I bought a 74 year old compressor today on Market place.

pinballlooking · 02-10-21, 09:00 PM

The tank ends are just under ¼” steel head .230 Shell .221 it was built 1947. The sides are almost that thick.

It has so much oil on it there is no rust on the tank.

It has a Quincy 325 pump. This pump has been made for years and more than two million sold. QR series was started 1937 and they still make the QR 325 today.
Rated 18.7cfm at 175 psi

It has a three phase motor. I may just get a single phase 5 HP motor.

I had to drive over two hours one way to get it.
It was outside Charlotte North Carolina.

I got if for $100

jeff5may · 02-10-21, 09:16 PM

Nice! You got a steal on that one.

pinballlooking · 02-10-21, 09:25 PM

Thanks, I was excited to get it. This one can be a real compressor backup to my compressor I use in the shop. It is supper close to the same output as my good compressor.

If I connect my 19 CFM and this one together sandblasting should be much better.

The guy bought it from bought the building it was in and it was no longer needed. He said it was still being used when they disconnected it.

pinballlooking · 02-11-21, 01:29 PM

Here it is after two car wash cycles. Their degreaser is usually decent but today is was not very good.

It is still cleaner than it was. I think I will just order a VFD and run this three-phase motor. I never tried that before but this is a very beefy motor.

The outside was supper dirty but the oil in it looks new.

Based on the (ROC number) record of change number 14 and talking to Quincy this pump was made about 1970 so the tank is older than the pump. The pump is about 51 years old.

The number after the model number is the record of change number.
That is the number to find the parts manual you need and also tells you about what year it was made.

pinballlooking · 02-12-21, 08:55 AM

I ordered a VFD to run the 3 phase motor. You can use the pressure switch to tell the VFD to start and stop.

The pressure switch only breaks a ground so I can use the cheap pressure switch I already bought. I will use the pressure gauge I already bought for this compressor.

I also ordered two new diaphragms for the unloaders. They wear out over time so they will need to be replaced.

I ordered a new gauge for the oil pump.

That is all I getting until I test it out.

pinballlooking · 02-12-21, 09:39 PM

One can of degreaser and I got the motor off. I was to cold for the pressure washer. Maybe next time is will not be so cold

Before after.

nibs · 02-26-21, 05:16 PM

IMO one of the best things about it is that if and when the bottom of the tank starts getting rust pinholes you have enough material that you can weld to.
When my cheapo modern ones rust through have never been able to get them welded effectively.
Good luck with it.
Latest projects, Mortising machine is almost finished and is working well.
Panel saw works like a hot damn,
Just got a treadmill and am turning it into a belt sander, will need 20" by 120" belts.

pinballlooking · 03-01-21, 05:38 PM

I really can’t wait to take off the head off the compressor and see what it needs.
But I want to run it before I do this. My motor bracket comes in on Wednesday.
I looked over the weekend and the old brackets were not even close enough to test it out.
I will have to line it all up to mount the new motor bracket.

I can turn it over by hand and feel it putting out good air flow.

If you need Quincy documents you can get them here.
Resource Library:
https://www.revbase.com/TagTeam/Clie...&siteid=841396

Most of the the links on the net are bad they moved where the store the old manuals links do not work anymore.

pinballlooking · 03-03-21, 10:10 PM

My motor mount came in. It fits the motor but the platform is not big enough. I will need to extend it to the pully side and back a little.
I think I will cut some ¼” plate to put under it.

Here is a good pully calculator.
https://www.blocklayer.com/pulley-belteng.aspx

My large pulley is 16” my small is 8” 5/16” motor is 1740 RPM that puts the pump right at 904 RPM.
I bought the single-phase motor with the same size shaft so I could use the original motor pully.

pinballlooking · 03-14-21, 03:29 PM

I is alive. This is just a test but it pumped 80 gallons 150psi in 5:02. Not bad.

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

When it is done filling the tank. The two unloader towers are leaking air until the tank is empty.
I ordered a valve repair kit.

