Yong Heng compressor ... I just bought 1 ...

[JimD]

I got mine Friday, ordered it Wednesday.  I haven't turned it on yet because the Nuvair oil I ordered at the same time has not arrived - or apparently even shipped.  The manual it came with says on page 3 "ISO VG46 or AW46" for oil and repeats that on page 13 but also adds "...recommend MOBIL 827/829 or equivalent".  I ordered a bigger cooling pump and longer hoses today but will try it with the stock tampon filter for awhile.  I haven't purchased a tank yet so I will be directly filling my Avenger for a little while.  I will probably order a SCBA tank and fill setup after the credit card rolls over. 

The manual also says not to mix oil so I guess I will just wait on the oil I already ordered.  Hopefully it arrives soon.  Hand Pump will have to get me by until it does.  It works but I don't get a lot of shots per fill at 50 ft. lb. tune.  I need to test some slugs this week and probably do a wet paper penetration test too.  But those things shouldn't require a lot of air. 

[tracker1955]

When you get your oil do a slow break-in to seat the rings and wear in the second stage seals before going full out with it and watch that temp gauge closely, they get hot quick when brand new. Good luck with it.

[Firewalker]

I got the first YH clone compressor working today after 3 hours of off and on operation with everything open. I will get the check valve this week so I can blow down the high side while in operation.

I will get the REAL Yong Heng compressor this week and look at them side by side and decide which to keep.

[Ordinary Average Guy]

SKYOWA, I honestly hope that those compressors work well for their owners for a long period of time, makes the portability factor a real game-changer for a lot of people, and the ability to run off 12V is a godsend as well when no 110v is available. The Jury is still out on that one however as to how they'll last. I know Travis Whitney our fearless leader has tested so many of the Chinese compressors, he's managed to kill a lot of them on the test bench, and then there's the availability of parts. Parts are the Achilles heal for most of the little china compressors as they're either hard to locate or are nonexistent.

Only time will tell, for me it's all I could afford after buying the $600 name brand rifle, and now I'm on my third Akela while the compressor runs strong.

[Bob Pratl]

I purchased mine in May 2017, 4 years ago, with a major rebuild kit (still in box) and I have not had any problems since.
I did add a 6" computer radiator and fan which also blows air across the compressor and desiccant filter on the inlet and output.
The YH is only used twice a month now since I moved it to another location. My main compressor is now a Beni Recharge that I bought a year ago.
As Tom stated above, Keep it COOL and the OIL clean and you will get great service out of it.

[JimD]

Longer term, like a few weeks from now, I want a bottle but my plan is to fill my Avenger with the Yong Heng directly for a few weeks to let it run for much shorter periods of time.  I will probably also fill to 3500 initially too.  Break it in slowly.  I'll also keep a close watch on the oil and change it after I get 10 hours or so on it or it gets dark.  I change my new cars after 1500 miles or so.  Oil, even special high pressure compressor oil, is not terribly expensive.  Only filling the relatively small capacity gun should also keep my temperatures low (but I will monitor).

[tracker1955]

That sounds like a really good plan.

[Ordinary Average Guy]

Longer term, like a few weeks from now, I want a bottle but my plan is to fill my Avenger with the Yong Heng directly for a few weeks to let it run for much shorter periods of time.  I will probably also fill to 3500 initially too.  Break it in slowly.  I'll also keep a close watch on the oil and change it after I get 10 hours or so on it or it gets dark.  I change my new cars after 1500 miles or so.  Oil, even special high pressure compressor oil, is not terribly expensive.  Only filling the relatively small capacity gun should also keep my temperatures low (but I will monitor).

From 0-3000psi, it takes my CS2 about 10-11 minutes to fill a 280cc cylinder, after that time, the head temp is only around 118. I typically run the pressure down to 2500 or so, generally two 12 round magazines and then refill, which takes about 3-4 minutes and the temp never reaches higher than 105f, mine is fan cooled so I doubt you'll even make yours sweat.

[JimD]

We should know Friday - I just got a delivery date for the oil. 

