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Post by noonster on May 23, 2020 11:35:16 GMT 1
Iam looking at getting a better size compressor for my garage/workshop.
I have a old 25ltr compressor now,it struggles blowing more than one tyre up on car.
I am wanting some thing that can easily run air tools.
please any advise on what to buy
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Post by JonW on May 23, 2020 13:13:49 GMT 1
Have a search on here, there have been a few times weve covered this off and the info/advice is still current as its generic.
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Post by zig on May 23, 2020 14:01:08 GMT 1
Iam looking at getting a better size compressor for my garage/workshop. I have a old 25ltr compressor now,it struggles blowing more than one tyre up on car. I am wanting some thing that can easily run air tools. please any advise on what to buy you would need something that can put out around 120psi=8.2 bar / 10.5 cfm=300 lt min at least  |
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Post by Gitram on May 23, 2020 15:33:00 GMT 1
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Post by jon on May 23, 2020 15:43:15 GMT 1
My advice is get the biggest HP and CFM and reservoir you can afford.
Belt driven ones have more longevity normally.
Another thing to consider is power. You can get some good 10+CFM with 50L receivers than still run on a 13amp supply. Any bigger and you probably have to factor into wiring in a heavier supply.
Jon
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Post by huggy76 on May 24, 2020 19:36:32 GMT 1
www.sgs-engineering.com/sc100v-100-litre-high-flow-air-compressorI bought one of these a few months back and am very impressed with it. It runs off a normal 13amp plug and I've had no problems with it tripping my garage electrics etc. I'm sure if you look at the ones in machinemart, apart from the tank being a different colour they are identical but quite a bit cheaper.
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Post by LC_BOTT on May 24, 2020 21:05:37 GMT 1
Funnily enough mine blew it's capacitor to bits a couple of days ago, just waiting for a replacement in the post now. I use it quite often but hadn't noticed until it was needed to pump some tyres up, and tank was at 10psi.
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Post by earthman on May 24, 2020 21:07:14 GMT 1
www.sgs-engineering.com/sc100v-100-litre-high-flow-air-compressorI bought one of these a few months back and am very impressed with it. It runs off a normal 13amp plug and I've had no problems with it tripping my garage electrics etc. I'm sure if you look at the ones in machinemart, apart from the tank being a different colour they are identical but quite a bit cheaper. Yes, they certainly do look very similar, mine has that V twin engine look about it.  I just didn't have the space in the garage for a 100 litre version, I have the 50 litre version, so far I'm happy with it, it's certainly a step up from my first 25 litre one. |
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Post by morgy on May 25, 2020 6:50:13 GMT 1
www.sgs-engineering.com/sc100v-100-litre-high-flow-air-compressorI bought one of these a few months back and am very impressed with it. It runs off a normal 13amp plug and I've had no problems with it tripping my garage electrics etc. I'm sure if you look at the ones in machinemart, apart from the tank being a different colour they are identical but quite a bit cheaper. Yes, they certainly do look very similar, mine has that V twin engine look about it. I just didn't have the space in the garage for a 100 litre version, I have the 50 litre version, so far I'm happy with it, it's certainly a step up from my first 25 litre one. I have the exact same 100ltire unit.. Runs all my air tools, DA, mini detail grinder, Even my Pot blaster (sand Blaster) It even ran all night long after i left it on by mistake and an air line popped, Drank nearly all it's oil and smoked the whole garage out but still works fine!!! |
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Post by JonW on May 25, 2020 14:08:46 GMT 1
In one of the other threads about compressors we chatted about the size of tanks and how that is only one determinator of the size of your compressor. Its more about duty cycle and a real measure of CFM or L/M, not the one in the bumpf as they are often are not an actual measure and why direct drive will never last very long given any real use. Defo worth searching out those threads, that sort of info and advice is always current, models and brands come and go.
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Post by shandyboy on May 25, 2020 16:25:42 GMT 1
be careful when looking at what people advertise the CFM as, they say for example 19cfm but the actual free air displacement on this will be about 11cfm, remember to ask for the total free air as this is what matters |
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Post by JonW on May 26, 2020 2:49:50 GMT 1
be careful when looking at what people advertise the CFM as, they say for example 19cfm but the actual free air displacement on this will be about 11cfm, remember to ask for the total free air as this is what matters exactly! I couldnt think of the term, but yes its FAD. Free Air displacement. There is a lot of BS talked about compressors by the manufacturers sadly. like selling you on a massive tank as well.... Remember the bigger the tank the harder the unit works as well to fill it and keep it filled... |
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Post by ozzysbikes on May 26, 2020 20:35:13 GMT 1
FAD is free air delivered which is the important figure that practically none of the cheapies quote accurately, they quote displacement which is only an indicator of performance, the volume (FAD) produced is what will decide whether or not you can run your air tools without flattening the pressure, a larger vessel is preferable but only delays how long you have before you lose pressure, biggest is best 2.2KW (3hp) is the practical limit on a single phase supply (without wiring in a separate 30 amp supply direct from your consumer unit) don't bother with a tandem unit,
Lots of suppliers of basically the same cheapo units which are ok for DIY use, just go for the biggest by motor power that is within budget and the best deal you can get, I have a small good quality 1.5 hp Toshiba cast iron low revving unit plus a 2.5 hp cheapo to top up if needed, it works very well,
One of the biggest mistakes is trying to run air tools at more than 6 bar (90 psi), a decent air tool in good condition doesn't need more than 7 bar and the volume of air used increases exponentially with pressure and also fxxxs the tool
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Post by Deleted on May 27, 2020 14:56:46 GMT 1
Well put Ozzy, it's surprising how many workshops have their air compressors cranked up to 9 or 10 bar
Air tools are perfectly fine at 6 bar, that's what the instructions on practically every decent air tool say
And the guys wonder why their tools wear out so quickly, no wonder Snap Off make a fortune
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Post by veg on May 27, 2020 18:21:29 GMT 1
Snap on lifetime guarantee most of my tools are snap on or blue point not because I’m a whizz but my brother made his living on the tools and I used to buy his ‘discarded’ tools that he would upgrade every few years.
I often think after I’ve f**ked up well I can’t blame my tools so I am a bad workman 👍
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Post by JonW on May 27, 2020 23:37:13 GMT 1
Be wary of the snapon warranty. It may well say lifetime but they wriggle out if they can and im sure their air tools will be inspected before a claim is allowed and any signs its well used will mean its denied. A good example was when one of my 3(!) roll cabs had a runner issue and they denied the claim as it was 'moving parts'. Hmm, the thing has stickers all over it saying 'Lifetime Warranty' and it was hardly used. I did get a lock n roll plastic slider replaced when it broke for no reason (you hardly move them in use) tho. That was in the UK, I asked about a runner here and the guy just walked away from me laughing and didnt want to discuss any of my tools or storage, didnt want any future business I guess as I'd be 'trouble'.
The warranty is also different depending on where you live. In the USA it seems anything goes and the stuff is cheap as chips. In the UK the stuff is high priced and the warranty is variable, in Aus... well the prices are astronomical and the waranty is a joke.
Ove time I came to realise that lots of other brands offer great tools and often have more interesting products. Bahco, Wera and metrinch spring to mind tho my go to spanners are a set of blue points lol
With air tools I tend to buy the cheaper brands as I dont use them everyday and its often cheaper to buy a couple of air cut offs / die grinders in the Aldi chuck outs for $10 (a fiver in quids) each and just ditch them when they die lol
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Post by Deleted on May 28, 2020 0:24:56 GMT 1
Snap on is the Stanley version of tools in the US, they are sold at flea markets for dirt cheap prices, from what I’ve gleaned Mac Tools are the premium ones in the states now, mind you even that could have changed now
my tools are a mish mash of different brands I’ve bought cause I thought that might be useful or that’s nifty, eg small sprag gear ratchets with infinite anti reverse, great for tight spaces with not a lot of swing room
What’s this got to do with compressors, well they sell them too
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Post by JonW on May 28, 2020 0:49:45 GMT 1
Yes very true Howard, Ive bought almost unused snap on tools in the USA for dirt cheap money over the years.
Ahh, I have just one Mac spanner, it was in the bottom of a tool box i bought years ago so was a freebie. its an 8mm open/ring and is perfect for brake nipples so I use it every time i do brakes. Superb bit of kit lol.
I have a cheapo infinite ratchet from Repco, I think it was under $10 (halve the AUD prices for quid) around last xmas, its defo useful for tight spaces.
I mentioned snap on's warranty to my mate who owns a workshop, he reminded me that the electronics have a very short warranty as he found out when his very exy code reader broke one its connections. Rather than pay to fix it we did it ourselves (oh no! weve opened it and ruined the warranty... that is non existent lol) and then about a month later he handed me a brand new Chinese unit to read my car and when i looked quizically at him he said it cost less than the fixing cost for the snap on so he bought it online to see what its like. Great unit too, reads more cars / modules and much easier to use. if it dies, you just buy another. FWIW Snap on didnt make their one either, it was just a rebranded unit.
Anyway, yes compressors. My mates' workshop unit died (he said we all killed it by doing too much blasting and not letting it catch up, but really it'd been using oil for ever) and it was from the war and came with the shop. He ummed and ahhed (moaned lol) about cost and in the end settled on a bigger version of mine (Peerless, its an Aussie brand - tanks made locally and italian pumps, probably chinese motors) with a huge motor, pump and tank. Its located inside the workshop not outside now so its not stolen as its very shiny lol and it hardly runs up even with 4 mechanics working and when it does its no where near as loud as the one outside, of course drying/blasting means its runs up more but even then its fine on the duty cycle as it can pump more than youre using. Result! Its been zero trouble and uses no oil. Simple to service too. Cost was about $3k and runs on 3 phase of course. Id love to have that in my garage lol.
We did wonder about rebuilding the old unit as you can buy the parts for it, but to be honest why bother when the new ones are quieter. We mights till do that one day, but for now its having a well earned rest lol (hes been in business 32 years and it was well used before he got it of course)
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Post by earthman on May 28, 2020 7:34:02 GMT 1
A lot of Snapon stuff is actually made in China it would seem, seen a few videos of say ratchets being compared,...for the extra high price, I find it hard to justify buying them too.
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Post by steve h on May 28, 2020 10:46:42 GMT 1
I have a lump hammer, molegrips, adjustable spanner (that doubles as a secondary hammer) and a pair of pliers, none are snap on.
PS Forgot the broken handled flat screwdriver that is also my chisel....
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Post by Deleted on May 29, 2020 7:16:00 GMT 1
And you forgot your broken chisel that is also your broken screwdriver lol
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Post by steve h on May 29, 2020 19:04:56 GMT 1
And you forgot your broken chisel that is also your broken screwdriver lol No. Never had a chisel, I spent the chisel money on a piss pot (guzunder)...as I didn't have a pot to pee in. |
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Post by Deleted on May 30, 2020 4:46:36 GMT 1
Does that double as the oil drain pan too? lol
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Post by sandpiper on May 30, 2020 9:11:32 GMT 1
I’ve just purchased a Hyundai 3hp 200 litre compressor from express tools they were the cheapest price at a tad over £500 delivered, it’s got enough air flow to operate impact wrench and impact gun for wheel nuts, and run the tools off a 10mm inside diameter hose hope this helps your search.
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I just didn't have the space in the garage for a 100 litre version, I have the 50 litre version, so far I'm happy with it, it's certainly a step up from my first 25 litre one. 
