Scored a free Yong Heng

Jump to latest Follow Reply
G

Guest

Guest
Hi all, today I scored me a free Yong Heng or at least that's what I believe it is based on the crank case setup and engine profile:

1588895060_12735439135eb49d54940737.87242400.JPG


In the upper right corner it appears to be missing a muffler/airfilter. Do the Yong Heng's have an input air filter or do they use the brass sintered filter?











Finally, because I'm being silly with the intent of friendly humor among friends; here's the compressor -- but seriously, any ideas on the on the input filter? Thanks to all those wonderful replies and information with these Yong Heng's I was able to give it some very good checks, ensure the crankcase oil breather isn't clogged, clean it up, and get it running. I'll end up dumping some HPA compressor oil that I have lying around into it.

1588895302_3832016315eb49e46e6ce94.60113475.JPG


I hope this post brought a smile to your face, it's intent was friendly and was not an attempt at insulting Yong Heng compressors, it's owners, or it's future purchasers. It was more the intent of "Oh wow, this thing looks like a Yong Heng! Let me share this with my friends!".


 
Of all people to respond I was hoping you'd be one of the three, and bandg is the other -- thank you! That's exactly what I was thinking as well when I first saw it! I helped a friend repair a mower and I have an oil-free RIGID compressor that wouldn't drive a 1/2" impact enough. The crank case, oil breather, oil sight level, missing label placed across the crank case, fan placement, and dimensional sizing really reminded me of a Yong Heng. The upper plastic fan shroud isn't metal but everything downwise of the cylinder look to be Yong Heng?

Where the black broken plastic is opposite from the top of the cylinder head lead-off to the copper tubing there appears to have once been an input filter similar to this which is *not* my picture; I took the ones on this thread. I'm just wondering what the current Yong Heng's use and if there is a better input filter/muffler I can use?

1588902233_5672840485eb4b959536c38.67347209.jpg


Edit: Fixed run-on sentences and punctuation.
 
Upvote 0
If you go into one of your cheap hardware chain stores and have a look at any of the small Chinese handy man compressors of any brand, you will find that they nearly all have common crank-cases, motors and cylinders the same as yours, Y.H, Tuxing, Vevor, Davv and all the other named or unnamed units. Each company adds their own design components to suit the application that they want to fill. Have a look at the V-twin models, they are all the same also. I think that the V-twin and single models even use a common crank-case cover. The Chinese do not reinvent the wheel every time they want to fill a hole in the market. If you want an air filter, just look on eBay, you should be able to find one with the right thread for less that $2. I would plug it in and find out if it works before wasting the $2 though.
 
Upvote 0
It does work, holds pressure, and functions correctly. I was mostly curious because I see the broken part referred to as a "muffler" which made little sense to me. A compressor shouldn't exhaust gas unless there is a leak or someone believes the cooling fan to be exhaust? It's a air intake filter yeah? So this one has the "exhaust" apperance to it and I was curious what the modern Yong Hengs use and if I could just nab one of them and plug it up.

I realize cosmetically it looks abused and neglected but it does function well and it wasn't a dumpster dive acquired device.
 
Upvote 0
I dunno, it looks like a Yong Heng with the tanks removed and a low pressure cylinder installed in place of a high pressure one? Back to my original ask, what is the proper filter to use? Again, I have no problems with Yong Heng, their compressors, or the folks that use them. I'm trying to figure out what a "muffler" is with respect to these and if I need an air input filter or can just spin in a brass sintered valve.

In case you all think I am trolling -- 2020-05-07

1588910332_9039556985eb4d8fc47f712.26591785.JPG

 
Upvote 0
It does work, holds pressure, and functions correctly. I was mostly curious because I see the broken part referred to as a "muffler" which made little sense to me. A compressor shouldn't exhaust gas unless there is a leak or someone believes the cooling fan to be exhaust? It's a air intake filter yeah? So this one has the "exhaust" apperance to it and I was curious what the modern Yong Hengs use and if I could just nab one of them and plug it up.

