OT: Air Compressor Buying Advice

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D

dht

Guest
Have been offered an air compressor not particularily hot on these things is
this a good 'un'?

Cosmo Air Compressor c/w 5 piece tool kit
1.25HP
1850rpm
115psi
8Bar
6Ltr Tank
22Kgs

5cfm piston displacement
4 cfm free air delivery.

£75 all in

Is this a good buy haven't got a compressor but am tempted for using it to
spray things etc etc.

Thanks for any advice

Cheers
Dave


 
On Mon, 27 Sep 2004 15:55:27 +0100, "dht"
<[email protected]> wrote:

>Is this a good buy haven't got a compressor but am tempted for using it to
>spray things etc etc.

I'm no expert, but I reckon for good spraying you'd need a bigger tank
and possibly more psi.


--
Some Land Roveresque (101 biased), links available
from: http://links.solis.co.uk/Geek/X4_Land_Rover/
I also have a little Land Rover site biased toward
my beloved 101 "Grumble", at: http://www.101fc.net


Reading this in 'alt.fan.landrover'? Did you know
there's a group FAQ: http://www.aflfaq.dyndns.info
 
In message <[email protected]>
"dht" <[email protected]> wrote:

>Have been offered an air compressor not particularily hot on these things is
>this a good 'un'?
>
>Cosmo Air Compressor c/w 5 piece tool kit
>1.25HP
>1850rpm
>115psi
>8Bar
>6Ltr Tank
>22Kgs
>
>5cfm piston displacement
>4 cfm free air delivery.

It's too small for serious spray work, the minimum requirement is IIRC
13cfm and a 150 litre tank otherwise you'll have to keep stopping
waiting for the tank pressure to build up again. You will never get a
constant usable pressure with a 6 ltr tank at 5cfm.

Steve.



--
Vehicle Painting Pointers: http://www.stephen.hull.btinternet.co.uk
Coach painting tips and techniques + Land Rover colour codes
Using a British RISC Operating System 100% immune to any Windows virus.
"Whatever is rightly done, however humble, is noble". Henry Royce
 
On Mon, 27 Sep 2004 15:55:27 +0100, "dht"
<[email protected]> wrote:

>Have been offered an air compressor not particularily hot on these things is
>this a good 'un'?
>
>Cosmo Air Compressor c/w 5 piece tool kit
>1.25HP
>1850rpm
>115psi
>8Bar
>6Ltr Tank
>22Kgs
>
>5cfm piston displacement
>4 cfm free air delivery.
>
>£75 all in
>
>Is this a good buy haven't got a compressor but am tempted for using it to
>spray things etc etc.
>

You won't be using it for spraying, and tools like air saws, DA
sanders will mean using it for a couple of minutes and then waiting
for the tank to charge again. If you're just going to use it for the
odd air-powered tools, then fine. If one of the tools they;'re selling
you with it is a spray gun, then they're taking you for a ride. You
need a minimum of 8cfm for a spray gun, and ideally up to 12cfm. A DA
sander uses up to 16cfm in continuous usage, so ideally you'll need
somethjing that supplys about 8cfm with a 50 or 100 litre tank. A 6
litre tank is a waste of time for most things, excepting blowing up
tyres.

Bear in mind that if you do buy one for spraying you'll need a
dryer/filter and pressure regulator as well, the little knob on the
end doesn't regulate well enough.

Alex
 
On or around Mon, 27 Sep 2004 19:23:28 +0100, Mother <"@ {mother}
@"@101fc.net> enlightened us thusly:

>On Mon, 27 Sep 2004 18:13:10 GMT, Alex <[email protected]>
>wrote:
>
>>the little knob on the end doesn't regulate well enough.
>
>Ah, OFCOM

<splutter>

 
dht wrote:
> Have been offered an air compressor not particularily hot on these things is
> this a good 'un'?
>
> Cosmo Air Compressor c/w 5 piece tool kit
> 1.25HP
> 1850rpm
> 115psi
> 8Bar
> 6Ltr Tank
> 22Kgs
>
> 5cfm piston displacement
> 4 cfm free air delivery.

You'll want at least 12cfm free air delivery and preferably closer to
15cfm to spray effectively. Anything over 100 psi is fine - most air
tools are rated at 90psi and you'll regulate it down to ~30psi for
spraying. As a general guide, you'll want a minimum of a 2HP compressor
to be getting enough air output.

--
EMB
change two to the number to reply
 
> Cosmo Air Compressor c/w 5 piece tool kit
> 1.25HP
> 1850rpm
> 115psi
> 8Bar
> 6Ltr Tank
> 22Kgs
>
> 5cfm piston displacement
> 4 cfm free air delivery.
>
> £75 all in
>
> Is this a good buy haven't got a compressor but am tempted for using it to
> spray things etc etc.
>
> Thanks for any advice
>
> Cheers
> Dave


Reckon its too small to be of any use at all, would be ok for an
airbrush. Is the 6ltr tank a misprint or should it be 60ltr?(which
makes it a little more useful) Also at that displacement it will run
very few tools.

Check out the websites for Machine Mart or Northern Tool Supplies etc.
(Any decent LR owner should have a Machine Mart and Screwfix catalogue
next to the loo along with the back issues). Look for the tools you
are likely to use and what their air needs are. Also the bigger the
tank and displacement, the less you will have to listen to the racket
the things make.

Sean
73FL74 101 GS
1984 110 2.5NA
Medway Military Vehicle Group
www.mmvg.net
 
On 27 Sep 2004 13:38:15 -0700, [email protected] (Sean Ryan)
wrote:

>(Any decent LR owner should have a Machine Mart and Screwfix catalogue
>next to the loo along with the back issues).

I shall forward this to Charlotte. She has odd ideas about my
bathroom (and bedroom) reading habits. I do occasionally think she'd
be far happier if I had copies of "Cheating Housewives" or "Asian
Babes" rather than tool catalogues, technical manuals and assorted
O'Reilly publications...


--
Some Land Roveresque (101 biased), links available
from: http://links.solis.co.uk/Geek/X4_Land_Rover/
I also have a little Land Rover site biased toward
my beloved 101 "Grumble", at: http://www.101fc.net


Reading this in 'alt.fan.landrover'? Did you know
there's a group FAQ: http://www.aflfaq.dyndns.info
 
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