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Author Topic:   air compressor

Posts: 60
From: Nashville, TN, USA
Registered: Nov 2000

posted 12-16-2000 07:10 PM     Click Here to See the Profile for nash   Click Here to Email nash     Edit/Delete Message   Reply w/Quote
Any advice on what to look for in air compressor for air tools and some painting. I will only be using for hobby purpose on my car on the weekend so it will be light duty. I have my eye on a 6hp w/25 gallon for $289. What are the adv/disadv of oil and oilless. appreciate any advice.

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Posts: 1289
From: Austin, TX
Registered: Dec 99

posted 12-16-2000 11:41 PM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
Oil-less compressors are exactly that, Oil-less. They run very hot and you don't want one, they are not for extended use.

One tip, get a bigger tank, the compressor will run less and last longer. Look for as many CFM at 90 psi as you can get, with a 6hp it should be at least 9 or 10 cfm. That sounds like a lot but isn't. A decent orbital sander will suck 4 cfm easy, and a cheap one will pull twice that. Which leads to tip two...

Second tip, buy quality air tools, with the lowest CFM requirment you can find. I was shopping with a buddy the other day, he just purchased a compressor. He was looking at air powered tools. He was comparing these two cut-off tools and was going to buy the $30 one over the $60 cause they looked just alike. Then I pointed out that the cheap one required 8 cfm while the $60 one only required 3 cfm. Thats a huge difference, his compressor would have run full time to power a 8 cfm tool.

Third tip, drain the tank often.
Fourth tip, drain the tank often.
Fifth tip, drain the tank often.

(Got that?)

Sixth tip, plumb in a good water seperator and external regulator, MANDATORY if you are going to paint.

Seventh and last tip, DO NOT get one of those big tool oilers that mount with your water trap. It will oil your entire hose down and you will have to keep a clean hose around to paint with. Make a tool oiler out of a short whip of hose and an inline oiler with a couple of quick disconnects. This way you can move it from tool to tool easily and only the little whip hose gets oil in it. Putting an swivel on it also helps out on wear and tear.

Best of luck. (Ok, one more tip) If you don't need a portable compressor consider a vertical model with a large tank, 60 gals or so. In reality very few people need portable models, air hose is very cheap, you could buy a couple hundred feet for less than $50.

Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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Gary DelVecchio

Posts: 167
From: Plano, TX, USA
Registered: Feb 2000

posted 12-17-2000 12:54 PM     Click Here to See the Profile for Gary DelVecchio   Click Here to Email Gary DelVecchio     Edit/Delete Message   Reply w/Quote

Exactly - What he said!!!!!I know you said "light duty" I've personally have gone thru this. As time goes on you'll find yourself doing more & more with the compressor. It won't be long before you'll wish you had more tank, more volume, etc. Do yourself a favor & do it right the first time.

1965 Convertible - 289 2V - For Pics see DI'S 65 this site !
MCA #48468 - Certified National Judge - 1964 1/2 - 1965
1987 Corvette
1998 DeVille

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Posts: 3592
From: So. Fl.
Registered: Aug 2000

posted 12-17-2000 03:04 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Opinion: I believe the cast iron compressors are a better. Certainly quieter. I have a eons old Campbell Hausfeld that has served me well.Have had to do one head gasket, Years ago, I made a water trap out of pvc, on the wall, and rigged a series of up and down routings allowing gravity to do it's thing. At each down part, put a petcock , Hooked up hose to this. For painting, use as short a hose as possible.Long hoses breed condensation! I then had a belt filter { on my belt, then a hose to the gun, with a disposal filter on the gun. Humidity is a major problem in So. Fl. Dont't use too many pneumatics, but prefer to oil the tool separate of any lines. Drain the compressor after each using.

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Rob Parsons

Posts: 174
From: Lebanon,TN
Registered: Jan 2000

posted 12-19-2000 04:02 PM     Click Here to See the Profile for Rob Parsons   Click Here to Email Rob Parsons     Edit/Delete Message   Reply w/Quote
I have a 60gal oil less upright. If I had it to do over I would not get it because of the noise. It is very very loud. Two or three times louder than the ones with oil.

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Posts: 35
From: Granada Hills, Ca., USA
Registered: Jan 2001

posted 01-22-2001 12:17 PM     Click Here to See the Profile for PJHMustang   Click Here to Email PJHMustang     Edit/Delete Message   Reply w/Quote
I would get the biggest I could afford with the upright tank. Oil type only. The oil-less are anoying as heck. If you get one that's too big, don't worry, you WILL grow into it.

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