Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: omega3000 on 07 October 2014, 21:05:44

Title: Air compressor
Post by: omega3000 on 07 October 2014, 21:05:44
Looking for a cheap air compressor , just for paint spraying and general diy . Not sure what to look for as to the litre size ect ... just been looking and think i need an oil free compressor ?  :-\ seen some on the bay very cheap and near me , any help appreciated  :)
Title: Re: Air compressor
Post by: biggriffin on 07 October 2014, 21:27:12
Biggest you can afford. :y
Title: Re: Air compressor
Post by: omega3000 on 07 October 2014, 21:38:28
Biggest you can afford. :y

50 litre ok  :-\ Does it have to be oil free or is there a bit of kit that takes the oil out on an oil compressor so you can spray with it   ???
Title: Re: Air compressor
Post by: henryd on 07 October 2014, 22:07:51
Biggest you can afford. :y

Yep,especially if you want to run air tools.
Title: Re: Air compressor
Post by: davieboy0312 on 07 October 2014, 22:18:50
I have a 50 litre. Ok for diy and air tools. But as guys say here if you can get bigger it would be better. Sometimes my compressor struggles to keep up
Title: Re: Air compressor
Post by: tidla on 07 October 2014, 22:51:25
Spray painting consumes a fair bit of air.

Constant pressure at the gun is a must for a consistent finish.

Title: Re: Air compressor
Post by: omega3000 on 07 October 2014, 23:03:09
100 litre + then ideally  :) Any spray painting will be just single panels , then it will just be used for air tools ..impact gun or sander / cutting :-\

This one looks ok linky (http://www.ebay.co.uk/itm/100-Litre-Air-Compressor-Spray-Gun-Kit-/181521573713?pt=UK_Air_Tools_and_Compressors&hash=item2a43876751)

Does anyone know what litre the ones from Aldi are ?
Title: Re: Air compressor
Post by: kevinp58 on 07 October 2014, 23:24:43
these are ok. http://www.ebay.co.uk/itm/SALE-SAVE-Wolf-Air-Compressor-3HP-90L-Belt-Drive-14CFM-Twin-Cylinder-/251670515237?pt=UK_Air_Tools_and_Compressors&hash=item3a98bb4e25    :y :y
Title: Re: Air compressor
Post by: cem_devecioglu on 08 October 2014, 08:28:33
100 litre + then ideally  :) Any spray painting will be just single panels , then it will just be used for air tools ..impact gun or sander / cutting :-\

This one looks ok linky (http://www.ebay.co.uk/itm/100-Litre-Air-Compressor-Spray-Gun-Kit-/181521573713?pt=UK_Air_Tools_and_Compressors&hash=item2a43876751)

Does anyone know what litre the ones from Aldi are ?

150 litre minimum and an oil water seperator on the line plus one simple water seperator at the gun tail :y

ps : correct oil level and oil type is critical
 
Title: Re: Air compressor
Post by: aaronjb on 08 October 2014, 09:18:52
Does anyone know what litre the ones from Aldi are ?

Usually 25L
Title: Re: Air compressor
Post by: Nick W on 08 October 2014, 09:26:35
If you're only going to paint panels, then you will get away with a smallish(50litre) compressor and a cheap gun.
Air sanders/grinders/polishers/drills will not work satisfactorily off such a machine, I would consider a 100l tank and 2hp motor to be the absolute minimum for occasional DIY work. Electric tools for these jobs are better to use and cheaper in the long run
Title: Re: Air compressor
Post by: cem_devecioglu on 08 October 2014, 09:48:47
100 litre + then ideally  :) Any spray painting will be just single panels , then it will just be used for air tools ..impact gun or sander / cutting :-\

This one looks ok linky (http://www.ebay.co.uk/itm/100-Litre-Air-Compressor-Spray-Gun-Kit-/181521573713?pt=UK_Air_Tools_and_Compressors&hash=item2a43876751)

Does anyone know what litre the ones from Aldi are ?

