So I bought this compressor out of a necessity of having 3 air tanks and paying 5$ per fill at the scuba shop, only to get it filled to about 4000 PSI. Yong Heng Compressor was a great alternative since I could get a water-cooled compressor with automatic shut off for 300$. Note: Only the 220V Model has automatic shutoff. The 110V doesn't have Automatic shutoff but it allows you to continue filling past 4250 which is a good thing in my opinion.
So I think they raised the price about 20$. It's 204$ for the compressor and basically another 100$ for shipping. Wouldn't it be amazing if the compressor was here in the United States? 200$ for a hit/miss compressor is a good deal in my opinion. Hit or miss because of something I ran into which is likely that future buyers will too. I will get into this later.
It comes in a full-size China Crate. Very good styrofoam and good packaging. Sadly mine did not come with any instructions. So i had to look up youtube videos and the instruction manual online:
https://www.casogo.com/Manual/qibang_30Mpa.pdf
and Youtube videos like this one:
And this one
My first impressions were very good. It is very portable with a handle! It also is extremely tiny and has less length than a ordinary typewriter.
Here is it compared to sunglasses and all the items that come with it.
Now setting it up was somewhat self explanatory after watching the vids. Water intake starts at the bottom of the piston(air piston) and brings water to the top(heat rises) and back into the bucket you will need to provide to cool the unit.
Then you will need to provide your own source of oil to lubricate the unit. I was lazy and got 10w/30 Mobile One synthetic i use for my 1990 Volvo Turbo Wagon
. I think they suggest hydraulic oil in the instruction manual which i will switch asap as the oil is already turning black.
I ordered the 220V version which included the automatic shut off. Not necessarily a good thing since I will now reveal that my gauge is off 400 Psi! Meaning it auto shutsoff at around 3750PSI instead of 4500 or 4250. This is very annoying and I will work on trying to get around it. I also had to do a ton of rewiring from my Air condition plug(I live at a hotel). Wiring was strange since it used the 2 plug pin for 110 devices like iPhone chargers and fans. I had to splice the wires and make custom pins, and new specialized 220v plug sockets that i got from my local electric store. I'd much prefer the a/c plug that comes in the European versions of the compressor. I tried plugging it into the 110V sockets as I was in disbelief that even the tiny water pump took 220V but it was true! 110V sockets just did not cut it, the pump was barely pushing any water. So i had to do some improvising shown here. Get the 110 Version if you want simplicity that is for sure hahah.
Before:
After
Stock Plug
New Plug
Performance:
It fills fast, there is no doubt haha. Filled my tiny paintball tank in like a minute or two. Using semi-icy water I obtained temperatures just below 50 degrees celcius. I believe max temperature that you don't want to pass is 65 degrees(found on another thread on here). Even with big tanks I filled a 75 CUFT 4500 Air venturi from 0- 4500 in around 30-45 minutes(with two breaks, I think).
Cons:
There are some obvious cons with buying a Chinese 200$ Air Compressor. One is that the gauge was so far off so my compressor kept autoshutting off at 3750 PSI instead of 4250 as i would have liked. Only have used it a few times so I will keep you guys updated on that.
Secondly: There is no desiccant or moisture trap. I suggest if you live in humid climates or spilled a bucket of water in your room like I did, to turn on the aircondition and make sure the intake air is dry.
Thirdly: Strange burning smell. Seems normal but smells funny when using it. I guess i need to change the oil asap.
Fourthly: Loud as an air compressor for nail guns. Its to be expected though. Not too bad when you close the door behind you.
Fifth: 220V version comes with strange plugs and autoshutoff feature is only good if your gauge is accurate. Mine was not.
Pros:
As someone who used to fill via Hill Pump(waay back in the day) mk 4 on my wildcat and then upgrading to CF tanks that I had to get filled at the scuba shop for 5$ each, I am greatly satisfied(need more time to tell actually) with the fact that I will pay off the Compressor in 60 Fills! 300$/5$(scuba shop price)=60 fills needed.
It does have its quirks but the quality is actually not bad. They did not make this thing out of plastic surprisingly and they are using a very efficient water cooling method that some 2000$ compressors don't even have( I think some are air cooled). It fills fast. Its simple to setup. So basically, I don't really see why one shouldn't take the dive on giving this compressor a try. I suggest getting the 110V version if you don't want to chance your gauge being off like mine. You will have to watch it fill but I just don't have the guts to walk away from a machine compressing 4500lbs of air. Then again I wouldn't want to be too close to it either.
