Compressor - would this work????

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


>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??

Hi Jon,

This is basically what my mate has been using for the last xx years in
his cycle shop. He turns it on at the plug when he needs it (it's
pretty quiet) and I thnik is still left in the (small) fridge complete
with temp sensor <g>. I think he uses the fridge itself for storage!
The outlet is just a flexy hose with a std car valve fitting (no gauge
or trigger, you just hold it on and feel the tyre for pressure) and it
pumps a std cycle tyre up in just a few seconds?

I think he might be on the second one in loads of years ...(but has a
very short duty cycle in his application).

All the best ...

T i m

>>>>>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


> 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

More links:
http://www.onboardair.com/
http://mywebpages.comcast.net/t.molnar/Obair.htm

The Sanden does have the disadvantage that it does not have a separate
sump for lubricant. This is not a major issue and can be overcome by
periodic manual lubrication or an oiler on the air inlet.
It is however more compact. Tends to be the preference for cars these days.
http://members.cox.net/rough-riders2/tech_page/sanden_OBA/sanden.html
http://home.san.rr.com/rambler/jaircomp.htm

David

OK, got myself a Sanden from the local scrappers at the weekend -
lifted from an '89 Saab 9000 - £20 complete with working clutch -
Bargain.

Just need to fabricate a mounting plate and get a driving pully.

Where on a standard Defender 200tdi does the air conditioning
compressor mounting plate fix to? Im assuming its to the bracketry
that fixes the fuel pump to the main block to the rear and to the two
timing cover bolts / flats to the left and below the rubber hosing
that feeds to the thermostat?

Regarding driving the compressor - I know there is a Defender 200tdi
crankshaft pully that hase 3 belts on it (the standard pulley just has
2) but I have been told that i need to change the fan also if i use
this "air-con" pulley.

I propose to remove the top pulley and fan and take it to the local
precision engineers and get them to weld me a pulley to that in the
free space betwen the existing pulley and the fan/viscous coupling.
That way I can gear the compressor up slightly and also get away with
a short belt rather than a long one from the crankshaft pulley. This
new belt would also be clear of any existing obsticles.

Thanks
Jon


On Wed, 22 Sep 2004 08:21:19 +0100, Jon
<[email protected]> wrote:

>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