Pretty good deal on twin car compressor, Thumper Max Air Compressor.
I already collected it and tried to inflate a couple of tires, this thing is amazingly fast compared to all portable compressors that I had in the past. Very quiet for portable compressor. And it is big too!
Excludes: WA Remote
It pulls some amps, these aren't like those ones you can run from your ciggy lighter socket.
Anyone who knows air compressors, can you please confirm if this would be suitable to run my pneumatic impact wrench? https://www.amazon.com.au/gp/product/B06W9KFG5S/ref=ppx_yo_d…
I am in two minds about whether to return this wrench as I have seen air compressors can be quite expensive. It was an impulse buy.
No way this tire compressor can run an impact wrench.
You'd need hire pressure and amount of air than this can provide.
Thanks. Roughly what would I need to spend do you think?? Maybe I made a mistake buying this wrench, but it was close to 80% off RRP for a high end brand
How about this compressor: https://www.supercheapauto.com.au/p/blackridge-blackridge-ai…
Seems it was $200 in the past.. now $240.. not too bad? I think this wrench is probably better than any of the battery ones around $400 range so might be worth keeping and buying a decent compressor for it
Can't do any recommendations as I am not experienced enough, just contemplated buying compressor and pneumatic tools myself, but generally you'd be looking at something like https://www.ozbargain.com.au/node/810589 (that's a kit, but to give you some ideas)
Some of the comments here clearly show that people have no idea what they are talking about, however the general consensus that you need air tank (reservoir) is correct.
Firstly, this is a positive displacement pump, meaning it always pushes the same amount of air whilst running. For this Thumper Max that is 300L/min (at 1 atmosphere pressure). Note that this 300L/min is at atmospheric pressure (so 0 gauge pressure (psig), or 14.7 psia / 1 atmosphere / 101.3kPa absolute pressure).
The amount of air coming out of the air compressor is the same as that going in (in terms of weight / mass), however the volume coming out will depend on the pressure at the outlet.
So if the air compressor was just pumping back into the atmosphere you would have 300L @ 1ATM coming in and going out.
If however the the compressor was connected to a device / tank which had 29.4psia / 14.7psig (2ATM), then the volume going into the compressor would still be 300L @ 1ATM, but the volume coming out would be 150L @ 2ATM.
At the moment, when you turn the air compressor on, it will start for less than a second and then trip off, as it has pressurised the air in the 8m hose to 125psig (the hose is acting as your reservoir / tank).
Assuming the 8m of hose has an internal diameter of 6mm, the total internal volume of the hose is just 0.2L.
With the air compressor pushing 300L/min (5L/second), it will take just 0.38 seconds for the pressure in the hose to reach the 125psig cut off switch.
Note if you connect your Hazet Impact Wrench, which uses 127.4L/min (2.12L/sec), you will get 0.25 seconds of usage before the air compressor start back up (air compressor turns back on when pressure drops to below 90psig).
The air compressor will take just 0.19 seconds to repressurise the 8m of hose to 125psig, and then cut off again.
So in short, when using your Hazet Impact Wrench, your compressor will come on for 0.19 seconds, then cut out for 0.25 seconds, then come on for 0.19 seconds, then cut off for 0.25 seconds, etc… (so 0.44 second total cycle time)
So your switch will be cutting in and out as the pressure in your 8m hose bounces between 90psig and 125psig (limit switch).
This will wear out your compressor really quickly.
This is where a tank will come in handy, and act as a buffer between this rapid on/off switching.
For a 5L tank, this compressor will take 8.5 seconds to initially fill it to 125psig. Then when running the Hazet Impact Wrench, will take 5.6 seconds for the pressure to drop to 90psig, then the compressor will start up again for 4.1 seconds to repressure back up to 125psig, and so on… (so 9.7 second cycle time).
For a 20L tank, this compressor will take 34 seconds to initially fill it to 125psig. Then when running the Hazet Impact Wrench, will take 22 seconds for the pressure to drop to 90psig, then the compressor will start up again for 17 seconds to repressure back up to 125psig, and so on… (so 39 second cycle time).
For a 40L tank, this compressor will take 68 seconds to initially fill it to 125psig. Then when running the Hazet Impact Wrench, will take 45 seconds for the pressure to drop to 90psig, then the compressor will start up again for 33 seconds to repressure back up to 125psig, and so on… (so 78 second cycle time).
Please note the above is only a basic explanation / calculation, and does not take into account changes in temperature when pressurising / depressurising the air (which also affect pressure), also internal inertia of the pistons within the air compressor and also limit switch sensitivity will all impact the actual pressures achieved whilst in operation.
It is actually likely that the internal pressure within the hose (when not connected to a tank) will far exceed the 125psig limit switch, which could potentially cause a blowout of fittings, or seals on the compressor (and hence further reduce the compressors life).
This compressor has both enough flowrate (300L/min) and also high enough pressure capability (125psig) to run the impact wrench (which only requires 127.4L/min @ 6.3barg / 91 psig).
See my other comment / explanation, but in short, will want a air tank to ensure smooth operation.
Air requirement: 135 l/min
LOL, no
Return it and buy something like https://www.bunnings.com.au/ryobi-18v-one-impact-wrench-r18i…
Not saying it would work but the thumper says it supplies 300 L/min, why not?
It may work, but you really want a tank for air tools… or you know, just get li-ion ones instead.
The air compressor has the capability to do it, but an air tank will smooth out the operation. See my explanation above.
Nope not without an air tank. Compressors are high pressure low volume.
That said I have two 5L tanks I use with my similar tyre inflator compressor.
This air compressor has both the volume and pressure capability to do it, but as you have noted an air tank should be used to smooth out the operation. See my explanation above for further details.
Just a mild criticism, the resolution of the gauge looks meh.
If i wanted 36PSI it would be hard to tell when you're spot on.
I reckon the gauge stopping at 100PSI might be better.
As it is you'd be forced to use a second device to confirm pressures, probably good practise, but when you're traveling you don't want the kitchen sink.
Extra expense, but since it claims to use quick connect fittings, you could swap it out for another inflator gun with a more accurate gauge. Could still work out cheaper combined than other solutions?
Today I inspected this air compressor, it looks very solid and well made and in the shop it's more expensive than the standard price on eBay. expensive.
In my particular situation I'm planning to power the compressor with an external AC 220V to DC 12V power adapter so I can use it anywhere I want around the house for motorbike, bicycle etc. etc..
But be ware that this toy needs a power of at least 90A in order to work properly so even if you want to connect it to a standard car, bare in mind that you need a lot o power!
Awesome price!