150 litre minimum and an oil water seperator on the line plus one simple water seperator at the gun tail :y

ps : correct oil level and oil type is critical

also must note, good quality hvlp guns consume serious amount of air when spraying especiall 1.3 tip and higher.. but if you accept a slower job you can use a 0.8 gun with a 50 litre ..
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 10:36:46
Whats the thoughts on used air compressors ?
Guessing its servic-able . Would rather buy new but if could get one
for 99p  :D
Title: Re: Air compressor
Post by: cem_devecioglu on 08 October 2014, 11:37:58
Whats the thoughts on used air compressors ?
Guessing its servic-able . Would rather buy new but if could get one
for 99p  :D

will be full of dust and oil .. needs lots of solvents and hours of work to clean and if bores are donald money spent for nothing.. gamble imo
Title: Re: Air compressor
Post by: TheBoy on 08 October 2014, 11:42:30
For spraying, you'll need to spend good money to get usable results.

For an impact gun, none of the toy compressors are much cop, better off with a good cordless gun.

The stuff Aldi sell are great for inflating tyres, but not much else.
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 11:49:00
Ok , its going to be mainly for spraying panels so i'll get away with 50 litre yes  :) Think ill buy new and save a whole lot of hassle . Ive got electric grinders
/sanders ect so can do without them being air  :)

Something like this one , got 2 year warranty  :y

50ltr (http://www.ebay.co.uk/itm/Warrior-240v-50ltr-Air-Compressor-7-3Cfm-/171388427851?pt=UK_Air_Tools_and_Compressors&hash=item27e78bde4b)
Title: Re: Air compressor
Post by: TheBoy on 08 October 2014, 12:10:09
I don't think that's man enough, but I'll let those that are actually any good at spraying comment. But definitely hold off the Buy button until they do, as I think you'll be disappointed with that one.
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 12:13:50
I don't think that's man enough, but I'll let those that are actually any good at spraying comment. But definitely hold off the Buy button until they do, as I think you'll be disappointed with that one.

Will do , there are a few that include the spray gun kits / blowers ect so just presuming they are good enough but will see what folk say  :-\

Like this one with all the kit Linky (http://www.ebay.co.uk/itm/Rhyas-High-Capacity-50L-Air-Compressor-9-5CFM-2-5HP-230V-115psi-Workshop-Kit-/321511419442?pt=UK_Air_Tools_and_Compressors&hash=item4adb92ee32)
Title: Re: Air compressor
Post by: henryd on 08 October 2014, 12:21:37
I don't think that's man enough, but I'll let those that are actually any good at spraying comment. But definitely hold off the Buy button until they do, as I think you'll be disappointed with that one.

Will do , there are a few that include the spray gun kits / blowers ect so just presuming they are good enough but will see what folk say  :-\

Like this one with all the kit Linky (http://www.ebay.co.uk/itm/Rhyas-High-Capacity-50L-Air-Compressor-9-5CFM-2-5HP-230V-115psi-Workshop-Kit-/321511419442?pt=UK_Air_Tools_and_Compressors&hash=item4adb92ee32)

Just because it comes with all that stuff doesn't mean its man enough to drive any of it other than the tyre inflator :D
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 12:28:07
I don't think that's man enough, but I'll let those that are actually any good at spraying comment. But definitely hold off the Buy button until they do, as I think you'll be disappointed with that one.

Will do , there are a few that include the spray gun kits / blowers ect so just presuming they are good enough but will see what folk say  :-\

Like this one with all the kit Linky (http://www.ebay.co.uk/itm/Rhyas-High-Capacity-50L-Air-Compressor-9-5CFM-2-5HP-230V-115psi-Workshop-Kit-/321511419442?pt=UK_Air_Tools_and_Compressors&hash=item4adb92ee32)

Just because it comes with all that stuff doesn't mean its man enough to drive any of it other than the tyre inflator :D

That did cross my mind  ;D Probably spray a few model cars  :D
Title: Re: Air compressor
Post by: Marks DTM Calib on 08 October 2014, 12:31:14
Start by looking for something with circa 14cfm if you can, this will be a 3Hp unit but will also be more expensive.

A rough priority order for me would be:

High CFM rating (14cfm ideally)
High HP rating (e.g. 3 which is most you can run of a 13A supply and will go with the CFM requirement)
Tank size - 50 minimum (if the CFM rating is high then the tank does not need to be so big)
Belt drive - generally more efficient so gives higher pressurised air displacement.