Score: I'd give it around a 7.5 out of 10.
So I think they raised the price about 20$. It's 204$ for the compressor and basically another 100$ for shipping. Wouldn't it be amazing if the compressor was here in the United States? 200$ for a hit/miss compressor is a good deal in my opinion. Hit or miss because of something I ran into which is likely that future buyers will too. I will get into this later.
It comes in a full-size China Crate. Very good styrofoam and good packaging. Sadly mine did not come with any instructions. So i had to look up youtube videos and the instruction manual online:
https://www.casogo.com/Manual/qibang_30Mpa.pdf
and Youtube videos like this one:
And this one
My first impressions were very good. It is very portable with a handle! It also is extremely tiny and has less length than a ordinary typewriter.
Here is it compared to sunglasses and all the items that come with it.
Now setting it up was somewhat self explanatory after watching the vids. Water intake starts at the bottom of the piston(air piston) and brings water to the top(heat rises) and back into the bucket you will need to provide to cool the unit.
Then you will need to provide your own source of oil to lubricate the unit. I was lazy and got 10w/30 Mobile One synthetic i use for my 1990 Volvo Turbo Wagon
. I think they suggest hydraulic oil in the instruction manual which i will switch asap as the oil is already turning black. I ordered the 220V version which included the automatic shut off. Not necessarily a good thing since I will now reveal that my gauge is off 400 Psi! Meaning it auto shutsoff at around 3750PSI instead of 4500 or 4250. This is very annoying and I will work on trying to get around it. I also had to do a ton of rewiring from my Air condition plug(I live at a hotel). Wiring was strange since it used the 2 plug pin for 110 devices like iPhone chargers and fans. I had to splice the wires and make custom pins, and new specialized 220v plug sockets that i got from my local electric store. I'd much prefer the a/c plug that comes in the European versions of the compressor. I tried plugging it into the 110V sockets as I was in disbelief that even the tiny water pump took 220V but it was true! 110V sockets just did not cut it, the pump was barely pushing any water. So i had to do some improvising shown here. Get the 110 Version if you want simplicity that is for sure hahah.
Before:
After
Stock Plug
New Plug
Performance:
It fills fast, there is no doubt haha. Filled my tiny paintball tank in like a minute or two. Using semi-icy water I obtained temperatures just below 50 degrees celcius. I believe max temperature that you don't want to pass is 65 degrees(found on another thread on here). Even with big tanks I filled a 75 CUFT 4500 Air venturi from 0- 4500 in around 30-45 minutes(with two breaks, I think).
Cons:
There are some obvious cons with buying a Chinese 200$ Air Compressor. One is that the gauge was so far off so my compressor kept autoshutting off at 3750 PSI instead of 4250 as i would have liked. Only have used it a few times so I will keep you guys updated on that.
Secondly: There is no desiccant or moisture trap. I suggest if you live in humid climates or spilled a bucket of water in your room like I did, to turn on the aircondition and make sure the intake air is dry.
Thirdly: Strange burning smell. Seems normal but smells funny when using it. I guess i need to change the oil asap.
Fourthly: Loud as an air compressor for nail guns. Its to be expected though. Not too bad when you close the door behind you.
Fifth: 220V version comes with strange plugs and autoshutoff feature is only good if your gauge is accurate. Mine was not.
Pros:
As someone who used to fill via Hill Pump(waay back in the day) mk 4 on my wildcat and then upgrading to CF tanks that I had to get filled at the scuba shop for 5$ each, I am greatly satisfied(need more time to tell actually) with the fact that I will pay off the Compressor in 60 Fills! 300$/5$(scuba shop price)=60 fills needed.
It does have its quirks but the quality is actually not bad. They did not make this thing out of plastic surprisingly and they are using a very efficient water cooling method that some 2000$ compressors don't even have( I think some are air cooled). It fills fast. Its simple to setup. So basically, I don't really see why one shouldn't take the dive on giving this compressor a try. I suggest getting the 110V version if you don't want to chance your gauge being off like mine. You will have to watch it fill but I just don't have the guts to walk away from a machine compressing 4500lbs of air. Then again I wouldn't want to be too close to it either.
Score: I'd give it around a 7.5 out of 10.
