Author Topic: Yong Heng? Not quite... (Read 37267 times))

jimhenry2000 · « **Reply #100 on:** May 31, 2018, 02:17:15 AM »

Quote from: Cross-sticks on May 30, 2018, 12:41:31 AM

Hi ok I have put teflon tape on i did forget to put some on the go and low pressure tubing but they don't seem to be leaking
Oil is Ingersoll rand select synthetic. The water seems cool to the touch and the top piston doesn't get to hot but the first stage air line is way hotter.

Neil,
Is your oil non-detergent ISO 46? If yes then I am mostly out of ideas. I know that some people use anti-freeze coolant and ice in their water, but I don't. I don't measure the temperature of the water separately but it does not get noticeably warmer to the touch. If you are using the right oil then I suppose you might need to rebuild the pump, or at least stop it frequently and let it cool down.
Jim

Cross-sticks · « **Reply #101 on:** May 31, 2018, 12:42:57 PM »

Ok this might be part of the problem and hopefully well help some of you guys took a close look it the low pressure tubing
And it has a flat spot in it instead of a nice round bend. Thinking this is a choke point causing the raised temperature

Jim yup non detergent compressor oil.

WiseGuy · « **Reply #102 on:** May 31, 2018, 01:42:40 PM »

subscribed...my Vevor was working fine but now it will not make pressure past 300-400 psi. I've swapped out the check valve on the high side and not luck still...I might need to tear it down and look further into it.

Norm_m · « **Reply #103 on:** May 31, 2018, 11:09:09 PM »

I'm thinking f getting one of these compressors on E Bay, within a few weeks

They all seem to be coming from California so I'm guessing it is one vendor

Any ideas or suggestion before I do order one will be greatly appreciated

Cross-sticks · « **Reply #104 on:** June 01, 2018, 12:11:55 AM »

Well if you get one make sure you check to make sure all the fittings are tight and there is no oil or any bits in the lines or cylinders

be4meliz · « **Reply #105 on:** June 01, 2018, 12:44:59 AM »

Quote from: Norm_m on May 31, 2018, 11:09:09 PM

I'm thinking f getting one of these compressors on E Bay, within a few weeks

They all seem to be coming from California so I'm guessing it is one vendor

Any ideas or suggestion before I do order one will be greatly appreciated

Make sure they have good service & feedback- I almost got burned on mine, until I got Ebay on it & ended up with a total refund & a compressor I was able to get working

jimhenry2000 · « **Reply #106 on:** June 01, 2018, 01:57:56 AM »

Quote from: Norm_m on May 31, 2018, 11:09:09 PM

I'm thinking f getting one of these compressors on E Bay, within a few weeks

They all seem to be coming from California so I'm guessing it is one vendor

Any ideas or suggestion before I do order one will be greatly appreciated

Use the right oil, non detergent ISO 46 compressor oil. I use Harbor Freight compressor oil but when I finish that I have a gallon of Royal Purple synthetic compressor oil that I will switch to. Do your first oil change after 15 minutes run time to flush out any debris. I found that after the first three very frequent oil changes, the oil now stays pretty clean. I have just purchased a run time meter to wire in to the pump to better measure my maintenance intervals. Always, always, always start the compressor before you close the low and high pressure bleed valves, and always open them before you turn the compressor off. My Vevor came with a rubber mat to sit the compressor on but if yours does not, find something to run it on to dampen vibration. If your compressor reaches 50 degrees Celsius, shut it down and let it cool. I know the manual says 65 degrees but I prefer to err on the side of caution. As someone else said, make sure all your connections are wrench tight, and also make sure that all fittings that require them have the Delrin washers in them. As an extra measure I also wrap all threads in Teflon or PFTE tape. This is all because the more you can eliminate even the tiniest of leaks, the less hard your compressor will have to work, extending its lifespan. If you need to fill something to 4500 PSI, stop at 4200 and call it good enough, that will save a lot of wear on your compressor. If you need to fill from 0 to 4200 PSI, stop several times to let the pump cool down. Finally, BE LUCKY, as there are good ones and bad ones.

jimhenry2000 · « **Reply #107 on:** June 01, 2018, 02:47:37 AM »

Quote from: Norm_m on May 31, 2018, 11:09:09 PM

I'm thinking f getting one of these compressors on E Bay, within a few weeks

They all seem to be coming from California so I'm guessing it is one vendor

Any ideas or suggestion before I do order one will be greatly appreciated

Norm,
They probably all are from the same vendor. I bought this one but paid $281 with free shipping. Then I had a minor problem and they gave me a 15% credit. I am very happy with both the pump and the vendor. Since they have a Make Offer button, I bet they would take $200.
https://www.ebay.com/itm/30Mpa-High-Pressure-Air-Compressor-Pump-Rifle-Electric-Air-Pump-PCP/122812959066?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

be4meliz · « **Reply #108 on:** June 01, 2018, 09:34:57 AM »

For all with Yong Heng knockoffs, here's a link to Chad Simon's store that has access to some of the hard to locate parts( i just ordered some of the delron 2nd stage seals.
http://lethalprecision.com/
Also a facebook page with some very helpful people:
https://www.facebook.com/groups/505341529804038/
They talk about all these tiny compressors(Tuxing, Yong Heng, Yong Heng Clones)
Just another good source

Tweeter · « **Reply #109 on:** June 01, 2018, 09:58:41 AM »

Thanks Steve, I can't find these seals on his site. Are you talking about the piston rings?

be4meliz · « **Reply #110 on:** June 01, 2018, 10:45:37 AM »

Quote from: Tweeter on June 01, 2018, 09:58:41 AM

Thanks Steve, I can't find these seals on his site. Are you talking about the piston rings?