A key thing is, are you going to be spraying panels or a whole car. If a whole car then you need a quality spray gun, 100 litre tank and at the biggest compressor you can get. If just panels then a 50 litre tank will give enough stored air to complete the job with a reasonable HVLP gun (which generally operate at circa 50psi) and a smaller rated compressor will do.
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 12:35:38
Start by looking for something with circa 14cfm if you can, this will be a 3Hp unit but will also be more expensive.

A rough priority order for me would be:

High CFM rating (14cfm ideally)
High HP rating (e.g. 3 which is most you can run of a 13A supply and will go with the CFM requirement)
Tank size - 50 minimum (if the CFM rating is high then the tank does not need to be so big)
Belt drive - generally more efficient so gives higher pressurised air displacement.

A key thing is, are you going to be spraying panels or a whole car. If a whole car then you need a quality spray gun, 100 litre tank and at the biggest compressor you can get. If just panels then a 50 litre tank will give enough stored air to complete the job with a reasonable HVLP gun (which generally operate at circa 50psi) and a smaller rated compressor will do.

Ah , thanks for that mark  :y Just for spraying panels , cars and fence panels ect ..

This one has 14cfm Linky (http://www.ebay.co.uk/itm/Warrior-240v-50ltr-V-Twin-Air-Compressor-14Cfm-/171414954952?pt=UK_Air_Tools_and_Compressors&hash=item27e920a3c8)  :)
Title: Re: Air compressor
Post by: aaronjb on 08 October 2014, 12:53:00
That one looks identical to mine - different make but I bet they're all made in the same factory in China..

I haven't tried spraying so I can't comment on that, but it fills the tank fairly quickly and drives the windy gun, ratchet, grinder etc alright for almost every job I've done (besides taking the 32mm wishbone pivot bolts out of the back of a Jag diff which have a cone-shaped seat and took two of us and a 1m jack handle on the breaker bar to get undone ;D)
Title: Re: Air compressor
Post by: omega3000 on 08 October 2014, 12:58:58
That one looks identical to mine - different make but I bet they're all made in the same factory in China..

I haven't tried spraying so I can't comment on that, but it fills the tank fairly quickly and drives the windy gun, ratchet, grinder etc alright for almost every job I've done (besides taking the 32mm wishbone pivot bolts out of the back of a Jag diff which have a cone-shaped seat and took two of us and a 1m jack handle on the breaker bar to get undone ;D)

Thats good to know aaron , so bonus if it runs air tools  :)
Title: Re: Air compressor
Post by: Marks DTM Calib on 08 October 2014, 13:09:22
They will all run air tools......the variable will be for how long  :y
Title: Re: Air compressor
Post by: aaronjb on 08 October 2014, 13:19:19
They will all run air tools......the variable will be for how long  :y

Yeah - it'd be no good in a workshop, for sure ;D But it does alright for the air saw, die grinder etc at home.. although the blades that came with my air saw are a bit … cheap … and tend to heat the metal up more than they cut it ;D

Belt drive would be better, Emd, if you can afford a step up to one rather than a direct drive twin cylinder for the benefits that Mark listed above :y


Really must plumb mine back in - I miss it every time I have to take the wheels off something (yeah, I'm that lazy ;D and have a set of torque-limiting sockets for putting the bolts back in, too)
Title: Re: Air compressor
Post by: henryd on 08 October 2014, 17:04:50
Start by looking for something with circa 14cfm if you can, this will be a 3Hp unit but will also be more expensive.

A rough priority order for me would be:

High CFM rating (14cfm ideally)
High HP rating (e.g. 3 which is most you can run of a 13A supply and will go with the CFM requirement)
Tank size - 50 minimum (if the CFM rating is high then the tank does not need to be so big)
Belt drive - generally more efficient so gives higher pressurised air displacement.

A key thing is, are you going to be spraying panels or a whole car. If a whole car then you need a quality spray gun, 100 litre tank and at the biggest compressor you can get. If just panels then a 50 litre tank will give enough stored air to complete the job with a reasonable HVLP gun (which generally operate at circa 50psi) and a smaller rated compressor will do.

Ah , thanks for that mark  :y Just for spraying panels , cars and fence panels ect ..