I realize cosmetically it looks abused and neglected but it does function well and it wasn't a dumpster dive acquired device.
Click to expand...

Yeah, there is only an intake and no exhaust, like all compressors. The Chinese refer to the air filter as a muffler, probably because that's were the noise comes out. You get used to their terminology after a while from looking at their ads and specification lists.
 
Upvote 0
Those are not high pressure tanks and can only hold 200psi-250psi Max. Most finish carpenters use small rigs now, but when I’m doing trim I run my compressor at 115psi for finish nails. You will see a hand twist release on the bottom of the tank for moisture, so make sure to do that since it probably has some gunk in there.
 
Upvote 0
Of all people to respond I was hoping you'd be one of the three, and bandg is the other -- thank you! That's exactly what I was thinking as well when I first saw it! I helped a friend repair a mower and I have an oil-free RIGID compressor that wouldn't drive a 1/2" impact enough. The crank case, oil breather, oil sight level, missing label placed across the crank case, fan placement, and dimensional sizing really reminded me of a Yong Heng. The upper plastic fan shroud isn't metal but everything downwise of the cylinder look to be Yong Heng?

Where the black broken plastic is opposite from the top of the cylinder head lead-off to the copper tubing there appears to have once been an input filter similar to this which is *not* my picture; I took the ones on this thread. I'm just wondering what the current Yong Heng's use and if there is a better input filter/muffler I can use?

1588902233_5672840485eb4b959536c38.67347209.jpg


Edit: Fixed run-on sentences and punctuation.
Click to expand...

Not quite sure what I could add. You seem to have a low pressure compressor that apparently has a larger air intake "muffler" on a head that is different than Yong Heng high pressure heads. I noticed the same a long time ago when the Yong Heng was unboxed and I had another old light duty low pressure compressor in the back of the shop. VERY similar cylinder and crankcase architecture. The Yong Heng I have has a small conical brass air intake piece in place of the "muffler". Is the cylinder and crankcase shown very similar to the Yong Heng? Sure is. Might well be from the exact same manufacturing facility. Much like the DAVV twin cylinder compressors that have a very similar appearance to the cylinders and basic crankcase shape/design and If I recall what I've looked at the Air Venturi and Hatsan Lightning are also similar in appearance. Probably just generic Chinese manufacturing for all, adapted to the specific application. Not at all surprising given Chinese practices (and things being imported from China). All discussion about the relative value of inexpensive vs expensive compressors comes down to individual experiences (and opinions, worth what each person places on them). Many have had failures of the Yong Heng and some have had failures of the "superior" more expensive compressors. I would say simply-buy what your budget will allow. The Yong Heng I bought well over a year ago is still functional and fills my tank when needed. If I had to have bought two more to keep filling I still would be at a very low price compared to the more expensive compressors, but I didn't have to do that. The Yong Heng did the job as needed for me. I have also purchased an MCH6 gas powered compressor. Because I could, not because I had to in order to have air. All relative. The Yong Heng is still running as new when asked to do so and is still set up in the shop and used regularly. The relative value of that inexpensive Yong Heng unit has been extremely high for me. Others may have had different experiences, as some have had with the "better" compressors. Seems there is no one "correct" view on this, just viewpoints.
 
Upvote 0
bandg, I legitimately was not trying to poke at you. I'm honestly surprised at how similar they are and thought it unique/interesting and wanted to share. I was also hoping to be able to pick up a Yong Heng air intake filter and just slap it on this compressor and call it fixed.

I have *zero* bad things to say about the Yong Heng, folks who buy them, folks who prefer them, or folks that modify and fix them. The best compressor is one that works, the worst compressor is one that is broken. :)

Maybe I'll just thread some PVC in there and put some foam in there. I was trying to survey the folks with a Yong Heng to see what they were using for an input air filter and if I could construct something similar. I figured folks filtering the output air were also filtering the input air?