I should also have my tank and fill station for it by then but I still plan to hold off at least a few days and let the compressor just fill the gun for awhile.  It would be nice to be able to arrange delivery of all the pieces to a particular point in time but I find that to be challenging.  So I get used to having stuff hanging around a week or so before it gets used. 

[JimD]

Got my Nuvair 751 today and ran the pump a little.  I ran it for 5 minutes with no load and it heated up to about 53 C.  I ran the cooling pump to bring it back down to 26 C.  Then I filled my Avenger from 2000 to about 3500.  It took less than a minute!  Never got to 50 C.  I opened the pump bleed valve to stop the fill but temperature still went up a bit.  I let it vent a minute or so and then shut the air compressor off.  I let the water pump run until the temperature was under 30 C.  Oil looks good and pump seems to be running smooth.  I don't normally shoot on the weekend due to boat traffic (my backyard ends in a lake) so I will probably not run it more until early next week. 

I have a 45 minute SCBA tank sitting beside the Yong Heng and I will fill it after a few more fills of the gun.  I'd rather fill the gun from the tank but I want to break in the Yong Heng slowly.  Gun filling is a bit of a pain on the Avenger, however.  I had to pull the Donny FL adapter due to the filter at the end of the line.  I don't think I want to directly fill my Prod, however.  It holds so little air timing the shutoff could be tricky.  Safer to fill from the bottle.

Nice to fill so quickly with so little effort!

[pdxFrank]

"so little effort"

lol, sure doesn't sound like it.

i gave up on PCPs.  i'd rather shoot than mess around with the gear.

[tracker1955]

Glad you're up and running. Air independence, wooohooo!

[mwgm2020]

Not slamming the YH at all, that was the one I had intended to buy originally, but then I found the GX CS2, it's air cooled and oil free, and is building a solid reputation, I'm maybe 20 fills into mine with zero issues, and I like that I can just haul it to the range, plug it in and go without all the water cooling etc. So far, filling a 280cc tank from 0 to 3000psi has taken roughly 10 minutes, the head temp never climbed above 118F. The fans are high speed brushless, suckers move air like you wouldn't believe

Troy, does the GX CS2 fill guns only or can you fill tanks too?

[JimD]

The description of that 12V compressor on Amazon says it is not for filling bottles - anything larger than 1 liter.  The fill times quoted are also pretty long, relatively, for filling guns.  So that is consistent. 

[Ordinary Average Guy]

The description of that 12V compressor on Amazon says it is not for filling bottles - anything larger than 1 liter.  The fill times quoted are also pretty long, relatively, for filling guns.  So that is consistent.

I purchased it specifically to fill rifles that operate at 3000psi and perhaps a 1.5l tank down the road, the max run time is 25-30 minutes, probably enough to fill a 1L tank to 4500psi in one shot with a good cool down period, a 1.5l wouldn't be overly stressful I wouldn't think, but personally I wouldn't run with anything bigger. It took 12 minutes to fill my Akela's 280cc cyclinder from new empty to 3000psi and hit a max cylinder/head tempt of 108F, I can fill all 3 of my rifles with a total 660cc in about 12 minutes from 2000psi to 3000psi with a max temp of 108F.

The big decider for me was I really didn't want to mess with water cooling and the 12 volt operation, from the reviews I've read, seem to be on the same level overall quality, just trade offs for convenience.

[Bunyboyz]

I made the jump and got the last one from Walmart website. $333 with 4 year warranty and tax.

I’m awfully curious how the warranty works if anyone has tried it.

The wife has a sensitive nose, she can detect a beer drank four hours ago. :-(

Any updated info on best oil for no smell I’d like to use in my sun room.  Thanks.

[tracker1955]

Nuvair 751

[Back_Roads]

I made the jump and got the last one from Walmart website. $333 with 4 year warranty and tax.

I’m awfully curious how the warranty works if anyone has tried it.

The wife has a sensitive nose, she can detect a beer drank four hours ago. :-(

Any updated info on best oil for no smell I’d like to use in my sun room.  Thanks.

In the past I have heard Walmart, just keep the junk one and they send new, due to return shipping cost.
Time will tell