Compressor - would this work????

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J

Jon

Guest
Hi all,

Whilst driving back from Peterborough, after looking at very expensive
12V compressors I stumbled upon what may be a brainwave!

I quite like the idea of having onboard air for inflating tyres,
air-beds etc etc. But the proper ones are expensive. I also have a
fridge in the garage with a buggered door but the fridge itself works.

Fridges work with compressors don't they?

If I chop off the radiator from the fridge compressor (sorry
environment - CFC's etc etc) I would then have an air inlet and outlet
??

If I bypass the temperature sensor, I think this could then be
connected to the leccy through a 150W 12V invertor (which I already
have). Hey presto, a bit of pipe and jubilee clips and I have a
"free" tyre blower-upper??

There are probably some holes in this theory and I havent started
pulling the fridge appart yet but in theory all should be OK.

My 3 main concerns would be:
1. How much power does a fridge use?
Im guessing but I would think 150W at the invertor would be OK
2. Speed
I cant see this being the speediest thing in the world.
3. Pressure
30 - 35psi isnt a vast amount so hopefully OK?


Has anyone else done this, if so is it a success?? If not i'll just
start tinkering!

Thanks
Jon
 
"Jon" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
< snip>

> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon

I got a 12v one from a Total garage whilst on holiday. £4.50, Blows up tyres
a treat and comes air the air bed etc plastic valve adapters.

Not worth messing around with IMHO.

Lee D


 
At £4.50 I agree!!

On Wed, 15 Sep 2004 12:42:56 GMT, "Lee_D" <[email protected]> wrote:

>"Jon" <[email protected]> wrote in message
>news:[email protected]...
>> Hi all,
>>
>> Whilst driving back from Peterborough, after looking at very expensive
>> 12V compressors I stumbled upon what may be a brainwave!
>>
>< snip>
>
>> Has anyone else done this, if so is it a success?? If not i'll just
>> start tinkering!
>>
>> Thanks
>> Jon
>
>I got a 12v one from a Total garage whilst on holiday. £4.50, Blows up tyres
>a treat and comes air the air bed etc plastic valve adapters.
>
>Not worth messing around with IMHO.
>
>Lee D
>

 
In news:[email protected],
Jon <[email protected]> blithered:
> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
> I quite like the idea of having onboard air for inflating tyres,
> air-beds etc etc. But the proper ones are expensive. I also have a
> fridge in the garage with a buggered door but the fridge itself works.
>
> Fridges work with compressors don't they?
>
> If I chop off the radiator from the fridge compressor (sorry
> environment - CFC's etc etc) I would then have an air inlet and outlet
> ??
>
> If I bypass the temperature sensor, I think this could then be
> connected to the leccy through a 150W 12V invertor (which I already
> have). Hey presto, a bit of pipe and jubilee clips and I have a
> "free" tyre blower-upper??
>
> There are probably some holes in this theory and I havent started
> pulling the fridge appart yet but in theory all should be OK.
>
> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>
>
> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon

A word or two of caution, 1st. environmental damage is possible by release of CFCs
into the atmosphere, 2nd the compressor in your average fridge is a sealed unit,
its only librication comes from the fliud it is compressing, I very much suspect
plain air will not provide sufficient lube nor cooling so I'd think it'll fail in
your suggested configuration rather rapidly. You might have more luck with one
from an industrial cold room or the like but then cost will be back up with the
dedicated tyre pumps.
Alternatively a defunct mobike engine?

--
UR SHGb02+14 &ICMFP
If at first you don't succeed,
maybe skydiving's not for you!


 
"Jon" <[email protected]> wrote in message
news:[email protected]...
> At £4.50 I agree!!
>
> On Wed, 15 Sep 2004 12:42:56 GMT, "Lee_D" <[email protected]> wrote:
>
>>"Jon" <[email protected]> wrote in message
>>news:[email protected]...
>>> Hi all,
>>>
>>> Whilst driving back from Peterborough, after looking at very expensive
>>> 12V compressors I stumbled upon what may be a brainwave!
>>>
>>< snip>
>>
>>> Has anyone else done this, if so is it a success?? If not i'll just
>>> start tinkering!
>>>
>>> Thanks
>>> Jon
>>
>>I got a 12v one from a Total garage whilst on holiday. £4.50, Blows up
>>tyres
>>a treat and comes air the air bed etc plastic valve adapters.
>>
>>Not worth messing around with IMHO.
>>
>>Lee D
>>
>

Quick search found this one at Towsure

http://www.towsure.co.uk/default.asp?s=compressor

It's not £4.50 but it's a starts.

Lee D


 
ok, perhaps wasnt such a good idea - I guess £12.95 for towsure one
will be more than ok for occasional use.

Thanks.


On Wed, 15 Sep 2004 13:28:35 GMT, "Lee_D" <[email protected]> wrote:

>"Jon" <[email protected]> wrote in message
>news:[email protected]...
>> At £4.50 I agree!!
>>
>> On Wed, 15 Sep 2004 12:42:56 GMT, "Lee_D" <[email protected]> wrote:
>>
>>>"Jon" <[email protected]> wrote in message
>>>news:[email protected]...
>>>> Hi all,
>>>>
>>>> Whilst driving back from Peterborough, after looking at very expensive
>>>> 12V compressors I stumbled upon what may be a brainwave!
>>>>
>>>< snip>
>>>
>>>> Has anyone else done this, if so is it a success?? If not i'll just
>>>> start tinkering!
>>>>
>>>> Thanks
>>>> Jon
>>>
>>>I got a 12v one from a Total garage whilst on holiday. £4.50, Blows up
>>>tyres
>>>a treat and comes air the air bed etc plastic valve adapters.
>>>
>>>Not worth messing around with IMHO.
>>>
>>>Lee D
>>>
>>
>
>Quick search found this one at Towsure
>
>http://www.towsure.co.uk/default.asp?s=compressor
>
>It's not £4.50 but it's a starts.
>
>Lee D
>

 

you cold use a crap cheap 12v compressor connected to a receiver that will
fill up slowly and then you have a lot of air on tap. This could be
connected to a pressure switch which would shut it off when it reached the
required pressure, it could also be on a timer so the crappy compressor does
not overheat.





Regards John





"Jon" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
> I quite like the idea of having onboard air for inflating tyres,
> air-beds etc etc. But the proper ones are expensive. I also have a
> fridge in the garage with a buggered door but the fridge itself works.
>
> Fridges work with compressors don't they?
>
> If I chop off the radiator from the fridge compressor (sorry
> environment - CFC's etc etc) I would then have an air inlet and outlet
> ??
>
> If I bypass the temperature sensor, I think this could then be
> connected to the leccy through a 150W 12V invertor (which I already
> have). Hey presto, a bit of pipe and jubilee clips and I have a
> "free" tyre blower-upper??
>
> There are probably some holes in this theory and I havent started
> pulling the fridge appart yet but in theory all should be OK.
>
> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>
>
> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon


---
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Checked by AVG anti-virus system (http://www.grisoft.com).
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in article [email protected], GbH at
[email protected]sm wrote on 15/9/04 14:24:

> In news:[email protected],
> Jon <[email protected]> blithered:
>> Hi all,
>>
<snip>
>
> A word or two of caution, 1st. environmental damage is possible by release of
> CFCs
> into the atmosphere, 2nd the compressor in your average fridge is a sealed
> unit,
> its only librication comes from the fliud it is compressing, I very much
> suspect
> plain air will not provide sufficient lube nor cooling so I'd think it'll fail
> in
> your suggested configuration rather rapidly. You might have more luck with one
> from an industrial cold room or the like but then cost will be back up with
> the
> dedicated tyre pumps.
> Alternatively a defunct mobike engine?

Just out of intrest I used a fride "motor" for a couple of years to power my
airbrush with no real problem but, as pointed out , at £4.50 why bother with
the hastle.

 
Jon wrote:


> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK

IIRC they don't use much power when actually running but draw quite a
bit of power (probably in the order of 1000W) when starting up.

--
EMB
change two to number to reply
 
Jon wrote:

> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
> I quite like the idea of having onboard air for inflating tyres,
> air-beds etc etc. But the proper ones are expensive. I also have a
> fridge in the garage with a buggered door but the fridge itself works.
>
> Fridges work with compressors don't they?
>
> If I chop off the radiator from the fridge compressor (sorry
> environment - CFC's etc etc) I would then have an air inlet and outlet
> ??
>
> If I bypass the temperature sensor, I think this could then be
> connected to the leccy through a 150W 12V invertor (which I already
> have). Hey presto, a bit of pipe and jubilee clips and I have a
> "free" tyre blower-upper??
>
> There are probably some holes in this theory and I havent started
> pulling the fridge appart yet but in theory all should be OK.
>
> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>
>
> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon

1. Starting load would require an inverter in the 1500VA range - this would
cost more than a good 12v compressor.
2. Speed should be OK
3. Pressure should be OK

But..... These sealed units rely on the refigerant for lubrication. This
could be bypassed by adding an oiler and the an oil trap on the air line -
but it starts to get complicated, doesn't it?
Release of the refrigerant to the atmosphere is not a good idea (adds to
stratospheric Flourine ions that degrade the ozone layer that reduces UV at
the surface), but it probably happens in the case of most scrapped
refrigerators.
The most practical application along these lines is the use of an older type
of car air-con compressor driven off the engine - some of these apparently
run for a long time without lubrication.
JD
 
JD wrote:

> The most practical application along these lines is the use of an older type
> of car air-con compressor driven off the engine - some of these apparently
> run for a long time without lubrication.

