Shop Compressor? Any thoughts? - Page 2 - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

Reply
 
LinkBack Thread Tools Display Modes
post #11 of (permalink) Old 12-24-2002, 10:00 PM
 
Join Date: Jun 2001
Posts: 523
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Shop Compressor? Any thoughts?

I agree with Sarge. I bought a 7 HP, 60 gal. upright. Runs my impact without breaking a sweat! a DA sander will put it through it's paces though. those things suck ALOT of air! pick out the biggest thing you can afford then borrow some money from a buddy and buy the next model up! you wont regret it!. Wade
wades_76_CJ7 is offline  
Sponsored Links
Advertisement
 
post #12 of (permalink) Old 12-24-2002, 10:13 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Shop Compressor? Any thoughts?

See I was going to invest in OBA instead of Shop Compressor... what would ya'll do... I just dont think a York could hold up with continous duty... plus my car would have to run all the freakin time... I want enough power to paint a whole car, grind the fawk out of anything and do whatever and not OVER HEAT... So a 5-7hp 60+ gallon tank is going to be the best bet?
post #13 of (permalink) Old 12-24-2002, 10:30 PM
 
Join Date: Oct 2002
Posts: 128
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Shop Compressor? Any thoughts?

i run air tools on a 5hp an a 30 gallion tank an have no problem an i use it a lot,i live on a farm so i use it as much as enybody exceped maybe a body man i want a bigger one but it works, an i can move it around.
as for the york i just put one on my jeep. an it is impressive for what it is, but you do have to have the jeep runing all the time.
go at least 5hp an 20 gallon.

duke
duke401 is offline  
Sponsored Links
Advertisement
 
post #14 of (permalink) Old 12-26-2002, 09:31 AM
Moderator
 
Jim_Lou's Avatar
 
Join Date: Dec 2001
Location: Belleville, Illinois
Posts: 11,502
Thanks: 15
Thanked 22 Times in 17 Posts
         
Re: Shop Compressor? Any thoughts?

And above all, remember that two-cylinder is not necessarily two-stage. Single-stage compressors, regardless of the number of cylinders, start to run out of breath around 100 PSI. Most tools call for 90 to 100 PSI, which takes 125 to 150 in the tank. A single-stage compressor will work mighty hard doing that.

And what's the deal with two-cylinder, single-stage compressors anyway? Once you have two cylinders, why not make it two-stage? I've never understood that.
Jim_Lou is offline  
post #15 of (permalink) Old 12-26-2002, 10:58 PM
Keyboard Implanted
 
Join Date: Nov 2001
Location: North Central Illinois
Posts: 3,928
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Shop Compressor? Any thoughts?

Twin cylinder single stage units just provide more cfm and a little faster recovery rates . That's about it , they still suck .....
Sarge
Sarge is offline  
post #16 of (permalink) Old 12-27-2002, 12:27 AM
 
Join Date: Aug 2000
Posts: 4,282
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Shop Compressor? Any thoughts?

what's the differance between single and 2 stage compressors? I've heard to get a dual stage but don't have a clue what the differance is.

BarrelRoll
Jeeper99xj is offline  
post #17 of (permalink) Old 12-27-2002, 07:09 AM
Moderator
 
Jim_Lou's Avatar
 
Join Date: Dec 2001
Location: Belleville, Illinois
Posts: 11,502
Thanks: 15
Thanked 22 Times in 17 Posts
         
Re: Shop Compressor? Any thoughts?

In a two-stage compressor there is a big piston that pumps air into a small, second-stage cylinder, which pumps it into the tank. There are mechanical limitations, I don't know what exactly, that cause a single stage compressor to become very inefficient at higher pressures. Usually they have their pressure switch set at 125 PSI.

Two-stage shop compressors typically are set at 175 PSI, and run well at those pressures. High-pressure pumps, like scuba compressors, have 5 to seven stages, and pump to 3,500 PSI or more.

And as I said earlier, there are two-cylinder, single stage compressors. There are big ones with 5 HP motors and 50 gallon tanks that look pretty impressive, but the fine print will say 125PSI. That may sound OK to run a tool that calls for 90 PSI, but with pressure drop in the dryer, oiler, fittings and hose, you need almost 125 in the tank to have a full 90 at the tool. And once you start using the tool, the tank pressure will drop, and it takse a single-stage pump a long time to get it back to 125.

A two-stage compressor set will cost quite a bit more than a single stage, twin cylinder unit of similar size. I suspect that the reason is that a two-stage unit is likely to live in a commercial setting and run more than it's shut off, so they have to be built better.

I bought a used Ingersoll Rand for about as much as a similar size single stage at Sam's, and am glad I did.
Jim_Lou is offline  
post #18 of (permalink) Old 12-27-2002, 09:26 AM
Keyboard Implanted
 
pontiac58's Avatar
 
Join Date: Jul 2000
Location: southern new jersey
Posts: 2,818
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Shop Compressor? Any thoughts?

Get the biggest, meanest, one you can find. Look for a old used one out of a old gas station they are tearing down. I have a compressor made in 1945. It sits on a 55 gallon tank with a huge compressor on it. That i keep for a spare. The one that is running my shop right now, has a 60 gallon tank with a V style compressor. My spare i paid 50 bucks for. I was driving past a old gas station getting torn down and saw the compresser sitting in a room with one wall all ready missing. I stop in asked the guy in the dozer how much. He said 50 bucks and you have 30 mins to get it out while they were at lunch. They nice part was they left there sawzal pluged in for me and while i was cutting my buddy was coming with his wrecker to pick it up and take it home. The only thing you have to watch with the big industrial compressor is the motors. Make sure they are 220. Alot of them of 3phase. I have 3phase in my shop so that doesnt matter for me.
pontiac58 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome