Yong Heng or similar compressor temperature help!

You’re correct on more wear happens upon start up due to the lack of oil at all the parts initially. But that doesn’t translate to heat from continuous running if the engine. The compressor has one speed and that’s wide open, just think of it as holding your foot to the floor in your vehicle for the entire time you drive it. The radiator and water pump are designed to keep up with normal operations so if you’re going to go and abuse the engine you’ll have to add a bigger radiator like in a race car to keep up. Your temp in the high 40’s is where I keep mine at with no issues. From what I have read, to keep these compressors running for a long time you need to keep the temp down, run it for 15 min at a time and I only fill tanks to 4200psi. Guns I fill to 4500 because that compressor does it so quick there’s not a long period of stress like filling a tank. Some people fill everything to 4500 with no issues but I’m fine with the 4200. I fill a bucket with frozen blocks of ice I make in the freezer and it works perfect and I have the supplied pump. Also crack your moisture bleeder every 5 minutes or so while pumping to help keep the moisture out of the seperator and tanks. 

I also add ice to the bucket of water when using my Yong Heng, and the temp never even gets into the 50s. I stop filling my 60 minute tank at around 4300 psi.

I also put a 7lb bag of ice in a couple inches of water in a 5gal bucket to fill a 109 cu/ft tank . It runs for about 40 minutes without going over 50c

So car engines have a LOT more moving parts, and are toleranced with incredible precision. Those tolerances are only correct when your engine is up to temperature, so yes most wear occurs when you're first starting up your engine. You'll notice a fuel economy increase too. Some guys actually have a heater on their vehicles so it'll pre-heat the engine to run at maximum efficiency and minimum wear right from startup. 

Your YH compressor isn't machined to those tolerances, and won't be expected to run the compressor equivalent of over a quarter million miles either. The piston rings in the second stage are also not metal, last I checked anyway, which I believe is part of the issue with running so hot. The YH is a comparatively cheap thrill, so I wouldn't really worry too much about the start wear. 

As far as temperature goes, a lot of that heat is from compressing the air (obviously) so while the block gets somewhat hot the air tubes get SCREAMING hot. Using icewater does work to get the block temperature down, but ideally you'd want something that can operate steady-state. I've considered looping the air tubes into the cooling loop after the block. I think this'll suck up a lot of the heat a lot more efficiently. The resultant air going into your gun would also be much cooler, so you'd get less PSI loss from bottle-cool-down afterward. 

Just sort of my back-of-the-napkin thoughts on the matter. 

STO,

I've also thought about adding a cooling loop for the air tubes--something like copper blocks clamped to the tubes that either have cooling fins or water passages--as the work compressing the gas is where most of the heat is generated (I have a nice scar on my forearm to remind me how hot those tubes get!)

I filled my 44 cf tank to 3800 psi the first time, which is where the Foster fitting sprung a leak. During that fill I just used room temp water and could fill for about 10-12 min before I exceeded 60C. Once I repaired the fill hose, I added 5 frozen 18 oz bottles to ~3 gal of water in a bucket. I was able to fill the 44 cf tank in 20 min without exceeding 60C. It came up to 55C within a few minutes, then very slowly increased to 59C.

Basically the YH compressor works fine the way it is for me with the exception of moisture. I have the parts to make a moisture separator that will remain pressurized and should make moisture in the tank negligible.


Evan

I only fill my gun with my Yong Heng knockoff as it usually takes less then 1 minute if I shoot it down to 100 bar. In my opinion these inexpensive compressors will run a very long time running only a minute at a time compared to filling large tanks, So therefore I suggest sending your bigger tanks to somebody with a bigger compressor. 

http://www.ebay.com/usr/elektro49?_trksid=p2060353.m2749.l2754

try this guy for cooling fins on all tubing between compression stages.

Looks like the EBay store is closed until 12/1?

ice in water must be better 

For those of us that have Yong Heng compressors, take good care of them because if you have looked at the current prices, they have almost and in some cases doubled from 6 months ago. They no longer are like a disposable item. I should have bought # 2 when the prices were down and I bet I am not alone in my thoughts.

Hey is that a clone Yong Heng all the I see have his name on the cover anyway mine has that little sticker on the cover to y-h model no. Ect.