The Tecumseh 2 cylinder A/C compressors commonly found on older American
V8's have their own spearate sump for lubrication and work really well
in this application without the need for auxiliary oiling.

--
EMB
change two to number to reply
 
In article <[email protected]>, Lee_D
<[email protected]> writes
>"Jon" <[email protected]> wrote in message
>news:[email protected]...
>> Hi all,
>>
>> Whilst driving back from Peterborough, after looking at very expensive
>> 12V compressors I stumbled upon what may be a brainwave!
>>
>< snip>
>
>> Has anyone else done this, if so is it a success?? If not i'll just
>> start tinkering!
>>
>> Thanks
>> Jon
>
>I got a 12v one from a Total garage whilst on holiday. £4.50, Blows up tyres
>a treat and comes air the air bed etc plastic valve adapters.
>
>Not worth messing around with IMHO.

Likewise. I have one in each vehicle. SWMBO has the posh one - with the
switch in the cable. They benefit from being stripped and oiled from
time to time, as the construction is crude, but then again, given what
they cost, it's hardly worth it...


Regards,

Simonm.
(who does mend things anyway, as it's kinder to the environment)

--
simonm|at|muircom|dot|demon|.|c|oh|dot|u|kay
SIMON MUIR, UK INDEPENDENCE PARTY, BRISTOL www.ukip.org
EUROPEANS AGAINST THE EU www.members.aol.com/eurofaq
GT250A'76 R80/RT'86 110CSW TD'88 www.kc3ltd.co.uk/profile/eurofollie/
 
EMB wrote:

> JD wrote:
>
>> The most practical application along these lines is the use of an older
>> type of car air-con compressor driven off the engine - some of these
>> apparently
>> run for a long time without lubrication.
>
> The Tecumseh 2 cylinder A/C compressors commonly found on older American
> V8's have their own spearate sump for lubrication and work really well
> in this application without the need for auxiliary oiling.
>
Thanks - these would be the ones i was thinking of, but couldn't remember
details.
JD
 
There was a bloke up the road from me who used sell compressors in the local
rag so went to have a look , they were homemade from fridge compressor and
he used a 15kg calor gas cylinder as the receiver. It worked a treat, would
run a impact wrench spray equipment etc no prob... But I ended up buying a
proper job cos I did'nt fancy bits of scrap stuck in me when it all went
wrong...!
So can be done but i think by the time you have payed out for safety valves
and regulators air lines etc it would be as cheap to buy a complete kit from
somewhere.
Hope this helps
Icky
"Jon" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
> I quite like the idea of having onboard air for inflating tyres,
> air-beds etc etc. But the proper ones are expensive. I also have a
> fridge in the garage with a buggered door but the fridge itself works.
>
> Fridges work with compressors don't they?
>
> If I chop off the radiator from the fridge compressor (sorry
> environment - CFC's etc etc) I would then have an air inlet and outlet
> ??
>
> If I bypass the temperature sensor, I think this could then be
> connected to the leccy through a 150W 12V invertor (which I already
> have). Hey presto, a bit of pipe and jubilee clips and I have a
> "free" tyre blower-upper??
>
> There are probably some holes in this theory and I havent started
> pulling the fridge appart yet but in theory all should be OK.
>
> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>
>
> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon


 
JD wrote:

> Release of the refrigerant to the atmosphere is not a good idea (adds to
> stratospheric Flourine ions that degrade the ozone layer that reduces UV at
> the surface), but it probably happens in the case of most scrapped
> refrigerators.

We have our refrigeration repairs scrubbed out by the local
refrigeration engineer, who will evacuate all the old CFC and recover it
into a tank for destruction or reprocessing. Costs me about a fiver a time.