Look him up on the facebook link I posted(Chad Simon) and put him on messenger- he doesn't list the parts on his store page-sorry about the confusion--need more coffee! LOL

Tweeter · « **Reply #111 on:** June 01, 2018, 10:50:09 AM »

I don't do the facebook thing but I dropped him an email and pictures of what I was looking for. Thanks!

be4meliz · « **Reply #112 on:** June 01, 2018, 11:52:22 AM »

Quote from: Tweeter on June 01, 2018, 10:50:09 AM

I don't do the facebook thing but I dropped him an email and pictures of what I was looking for. Thanks!

Glad to help

Tweeter · « **Reply #113 on:** June 01, 2018, 02:11:00 PM »

Are these the seals you purchased?

be4meliz · « **Reply #114 on:** June 01, 2018, 10:19:23 PM »

Yes, they are-most of the other knockoffs have rings along with the Tuxing-might send one to my friend in Florida and have him make it out of a tougher duro rating- these are pretty soft delron to stand up to the heat & pressure produced. Trying ti find out if he has the1st stage rings, also

Norm_m · « **Reply #115 on:** June 07, 2018, 09:45:02 AM »

Well last night with the help of E Bay's 20% Discount Coupon plus the help of a small counter offer from the vendor I was able to purchase a Yong Heng compressor for $182 https://www.ebay.com/itm/282968982541

Now to get a few needed extras and Royal Purple synthetic compressor oil is at the top of the list. The air/water separator will be next on the list once funds are once again available.

Norm

hilsat · « **Reply #116 on:** June 07, 2018, 05:58:08 PM »

Quote from: Norm_m on June 07, 2018, 09:45:02 AM

Well last night with the help of E Bay's 20% Discount Coupon plus the help of a small counter offer from the vendor I was able to purchase a Yong Heng compressor for $182 https://www.ebay.com/itm/282968982541

Now to get a few needed extras and Royal Purple synthetic compressor oil is at the top of the list. The air/water separator will be next on the list once funds are once again available.

Norm

https://www.ebay.com/itm/110V-High-Pressure-Air-Pump-Electric-PCP-Air-Compressor-for-Scuba-Rifle-30MPA/263615983996?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Picked up this compressor with the 20% off. Hope it's a yong heng but not holding my breath.

Norm_m · « **Reply #117 on:** June 13, 2018, 09:40:57 PM »

Well ran my new Yong Heng compressor tonight and I was a little surprised!

1st I ran it for 30 minutes and the temp went up to 60C

2nd in the 30 minute time it filled my 30 minute tank from 0 to 3000 PSI

3rd the amount of moisture in the air was unbelievable! The little cotton filter in the end of the fill whip was saturated. I turned my tank upside down and opened the valve till no more moister was blowing out. I left the tank upside down and will blow it out again in the morning.

4th I was also a little surprised how hot the tank was when I shut things down.

The oil viewing glass showed the oil was pretty dirty so I did an oil change refilling it with Synthetic ISO 100 oil.

I should be good to go in the morning and will keep track to see how long it takes to go from 3000 or whatever it is after blowing it out and letting it cool till it reaches 4500 PSI. If it is not at 3000 PSI I may top it off and let things cool down. After that I will top it off to 4500 PSI so I will have a pretty good idea how long it should take in the future as I refill my tank back to 4500 PSI when it does get down to 3000 PSI when fill my PCPs

I will try to get some pictures when I have the extra time

dlee · « **Reply #118 on:** June 13, 2018, 10:28:37 PM »

The recirc water on my YH reaches into the low 50's (C) while pumping, but it has not been an issue at all. I understand the desire to run these as cool as possible (and agree with it), but 50-55C, even 60C, isn't going to hurt the system or accelerate any wear and tear, assuming you're running a decent oil in it. Here's a graph where the water temp and the temp of the 1st stage and 2nd stage pipes are being measured by a thermocouple on each pipe as a 6.8L CF tank is topped off from 3500psi to 4500psi. Total run time is about 13 minutes. The water temp reached about 50C (sorry, I converted everything to *F in the graph). Like others, I've never had any troubles with mine and I've filled that 6.8L CF tank from 3200psi to 4500psi at least 10 times now. I change the oil after every 3rd fill and it now always comes out clean. Using Mag One bc that's what I have (but RP is far superior imo).

SteveUK · « **Reply #119 on:** June 14, 2018, 07:01:13 AM »

Quote from: Norm_m on June 13, 2018, 09:40:57 PM

Well ran my new Yong Heng compressor tonight and I was a little surprised!

3rd the amount of moisture in the air was unbelievable! The little cotton filter in the end of the fill whip was saturated.

As you got your yong heng at a bargain price, I suspect it is the cheapo version - the compressors are basically 2 types - simple with 2 pipes, and hardcover with 3 pipes - and the 2 pipe version does not have the oil/water separator with bleed screw on the left hand side looking from the front where the oil view window is

What did you get - 2 or 3 pipe version?

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Yong Heng? Not quite...

Author Topic: Yong Heng? Not quite... (Read 37267 times))