This compressor is for home use so it should be single phase. Im debating between the 5hp and 7.5hp. Purchase cost and operating cost for output to find which is the better deal not saying the better deal is the way to go. I keep hearing everyone say the qr model but the qt is good also. I don't know what models are the right ones to look for at nothern tool or if I need to purchase elsewhere. To throw more in the mix im open to other brands and used. The only problem with used is having the knowledge to buy used(not dumb but I don't collect compressors). Good companies make more junk everyday so I don't even know whats good anymore. I pretty much want the best(within reason so the power station is out lol)home compressor and I have no major air requirements.
What quincy or compressor to get?
- Thread starter mow4cash
- Start date
stonesfan68
Well-known member
What is your budget?
The QT product line is a lighter-duty compressor suitable for commercial or home use. It would be more compressor then the average DIYer would use. The QR is for industrial use and would last a home-owner a lifetime.
The price difference between a 5HP and a 7.5HP in the same compressor series is usually only about $200. What you have to consider is the installation cost of the compressor. The 7.5HP requires a bigger breaker and other electrical components. Also, the electrical operating cost will be 50% more then the 5HP (not that you'll be running it that much).
I'd recommend going with the QT and using the money that you save to buy some good clean-up equipment (moisture separator and coalescing filter) and a pressure regulator.
The QT product line is a lighter-duty compressor suitable for commercial or home use. It would be more compressor then the average DIYer would use. The QR is for industrial use and would last a home-owner a lifetime.
The price difference between a 5HP and a 7.5HP in the same compressor series is usually only about $200. What you have to consider is the installation cost of the compressor. The 7.5HP requires a bigger breaker and other electrical components. Also, the electrical operating cost will be 50% more then the 5HP (not that you'll be running it that much).
I'd recommend going with the QT and using the money that you save to buy some good clean-up equipment (moisture separator and coalescing filter) and a pressure regulator.
mixxmstrmike
Well-known member
I was in your shoes two years ago and I went with the QT series 60 gallon compressor. One of the best purchases I ever made. For home use, it's "ALMOST" overkill. The only addition I made to it was an hour-meter and it's been running perfectly.
The money I saved went to other parts for the air lines (copper), regulator and filter.
Good luck,
Mike
The money I saved went to other parts for the air lines (copper), regulator and filter.
Good luck,
Mike
Busted_Knuckles
Well-known member
Ive got QR 350, which is overkill, for any personal garage, my nighbor and one of my friends have QTs. One QT runs a shop that is 80x380, they work on ag equipment. It keeps up. QT is more than sufficient, the QR you put in your will.
The QR dates back to about 1940, with little in the way of changes, its big, heavy and quiet.
I have a problem with over kill, its in my DNA. It took me about a year to find a nice used QR. I bought it running, as in, I got to go see/watch/here it run prior to purchase. Found it on craigslist, and I drove about 100 miles one way to get it.
"The proven performance of the Quincy QR-25
is best examined through decades of delivering
compressed air on-demand. There are over two
million Quincy QR-25 compressors currently in
use, some originally installed over 40 years ago.
Decades of reliable operation ensures complete
satisfaction and builds confidence day after day,
year after year."
http://www.aceair.com/PDF/QRSERIES.pdf
The QR dates back to about 1940, with little in the way of changes, its big, heavy and quiet.
I have a problem with over kill, its in my DNA. It took me about a year to find a nice used QR. I bought it running, as in, I got to go see/watch/here it run prior to purchase. Found it on craigslist, and I drove about 100 miles one way to get it.
"The proven performance of the Quincy QR-25
is best examined through decades of delivering
compressed air on-demand. There are over two
million Quincy QR-25 compressors currently in
use, some originally installed over 40 years ago.
Decades of reliable operation ensures complete
satisfaction and builds confidence day after day,
year after year."
http://www.aceair.com/PDF/QRSERIES.pdf
Attachments
Whats the price difference between the QR a QT? I have an added overkill chromosome too which has cost me alot of money. Seems like its worth the extra for the 7.5 since I will have to do electrical anyway. Does the cfm on the 7.5 give me any tool advantages over the 5? Is the 7.5 an in between that is not really worth it? I heard a 7.5 is pushing the single phase limit? Budget is pretty large within reason when it comes to value. Any places on the web to buy the qr or qt series?
Busted_Knuckles
Well-known member
The QR in my pic, I bought used, he gave me the original bill of sale, Id have to go find it, but it was new in 1987, it came with an after cooler and refrigerator, total was $6800.00 ? and some change, if I recall. But I have no idea what they sell for today, Id guess they are several grand.
The unit I bought, the air went through the 110v after-cooler, and fridge, before the air was sent to the tank, so Im assuming Ive got a "better than average" used tank (as far as rust goes). He also ran it on synthetic from day one, he gave me 3 oil filters and a gallon of synthetic.