Steve
 
On Wed, 15 Sep 2004 13:13:15 +0100, Jon
<[email protected]> wrote:

>
>
>My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>

Hi

Only 3 concerns nothing like looking on the bright side

Will it work

in one word no

1) it will use more than 150w
2) the compressor needs oil
3) the compress valves wiil leak because they will rust,, air has
water in it
4) I could go on

John
-------------------------------------
O C Outdoor
www.occuk.co.uk/outdoor
--------------------------------------
 
>>>The most practical application along these lines is the use of an older
>>>type of car air-con compressor driven off the engine - some of these
>>>apparently run for a long time without lubrication.
>>
>>The Tecumseh 2 cylinder A/C compressors commonly found on older American
>>V8's have their own spearate sump for lubrication and work really well
>>in this application without the need for auxiliary oiling.
>>
>
> Thanks - these would be the ones i was thinking of, but couldn't remember
> details.
> JD

There's lots out there - search for "on board air". One of the
advantages of going down this route is that get volume - something
rather lacking in the cheap and nasty electric solutions. Try these for
a start:

http://www.jedi.com/obiwan/jeep/yorkair.html
http://www.totalparadox.com/jeep/pics/mods/html/oba.htm

You can also find stuff about using Sanden compressors - but I've lost
the links.

David

 
No this will not work. You will not be able to get CFM's desired.

I had a similar idea and fabed together a "York" air compressor. I picked
the compressor up at a salvage yard for $25.00 US. This was a common
auto/truck A/C compressor; from the Porsche 911 to a American Ford truck
this was the choice compressor. The piston is lubed in its own oil bath; I
used 30W dino oil. I've had many years of trouble free service.

Do a Google search on "onboard air compressors." You will find many DIY York
installs. It worked for me!

Good Luck!

"Jon" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Whilst driving back from Peterborough, after looking at very expensive
> 12V compressors I stumbled upon what may be a brainwave!
>
> I quite like the idea of having onboard air for inflating tyres,
> air-beds etc etc. But the proper ones are expensive. I also have a
> fridge in the garage with a buggered door but the fridge itself works.
>
> Fridges work with compressors don't they?
>
> If I chop off the radiator from the fridge compressor (sorry
> environment - CFC's etc etc) I would then have an air inlet and outlet
> ??
>
> If I bypass the temperature sensor, I think this could then be
> connected to the leccy through a 150W 12V invertor (which I already
> have). Hey presto, a bit of pipe and jubilee clips and I have a
> "free" tyre blower-upper??
>
> There are probably some holes in this theory and I havent started
> pulling the fridge appart yet but in theory all should be OK.
>
> My 3 main concerns would be:
> 1. How much power does a fridge use?
> Im guessing but I would think 150W at the invertor would be OK
> 2. Speed
> I cant see this being the speediest thing in the world.
> 3. Pressure
> 30 - 35psi isnt a vast amount so hopefully OK?
>
>
> Has anyone else done this, if so is it a success?? If not i'll just
> start tinkering!
>
> Thanks
> Jon


 
these might be of interest...

item 2490028538 on ebay & some light
reading...http://www.huv.com/jon/jeep/Air/index.html (it's on a J**P, but
don't see why it couldnt be modified to run in a landy).

rav

"Jack Kerouac" <[email protected]> wrote in message
news:5kK2d.85$uz1.5@trndny03...
> No this will not work. You will not be able to get CFM's desired.
>
> I had a similar idea and fabed together a "York" air compressor. I picked
> the compressor up at a salvage yard for $25.00 US. This was a common
> auto/truck A/C compressor; from the Porsche 911 to a American Ford truck
> this was the choice compressor. The piston is lubed in its own oil bath; I
> used 30W dino oil. I've had many years of trouble free service.
>
> Do a Google search on "onboard air compressors." You will find many DIY
York
> installs. It worked for me!
>
> Good Luck!
>


 
Ok, this looks like the road i want to go down. mechanical
compressor, belt driven.

All the reading i have done from the links suggested (+more) indicate
that the 10 cu in York Compressor is the one to go for. Lots of
references to American cars with this unit in but no definate
references to UK cars...

Anyone know what car's these units came in?

Also, are the Sanden units "as good"? If so what UK cars are these
in?

Thanks
Jon

On Thu, 16 Sep 2004 21:26:01 +0100, Dougal
<DougalAThiskennel.free-online.co.uk> wrote:

>>>>The most practical application along these lines is the use of an older
>>>>type of car air-con compressor driven off the engine - some of these
>>>>apparently run for a long time without lubrication.
>>>
>>>The Tecumseh 2 cylinder A/C compressors commonly found on older American
>>>V8's have their own spearate sump for lubrication and work really well
>>>in this application without the need for auxiliary oiling.
>>>
>>
>> Thanks - these would be the ones i was thinking of, but couldn't remember
>> details.
>> JD
>
>There's lots out there - search for "on board air". One of the
>advantages of going down this route is that get volume - something
>rather lacking in the cheap and nasty electric solutions. Try these for
>a start:
>
>http://www.jedi.com/obiwan/jeep/yorkair.html
>http://www.totalparadox.com/jeep/pics/mods/html/oba.htm
>
>You can also find stuff about using Sanden compressors - but I've lost
>the links.
>
>David

 
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