02-10-21, 09:00 PM	#1
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	I bought a 74 year old compressor today on Market place. The tank ends are just under ¼” steel head .230 Shell .221 it was built 1947. The sides are almost that thick. It has so much oil on it there is no rust on the tank. It has a Quincy 325 pump. This pump has been made for years and more than two million sold. QR series was started 1937 and they still make the QR 325 today. Rated 18.7cfm at 175 psi It has a three phase motor. I may just get a single phase 5 HP motor. I had to drive over two hours one way to get it. It was outside Charlotte North Carolina. I got if for $100 Attached Thumbnails __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 02-26-21 at 08:19 AM..

02-10-21, 09:25 PM	#3
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	Thanks, I was excited to get it. This one can be a real compressor backup to my compressor I use in the shop. It is supper close to the same output as my good compressor. If I connect my 19 CFM and this one together sandblasting should be much better. The guy bought it from bought the building it was in and it was no longer needed. He said it was still being used when they disconnected it. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

02-11-21, 01:29 PM	#4
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	Here it is after two car wash cycles. Their degreaser is usually decent but today is was not very good. It is still cleaner than it was. I think I will just order a VFD and run this three-phase motor. I never tried that before but this is a very beefy motor. The outside was supper dirty but the oil in it looks new. Based on the (ROC number) record of change number 14 and talking to Quincy this pump was made about 1970 so the tank is older than the pump. The pump is about 51 years old. The number after the model number is the record of change number. That is the number to find the parts manual you need and also tells you about what year it was made. Attached Thumbnails __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 02-11-21 at 08:38 PM..

02-12-21, 08:55 AM	#5
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	I ordered a VFD to run the 3 phase motor. You can use the pressure switch to tell the VFD to start and stop. The pressure switch only breaks a ground so I can use the cheap pressure switch I already bought. I will use the pressure gauge I already bought for this compressor. I also ordered two new diaphragms for the unloaders. They wear out over time so they will need to be replaced. I ordered a new gauge for the oil pump. That is all I getting until I test it out. Attached Thumbnails __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 02-13-21 at 06:35 PM..

02-12-21, 09:39 PM	#6
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	One can of degreaser and I got the motor off. I was to cold for the pressure washer. Maybe next time is will not be so cold Before after. Attached Thumbnails __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

02-10-21, 09:16 PM	#2
jeff5may Supreme EcoRenovator Join Date: Jan 2010 Location: elizabethtown, ky, USA Posts: 2,431 Thanks: 431 Thanked 619 Times in 517 Posts	Nice! You got a steal on that one.

02-26-21, 05:16 PM	#7
nibs Apprentice EcoRenovator Join Date: Jun 2010 Posts: 206 Thanks: 1 Thanked 18 Times in 17 Posts	IMO one of the best things about it is that if and when the bottom of the tank starts getting rust pinholes you have enough material that you can weld to. When my cheapo modern ones rust through have never been able to get them welded effectively. Good luck with it. Latest projects, Mortising machine is almost finished and is working well. Panel saw works like a hot damn, Just got a treadmill and am turning it into a belt sander, will need 20" by 120" belts.

03-01-21, 05:38 PM	#8
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	I really can’t wait to take off the head off the compressor and see what it needs. But I want to run it before I do this. My motor bracket comes in on Wednesday. I looked over the weekend and the old brackets were not even close enough to test it out. I will have to line it all up to mount the new motor bracket. I can turn it over by hand and feel it putting out good air flow. If you need Quincy documents you can get them here. Resource Library: https://www.revbase.com/TagTeam/Clie...&siteid=841396 Most of the the links on the net are bad they moved where the store the old manuals links do not work anymore. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 03-02-21 at 12:50 PM..

03-03-21, 10:10 PM	#9
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	My motor mount came in. It fits the motor but the platform is not big enough. I will need to extend it to the pully side and back a little. I think I will cut some ¼” plate to put under it. Here is a good pully calculator. https://www.blocklayer.com/pulley-belteng.aspx My large pulley is 16” my small is 8” 5/16” motor is 1740 RPM that puts the pump right at 904 RPM. I bought the single-phase motor with the same size shaft so I could use the original motor pully. Attached Thumbnails __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 03-04-21 at 10:12 PM..