
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naughtyboy Articulating
Joined: 01 Jan 2006 Odometer: 966 Location: west yorks
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Posted: Fri Sep 30, 2011 1:07 pm Post subject:
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that would be easier mr cheese as already got inverter fitted
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Kitesurf Difflock Royalty
Joined: 28 Feb 2005 Odometer: 14197 Location: Luton, Beds
1994 Toyota Surf
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Posted: Fri Sep 30, 2011 2:54 pm Post subject:
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naughtyboy wrote: | its a diesel powered one but timer etc is 24 v |
The timer/igniter circuit on these heaters shouldn't draw too much current and 12V to 24VDC converters are available. Is it an Eberspacher (spelling) heater? If so, it may be dual voltage as they are now popular in motor homes and camper vans.
__________________________________ Motorist who drove his 4x4 up Snowdon sentenced to appear on Top Gear. |
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teamidris Mud Obsessed
Joined: 24 Feb 2008 Odometer: 3372 Location: Staffordshire UK
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Posted: Fri Sep 30, 2011 6:37 pm Post subject:
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I believe you can charge a totally isolated 24 volt system by the 12 volt car electrics. You fit a timer and alternately charge the 12 volt batteries in turn. Just like you were taking turns to charge two cars with flat batteries with jump leads. The theory is sound, but no one will try it Pussies
Or: The glow plug is the problem, as it's 24volt. We didn't think it senced the current at the controller, so it could be replaced with a 12volt glow plug driven by a relay from the 24volt circuitry. As the fan doesn't use much power, it should be okay being powered by a 12-to-24 converter.
Or: A friends canal boat nearly sucessfully charged batteries off a 240volt battery charger. So a small 24volt charger should run off a good inverter. But the switchmode system of the charger wasn't that keen on the square wave output of the inverter? Washing machines wern't happy either.
But when all said and done, the 24volt erbaspacer works bettter than the 12volt, which I have 2 of, and both drop out on startup with a slightly low battery
So I got this; http://www.lockgate-stoves.co.uk/ and it doesn't use leccy Though not much use while moving, it's a good static heater
__________________________________ https://m.youtube.com/channel/UC3l3zoaCabKrgBSULSV1YgA |
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bazza_413 Just got MTs
Joined: 28 Aug 2006 Odometer: 258 Location: Eastbourne
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Nathaniel Difflock Royalty
Joined: 13 May 2003 Odometer: 17901 Location: North, North Yorkshire
1979 Suzuki LJ
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Posted: Sun Oct 09, 2011 10:38 pm Post subject:
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24v Eberspacher CANNOT be economically converted from 24v to 12v...
Its not worth it.
I looked at this for fitting my 24v eber to my fourtrak.
This was the thread
http://forum.difflock.com/viewtopic.php?t=21087&highlight=
I never did it, I bought a Soft top Landrover 109, which needed the heater more than the fourtrak!
Happily the Landy was ex army and was already 24v!
__________________________________ Nat
If You Open Your Mind Too Much Your Brain Will Fall Out |
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cynic-al Mud Obsessed
Joined: 14 Nov 2006 Odometer: 6062 Location: scunthorpe
1989 Suzuki SJ
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Posted: Tue Oct 18, 2011 3:40 pm Post subject:
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you could always sell the 24v and buy a 12v
__________________________________ I know enough to be dangerous. |
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