Buying a compressor, what is best choice...

I was in the lab today checking on a nitrogen generator and seen this had to laugh every time I think about air gunners using these lab filters on air compressors I have to laugh this one is being used to purify argon
1561388410_9802198015d10e57a452840.96456470_20190624_104616.jpg

 
just so you guys know those lab filters are used on argon and nitrogen and solvent that have already been processed(meaning dryed and filtered) they are never used on compressors atleast not here they aren't used on nitrogen generators either. I wish I could find the lab where they were using one of those gold ones I see on all the diy fill stations
1561389442_19956972065d10e982d263a5.73610251_20190624_104657.jpg

 
The LC-110 is based upon a proven dive compressor design that Coltri has sold for over two decades.



True, but key words (I think?) dive compressor design. The Coltri was designed for Divers, Divers from what info I could find, typically only fill to 3000 psi. So for me, it is conceivable that a compressor that was possibly designed primarily for 3000 psi. fills but can handle 4500 psi. may last longer if one only fills to 3000 psi as opposed to the same compressor that is primarily used at the upper limits of it's design.


 
True, but key words (I think?) dive compressor design. The Coltri was designed for Divers, Divers from what info I could find, typically only fill to 3000 psi. So for me, it is conceivable that a compressor that was possibly designed primarily for 3000 psi. fills but can handle 4500 psi. may last longer if one only fills to 3000 psi as opposed to the same compressor that is primarily used at the upper limits of it's design.

One of the things that has always concerned me is the lack of duty cycle information associated with all the compressors in this hobby. Anyway, the LC-110 is based on the Coltri MCH-6 3E. It's rated to 4500 PSI by Coltri. Daystate didn't take a compressor rated for 3000 PSI max operating pressure, remove a stage, remove the breathable air filter, and sell it to us as the LC-110 capable of 4500 PSI/310 bar. See https://www.nuvair.com/mch6-portable.html

Based on my FLIR images I have no idea what the thermal runaway point is where duty cycle exceeds cooling capability. I've been operating under the assumption a light duty cycle places less stress on the unit and results in less wear and tear and heat build-up. It's one of the sole reasons I've not purchased a larger tank and continue to use the 90cu-in Ninja tank. The duty cycle is very light -- 2 minutes warm-up, 2-3 minutes top-off, 2 minutes cool down. ~10 minutes give or take is how I'm treating it with hash marks before oil change.

It's not a PITA with the smaller tank but as we know in this hobby use cases and solutions vary. I get 4 fills on my Brocock Commander 480cc bottle before I have to top it off again. That's about 40-50 rounds * 4 fills = ~250 rounds or half a tin of CPD before I step inside and refill the bottle in under 10 minutes. At the rate of fire I'm doing that's about an hour to an hour and a half of solid shooting. I tend to shoot at 50 - 110 yards so I'm always set on max power which uses more air but results in 960 FPS MV using 14.3gr CPD.
 
True, but key words (I think?) dive compressor design. The Coltri was designed for Divers, Divers from what info I could find, typically only fill to 3000 psi. So for me, it is conceivable that a compressor that was possibly designed primarily for 3000 psi. fills but can handle 4500 psi. may last longer if one only fills to 3000 psi as opposed to the same compressor that is primarily used at the upper limits of it's design.

Daystate didn't take a compressor rated for 3000 PSI max operating pressure, remove a stage, remove the breathable air filter, and sell it to us as the LC-110 capable of 4500 PSI/310 bar. See https://www.nuvair.com/mch6-compact.html

I believe you misread what I posted. I own a Daystate, I am familiar with Nuvair and even reached out to them. 

What I was trying to convey is if you had a car and it was designed for a max speed of 100mph and you only drove 50 mph, IMO the car would last longer if only driven 50 mph than 100 mph. 


 

Daystate didn't take a compressor rated for 3000 PSI max operating pressure, remove a stage, remove the breathable air filter, and sell it to us as the LC-110 capable of 4500 PSI/310 bar. See https://www.nuvair.com/mch6-portable.html


Not interested at all in arguing, but the Daystate 110 compressor's did go from 3 stage to 4 stage back to 3 stage???

Also

Coltri: 

The MCH6 Portable is designed for filling scuba, SCBA, or paintball cylinders/tanks one at a time. The compressor was not engineered or manufactured for continuous duty filling of storage tanks or cascade storage systems of any kind.

https://www.nuvair.com/mch6-portable.html

Daystate:

Ideal for gun shops, shooting clubs or the precharged airgunner who wants his independence, Daystate's latest Type 2 electric air compressor takes the effort out of charging up a PCP rifle or scuba tank.

https://www.airgunsofarizona.com/compressors/daystate-type-2-4500-psi-compressor-with-auto-shutoff-220v/

Now me personally, after reading the Coltri statement I would not think the MCH6 110 or 220v would be a good fit for a gun or shooting club. 

Interesting observations IMO :)








 
I believe you misread what I posted. I own a Daystate, I am familiar with Nuvair and even reached out to them. 
What I was trying to convey is if you had a car and it was designed for a max speed of 100mph and you only drove 50 mph, IMO the car would last longer if only driven 50 mph than 100 mph. 


I think you are misreading the intent of my reply, I was agreeing with you and then circumstantially opining about the LC-110 being a purpose built machine, albeit without a clearly defined duty cycle, unlike some of the alternatives which originate from inexpensive origins.

I own a LC-110 and I like it -- I was offering supporting thoughts in line with your light duty cycle thoughts regarding pressure. 

I apologize if the connotation of my wording was misread as insulting or not supportive.