This one has 14cfm Linky (http://www.ebay.co.uk/itm/Warrior-240v-50ltr-V-Twin-Air-Compressor-14Cfm-/171414954952?pt=UK_Air_Tools_and_Compressors&hash=item27e920a3c8)  :)

Thats better,if you can run to a bigger tank even better :y
Title: Re: Air compressor
Post by: kevinp58 on 08 October 2014, 17:49:13
Look at my link above it has a 90ltr tank and 14cfm £199 :y the 7.5 won't be enough, :y My old compressor was a 13.5 and only 50ltr tank and it was good enough to spray half of a car at any time so bonnet and side and then boot and other side also could do roof at the same time if I was lucky so for what you want it will be more than ample  :y :y :y you don't need an expensive one like some here say.  :-X
Title: Re: Air compressor
Post by: aaronjb on 08 October 2014, 19:49:50
Missed that link - mine is the same make (WolfAir) but 50L 13.5cfm same as your old one - no problems with reliability so I wouldn't hesitate to get the bigger one you linked to for sure.
Title: Re: Air compressor
Post by: Kevin Wood on 09 October 2014, 09:36:11

Ah , thanks for that mark  :y Just for spraying panels , cars and fence panels ect ..

This one has 14cfm Linky (http://www.ebay.co.uk/itm/Warrior-240v-50ltr-V-Twin-Air-Compressor-14Cfm-/171414954952?pt=UK_Air_Tools_and_Compressors&hash=item27e920a3c8)  :)

A spray painting gun will be no good for spraying fence panels IME. It will go everywhere but on the fence. Better to use a garden sprayer / killaspray type device.
Title: Re: Air compressor
Post by: omega3000 on 09 October 2014, 10:15:07

Ah , thanks for that mark  :y Just for spraying panels , cars and fence panels ect ..

This one has 14cfm Linky (http://www.ebay.co.uk/itm/Warrior-240v-50ltr-V-Twin-Air-Compressor-14Cfm-/171414954952?pt=UK_Air_Tools_and_Compressors&hash=item27e920a3c8)  :)

A spray painting gun will be no good for spraying fence panels IME. It will go everywhere but on the fence. Better to use a garden sprayer / killaspray type device.

I think there is something in one of the kits that allows you to spray this kind of thing ?
Title: Re: Air compressor
Post by: Marks DTM Calib on 09 October 2014, 11:09:42
There is often a paraffin sprayer, rarely seen a fence sprayer.

My experience of spraying fences is not good even with the proper kit, the dame stuff goes everywhere and does not last as its not been forced into the grain in the same way a brush would.  :y
Title: Re: Air compressor
Post by: omega3000 on 09 October 2014, 11:20:21
Ive had good results from thinned down used engine oil on fence panels  ::) Used one of those pump action sprayers . I thought there was one similar in the kit  :-\ 


Heres the sprayer in the kit ..

(http://i219.photobucket.com/albums/cc41/milleblack/20d0c6df-0d9e-4024-ad56-ff0e5414690a_zps90382fd5.jpg)
Title: Re: Air compressor
Post by: Marks DTM Calib on 09 October 2014, 11:40:16
Ah, that's what is described more often than not as a paraffin sprayer, its probably ok with a nice thin mix of creosote and engine oil.
Title: Re: Air compressor
Post by: chrisgixer on 09 October 2014, 17:39:43
Used one of those to spray the garage walls white. Only had a small(tiny) compressor at the time and seemed to work ok.

That's not to say for one momment that it also works for painting bodywork etc, as it won't obviously.


From what little I've encountered of proper painting, a decent regulator is also required. And as far a as I know, not all pumps come with one.
Title: Re: Air compressor
Post by: cem_devecioglu on 09 October 2014, 20:02:55
emd, 0.8 small spray guns will be ok with a 50 litre.. but good brands are more money than a car.. there may be places that sell second hand with a suitable price..but you must physically check and test.. if the needle is damaged you pay for nothing..

satajet is always very good for the job and you may use it for long time..  however, 0.8 tip mini spray is suitable for a 1-2 panels but never for a whole car..  and it always paints better than a 1.3 in terms of orange peel.. also you must check the spray pattern for oval and circular shapes..

even this with some practice can create professional looking jobs
http://www.amazon.co.uk/Bergen-Professional-Pressure-Spray-100mm/dp/B006B3PSQG (http://www.amazon.co.uk/Bergen-Professional-Pressure-Spray-100mm/dp/B006B3PSQG)

ps: from time to time you must seperate the pieces and keep the parts in solvent for a some time