Again, to clarify, I am not trolling nor am I attempting to start another compressor war thread where folks feel the need to justify their purchase or compare and contrast different options.
 
Upvote 0
bandg, I legitimately was not trying to poke at you. I'm honestly surprised at how similar they are and thought it unique/interesting and wanted to share. I was also hoping to be able to pick up a Yong Heng air intake filter and just slap it on this compressor and call it fixed.

I have *zero* bad things to say about the Yong Heng, folks who buy them, folks who prefer them, or folks that modify and fix them. The best compressor is one that works, the worst compressor is one that is broken. :)

Maybe I'll just thread some PVC in there and put some foam in there. I was trying to survey the folks with a Yong Heng to see what they were using for an input air filter and if I could construct something similar. I figured folks filtering the output air were also filtering the input air?

Again, to clarify, I am not trolling nor am I attempting to start another compressor war thread where folks feel the need to justify their purchase or compare and contrast different options.
Click to expand...

No problem. It is a valid discussion about the foundation of these compressors. Obviously they are not engineered/built to the same level as a true dive compressor but if they function well enough then? I did read somewhere (on this forum I think) about someone using a PVC pipe intake apparatus that he made that really seemed to quiet the compressor a lot but I don't recall exactly where that was. Seems that should work fine for what you need and could probably be sourced from your local hardware store. I've never used anything but the stock brass intake with mine. Good luck with it.
 
Upvote 0
Found the post, thank you! I consider you and airgunfans the two resident Yong Heng experts so I appreciate both of you taking the time to respond. Hope you all have a wonderful and relaxing weekend.
Click to expand...

Thanks for the compliment but I'm far from an expert on much of anything, especially these. Mine has been reliable to the point of needing no disassembly. I've rebuilt mower, motorcycle, and auto engines so I wouldn't hesitate to do it but I just haven't had to. It's been bulletproof for well over a year but they do seem to be easy to repair if such is needed. Glad you found the intake post, it seemed useful. Be safe.
 
Upvote 0
Check here: https://fr.aliexpress.com/item/32950527428.html?spm=a2g0o.detail.1000014.1.7f5dd4c9G6LEPg&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.13338.148453.0&scm_id=1007.13338.148453.0&scm-url=1007.13338.148453.0&pvid=328d45d0-e67e-4714-8cd5-4fabedf63803
Click to expand...

Many thanks! Do you think it's an effective filter? It looks like a brass sintered NPT threaded air input but I worry that it's not the same as a good air input filter? It's my understanding that I could have cylinder wear and cylinder scoring/ring scoring. I'm worried the brass sintered input filter or... "muffler" isn't sufficient. What do the current Yong Heng folks use? I realize I'm asking a lot with this LPA compressor but I was just wondering because it seems to have had a paper filter canister that broke off :(

I guess I'll just fabricate one but I honestly wonder if it's even necessary or if an input air filter is obsolete.
 
Upvote 0
I had a circular cut foam core that is about 6" long that fits perfectly into a caulk tube. I cut it off and threaded the nozzle and am using it for the air filter. Works great. Cheap and effective.

I just got done using the compressor and I'm surprised. Legitimately surprised. I hear many posts about how loud the Yong Heng's are. I guess folks have super-sensitive hearing or something. It sounds like a portable shop air compressor. I've got an oil free portable shop compressor and it's just as loud as this Yong Heng. I own a LC-110 and comparing it to the Yong Heng they're both "annoying" to sensitive ears. If I go out in the garage and run the Yong Heng or any other LPA compressor the wife goes "I could hear you running the compressor". If I run the LC-110 out of the basement the wife also goes "I could hear the compressor running".

Crossing "The Yong Heng's are too loud" off my list. I expected the thing to be screaming at me but nope, sounds like any 'ol portable air compressor that is high RPM. If I had to compare and contrast the LC-110 against the Yong Heng for volume my vote would be "Meh, sounds like a compressor is running".
 
Upvote 0
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Resources
Menu