PDA

View Full Version : Workshop compressor



Frenchie
30th May 2011, 04:09 PM
I'm thinking about buying a 240V compressor for the shed. Would be used for general stuff, cleaning, keeping tyres topped up, pressurising portable storage tanks, maybe I'll try some air tools......one of those toys I don't really need but would be nice to have. :angel:

As a starting point Bunnings have a 2.5hp with 24L tank for $99, or the same with 40L tank for $199. Is a bigger tank worth it? Do I need more hp? Should I be looking at the flow rate? Are the Bunnings ones rubbish? Any recommendations?

TIA

LowRanger
30th May 2011, 04:30 PM
For what you say you want to do with it,the 40l model would be fine.Anything smaller is not big enough to run air tools properly.As for quality,I think you will find that all the small direct drive air compressors come out of China and are much of a muchness,they all have to meet the Aust/NZ standards.And providing that you drain it regularly,it should last for years.And at $199,after a few years if it does stop working,you just throw it away.

Wayne

blue_mini
30th May 2011, 04:46 PM
The one with the 24L tank only has a 2 hp motor. Its worth the $40 odd dollars to get the bigger size. They've all got a 1 year home use replacement warranty, so no drama there. Between those and other small machines they're much of a muchness. Colours being the main difference with a lot of them.

If you can get a better deal from supercheap or somewhere, where you get a bunch of air tools with it would make it a better deal.

Youll be struggling to use air grinders or die grinders with a compressor that small. And spraying will have to be smallish areas then wait for the tank to refill.

Blknight.aus
30th May 2011, 05:19 PM
the same compressors are at super cheap, my advice is wait till they have a sale and then you will get your compressor plus some tooling at about the same price.

from memory they sometimes throw a $400ish kit thats got the compressor, a decent hose, tyre inflator (with attachments for inflating sports balls) duster, a rattle gun, air chisel/hammer and some other bits pieces.

pop058
30th May 2011, 06:37 PM
The plastic tubing spiral air hoses that typically come with these compressor will seriously inhibit the air flow rate. OK if you want to inflate a soccer ball or a tyre (maybe 2), but a waste of time when using a die grinder or rattle gun.

If it is going into your shed, look at a retractor reel with 20 or so mts of hose on it.

Bigbjorn
30th May 2011, 08:32 PM
Buy the biggest one that will run on 240 volts even if you have to install a 15 or 20 amp power point. Get one that has 1/2" hose outlets. Flow is most important. Remember, flow gives speed, pressure gives power. Die grinders and HVLP sprayguns need flow, as do high rpm drills, and angle grinders, etc. A decent die grinder will outrun the flow of most 240 volt compressors giving you time to look at the job and scratch your bum whilst waiting for the compressor to refill the tank.

101RRS
30th May 2011, 09:13 PM
I agree with Brian - get the biggest you can afford. I have a 17cfm system (tank is about 75l) and when using some air tools even it runs out of air, so get as big as you can afford as you will want to use it with bigger and better tools after a while.

Garry

Tote
30th May 2011, 10:15 PM
Supercheap do a 200lpm direct connected compressor. I have one and it has been good value for the price. I bought a conventional ie not hvlp spraygun from the states and it works quite hapily for doing chassis work and single panels. Probably wouldnt want to paint a bus with it but it does what I want and was priced well at about $220.00 with a kit of (pretty ordinary) air tools.
Blackridge Air Compressor - Direct Drive, 2.5Hp - Supercheap Auto Australia (http://www.supercheapauto.com.au/online-store/products/Blackridge-Air-Compressor-Direct-Drive-2-5Hp.aspx?pid=168671#Description)
Regards,
Tote

Don 130
30th May 2011, 10:23 PM
My Atlas Copco 8cfm is direct drive and draws a lot of power on start-up.this means either it won't start in some situations or blows fuses or pops circuit breakers especially if used on an extension lead. The electric tool bloke tells me they're all the same, but the belt drive ones draw less. Just something to consider if you don't have a very good power supply. Try borrowing one to see first.
Don.

stealth
30th May 2011, 10:31 PM
My advice for what it is worth- Don't sell yourself short. Your attitude now is that you don't need it but you just want one. Believe me once you have one, it is like welders and oxy sets etc. You won't be able to live without it and will wonder how you ever lived without one. So get the biggest you can get. One that will do all the things you can imagine. Air tools, spray painting, tyres etc. I only wish mine was big enough for sand blasting. At the moment it has just died and is being repaired. Guess what? Have needed it everyday for the last week. Yes. Can't survive without it. The thing with purchases of tools I have always found is that whatever the initial outlay, they always pay for themselves in the long run. Buying tools is an investment in developing your own skills.