I paid $1750.00 for it, and all three items "work". Ive seen allot of them used for $850-$1500 (325s & 350s, they are common), but most have been repainted (thats a turn off for me, I want to know what it really looked like), and I could not hear them run. I bought a 325 on ebay about 10 years ago for $67 (ping-n-poke), and ended up leaving that at my buddies shop. It was a little rough, and was an early model, but it pumped air, none the less, just didnt look that good, and I had to do some work to the unloaders, and replace some lines, including the intercooler (some clown smacked it with a forklift while "handling it").
Ive never seen the QR series for sale anywhere, except used. You might try "google" to see who is the distributor for your area for Quincy.
One other thing to note about the QR, there is actually an aftermarket of hard parts for these pumps, they are that popular. The QT, I dont know about.
Open that PDF if you want to see all the different "units" that are in the QR family, it tells how many HP to how many CFM, as well it shows a nice "cut though" diagram.
One thing I think that is really cool, is a pressure lube system with spin on filter.
The unit I bought, the air went through the 110v after-cooler, and fridge, before the air was sent to the tank, so Im assuming Ive got a "better than average" used tank (as far as rust goes). He also ran it on synthetic from day one, he gave me 3 oil filters and a gallon of synthetic.
I paid $1750.00 for it, and all three items "work". Ive seen allot of them used for $850-$1500 (325s & 350s, they are common), but most have been repainted (thats a turn off for me, I want to know what it really looked like), and I could not hear them run. I bought a 325 on ebay about 10 years ago for $67 (ping-n-poke), and ended up leaving that at my buddies shop. It was a little rough, and was an early model, but it pumped air, none the less, just didnt look that good, and I had to do some work to the unloaders, and replace some lines, including the intercooler (some clown smacked it with a forklift while "handling it").
Ive never seen the QR series for sale anywhere, except used. You might try "google" to see who is the distributor for your area for Quincy.
One other thing to note about the QR, there is actually an aftermarket of hard parts for these pumps, they are that popular. The QT, I dont know about.
Open that PDF if you want to see all the different "units" that are in the QR family, it tells how many HP to how many CFM, as well it shows a nice "cut though" diagram.
One thing I think that is really cool, is a pressure lube system with spin on filter.
Attachments
Busted_Knuckles
Well-known member
Yes, 7.5hp is fine for single, they do sell 10hp single phase motors, amp draw is high. The table in the pdf, shows the relationships. The unit I bought, will run 5hp to 15hp and CFM ranges from 15-36 cfm.
Yes, the HP is proportional to the CFM..pretty directly. So 7.5 is more than 5hp, and 10 is more than 7.5hp.
GeorgiaHybrid
Well-known member
I will second the QR series and although I got a bargain in my 5 HP 325, I don't expect to ever have to buy another one. They make almost 20 SCFM at 175 psi and will run anything you will need in a home shop and then some. The QR series has a pressurized oiling system (like your car engine) instead of a splash lube and some of them will have a spin on oil filter as well.
If anything ever does go wrong with one, they are fairly easy to rebuild, there are a ton of parts out there for them and once rebuilt, your grandchildren will be running it long after you are gone.
If anything ever does go wrong with one, they are fairly easy to rebuild, there are a ton of parts out there for them and once rebuilt, your grandchildren will be running it long after you are gone.
Junkman
Well-known member
I have a 5 HP QR-25 series pump with the 80 gallon tank. Paid $1750 for it about 20 years ago, and it is still going strong.
Busted_Knuckles
Well-known member
On the tag, on the pump, will be the number 325-***. The *** is the revision, if you have the number, you can tell what vintage it is. Fill time is based on the tank size, and the motor. Hard to tell without that info.
If its old, you taking some risk with the tank. Id want to know the vintage before I buy, and like I said in my earlier post, if its painted, I wont even go look at it. I want to know what it really looks like, not interested in a "krylon" rebuild
Busted_Knuckles
Well-known member
No, I think 40 or 41 was the first year. The suffix is called the "ROC" or record of change, most of the time its two digits, it might be newer, Ive never seen more than "2" digits after the model number. Call Quincy, the corporate number, and they can give you info on it.
olytdi
Well-known member
I picked-up a QR (325) 6 months ago for a couple hundred bucks and am still going through it. Runs great but is leaking a little oil at the gasket between the upper and lower block. What a beast!! Once it's in order though, it will be a workhorse for years. I think mine's a 1997 or so. Was sitting outside for a while but was under a tarp. Minor surface rust but everything works as it should.
You can get all of the parts and service literature online form Quincy which I did and put in a binder as a shop manual. I intend to put mine up on a cat walk to save floor space.
Unless time is an issue, I would definitely look for a good used unit, rebuild if necessary and save a bundle. But then I could never justify buying one new.
You can get all of the parts and service literature online form Quincy which I did and put in a binder as a shop manual. I intend to put mine up on a cat walk to save floor space.
Unless time is an issue, I would definitely look for a good used unit, rebuild if necessary and save a bundle. But then I could never justify buying one new.