Has anybody checked these out yet"3500hours before maintence?

Those look pretty interesting, especially since they are essentially the same price as a Umarex ReadyAir or Hatsan Volt (albeit those units are also field portable and run off 12 volts). And they advertise these as tank filling capable.

I agree, it looks like they put a motorcycle radiator on it. That should provide some very good cooling. I like the open design for servicing and potential trouble-shooting.

Won't meet the YOdoyle requirement as it doesn't seem like eBay offers up a multi-year protection plan when you put one in your cart. And too bad about the $100 shipping fee, although it does look like these weigh over 70 pounds.

All in all though, these might be worth a look for the price. Who will be the guinea pig on this one???

https://www.ebay.com/itm/DIABLO-AIR-Pro-Fill-1000/254379292162
 
I think they look interesting as well although I doubt they hold a full quart of oil and only a quart of coolant would not be enough to keep the unit cool for long. Also the 3500 hours scheduled maintenance hours is a bit on the ridicules side as there is no way the compressor is going to last long enough to make it to it's first required maintenance stop. It should be more like 35 hours at best between oil changes with the first at far less than that.
 
For what it is worth, I ordered one of these off eBay this morning, and an expected delivery date of Tuesday 1/12 was given.

About a half hour ago I received a 'Picked up' notification from FedEx (on a Sunday?) for an 85# package coming from Scottsdale, and now due for delivery on Wednesday, 1/6.

😁

Nice! Looking forward to hearing your thoughts on it.
 
I've done a bit more internet research this morning and think that I maybe better understand the source of this compressor. Really nothing to be found searching for Diablo Pro-Fill 1000.

I thought at first that it looked pretty close to the Air Venturi HPA compressor. I still think that it might be similar to the Air Venturi HPA compressor, but less complicated and feature rich (like no settable pressure shut off). I was surprised in the eBay listing for the Diablo compressor that they specify using synthetic automotive oil to fill (not compressor oil???) But when I downloaded and read the Air Venturi manual they too say that the compressor can be filled with 5W-40 automotive oil. Learned something new. Pics below of Air Venturi with end cover removed compared to Diablo.

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But Tuxing also has/had a compressor in the identical case/frame, which looks even more like the Diablo. The TXED011. Water cooled, but using an external pump and reservoir. Their videos also say you can fill compressor with 5W-40 automotive oil.

https://us.amazon.com/compressor-Pressure-Cylinder-Paintball-TUXING/dp/B07JNB5H6V





https://www.youtube.com/watch?v=VuWUzq5X4RI





Final assessment (before actual receipt of my eBay compressor): We likely have a Tuxing TXE011 compressor where someone has added an internal pump and an external reservoir/heat exchanger (the motorcycle radiator), and the additional cooling system power switch to the top cover.

Makes me feel a bit more comfortable with my purchase as potential repair parts should be more 'standard' and available since they would be the same used for the Tuxing units.
 
All speculation since I haven't received it yet, but I'm just thinking an in-line pump, and the main 'reservoir' is the volume within the radiator. Will still get good cooling as the water is circulated through the radiator, which gets a lot of air blown right across its fins. Basically the same system as on a car or motorcycle - no 'reservoir' other than the fluid in the radiator and in the hoses/coolant channels.

Pump appears to be shown in the bottom view of the compressor in the eBay pics:

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Well, I have received my Diablo HPA compressor and so far have just unboxed it, and found no surprises. Haven't had time to set it up and test it yet (been trying out 2 new-used rifles I got last night. They are awesome - Thanks autodoc!). So here are some unboxing pics and now I will proceed to set up and test. 

At first was worried as the outer box looked a little worse for wear from shipping. But unit was in an internal wood crate, as seen in the eBay pics. Small dent in one sheet metal cover (shown by arrow in photo), but doesn't bother me in the least and not deep enough to get near any internal component. 

eBay ad description speaks of a built-in hour meter, but I saw nothing in the pics so I got another of the vibration-activated meters from Amazon, which also arrived today.

Here are the initial pics, and off to set it up. Seems like a robust unit, and much larger than my Benjamin ReCharge compressor, but this was expected.

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Well, my compressor is NFG. After going through all set-up and zero pressure break-in, won't achieve more than ~250psi. Yes, psi. Initiated contact with eBay seller and waiting to see what they will say.

This is not a product for someone who just wants to add oil & coolant, plug in and fill guns. Mine had several issues from the start.

While I did not think about it at first, the little LCD temperature indicator should have been on at all times, not just when the compressor was powered up. It runs on batteries. So for the 12 minutes of zero pressure break-in, I just used a handheld infrared thermometer to monitor temperature, which never got above 54C. Not surprising - it had no load on it.

When I first turned on the cooling system, the main fan did not run. I thought that maybe it would only come on at a certain temperature, but then I moved the blade with my finger and it started to turn slowly and loudly. Ultimately I had to use a wooden rod to 'adjust' the fan's position in its housing, after which it ran faster, started up every time and ran much quieter.

Run timer was placed using double sided tape on the base of the compressor, where it would vibration activate when the compressor motor was running, but not when the cooling system alone was running.

All points of air tube connections were checked with CRC aerosol leak detector, but no leaks were found. Just not building pressure.

After about 15 minutes of running the cooling pump sounds like a can of rocks. I think that it might be magnetic drive. Maybe some contaminant was in the cooling system and is in the impeller region of the pump now? Still seems to be moving fluid, just really loud now.

Bummer...

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Well, all hope is not lost. After doing a few things around the house I fired up the compressor again - and it started to make pressure! All the way to 4,500 psi before I shut it off. And it has done this several times now!

WTF? 

My coolant circulation pump still sounds like a shaking can full of nuts and bolts, but I can likely deal with that. Now that the compressor is making some good pressures, I am finding a few fittings which are leaking, which are getting tightened 1 by 1. Also, the bleed valve was not working. Open it up and it bled a little air, but then kept 2,000 psi in the system even with it totally unthreaded and removed. So I pulled out the PTFE seal ring, and there was a little clear polymer ball behind it. Doesn't look smooth and 'precision' enough to be a check-ball, so probably just manufacturing debris. Put things back together without the little ball, and bleed valve works perfectly, just as it should.

Now time to take apart the coolant pump and find out what contaminants are in there. I will likely keep this compressor if it keeps pressuring up. When I fix the coolant pump I might actually try to fill a gun!

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