pablojac
30th May 2011, 11:14 PM
hi all, purchased a small one(crappy) some time ago recently bought a rattle gun, and no go :(

heard i could set up a gas tank to run as a auxiliary tank and fill that first, any one heard or know about this setup ?

cheers

UncleHo
31st May 2011, 10:55 AM
Have a look at this, www.tradetools.com (http://www.tradetools.com) they should be able to supply a good quality compressor at a reasonable price "Renegade" brand,and they are AUST made and their small one HP130-8 is 2.25 with 130 litres per min Free Air Delivery (FAD) priced @ $328 and they are repairable :)

George130
31st May 2011, 10:42 PM
hi all, purchased a small one(crappy) some time ago recently bought a rattle gun, and no go :(

heard i could set up a gas tank to run as a auxiliary tank and fill that first, any one heard or know about this setup ?

cheers

Yes.
You run lines from the first tank to the second tank and then to your tools. Mate had 5 tanks at one stage. Down side is it took a whole day to get up to pressure but once up never ran out.


As other have said get the biggest you can afford. I bought a farm grade one 8 years ago. Best thing I ever bought. OVer the years you will aquire the air tools.

LowRanger
1st June 2011, 06:57 AM
Have a look at this, www.tradetools.com (http://www.tradetools.com) they should be able to supply a good quality compressor at a reasonable price "Renegade" brand,and they are AUST made and their small one HP130-8 is 2.25 with 130 litres per min Free Air Delivery (FAD) priced @ $328 and they are repairable :)

The problem with this model is that it is only an 8 litre tank.You need a much larger tank to run air tools properly.

Wayne

Redback
1st June 2011, 10:22 AM
Personally I wouldn't buy a direct drive compressor, your much better off with a belt drive compressor, they are much much quieter.

National air compressors


NAC 10 SRT 1,650 (2.2hp) Belt 2cyl 262 L/Min (9.3cfm) 800kpa (116) 40 ltrs $399

Baz.

Frenchie
1st June 2011, 11:04 AM
What do people think of this one? Looks good for the price.

MechPro Belt Drive Air Compressor | Repco | Lasoo Online Catalogues (http://www.lasoo.com.au/offer/air-compressors-accessories/mechpro-belt-drive-air-compressor/4mp0p511o.html'source=category&startNo=17&pageopt=air-compressors-accessories)

Blknight.aus
1st June 2011, 06:36 PM
same basic setup as the one I just finished fixing after its been under about 10m of flood water.

the compressor is available in 2 flavors.

1. compound high pressure one piston compresses the air for the second. good for 250 PSI max if the tank is rated and the reg is set that high.

2. parallel high flow, both pistons feed the tank good for flow and good for about 100 psi nominal out to something like 130psi max. (takes forever to get there but it will get there after you mod the regulator)

going by the listing in the link its the latter and providing you give the compressor an oil change every 100 operating hours (pay a sparky to fit a 240v hour meter across the motor) it'll last an age. another fitting I recomend is an auto drain valve but you can add that later.

worth it, get it.

LandyAndy
1st June 2011, 08:41 PM
Hi Tony.
That one is so much better than the Bunnings cheapies.
Great price too.
Looked after should outlast the equivelent number of cheapies by a long shot.
ENJOY
Andrew

Redback
5th June 2011, 08:53 AM
same basic setup as the one I just finished fixing after its been under about 10m of flood water.

the compressor is available in 2 flavors.

1. compound high pressure one piston compresses the air for the second. good for 250 PSI max if the tank is rated and the reg is set that high.

2. parallel high flow, both pistons feed the tank good for flow and good for about 100 psi nominal out to something like 130psi max. (takes forever to get there but it will get there after you mod the regulator)

going by the listing in the link its the latter and providing you give the compressor an oil change every 100 operating hours (pay a sparky to fit a 240v hour meter across the motor) it'll last an age. another fitting I recomend is an auto drain valve but you can add that later.

worth it, get it.

X2, basically what I have and I paid around the same money, mine is an ABAC.

They are a $800 compressor.

Baz.

Frenchie
7th June 2011, 11:36 AM
Thanks for the help everyone, I bought one of the Repco (Mechpro) ones and glad I spent the extra $.

So far my other half isn't displaying the same level of enthusiasm.....:angel: