i dont know much about Air Compressor. any advice what to look for or what to use??
what is different between oil lubricated oil free.
also i heard you have to drain water?? air?? from the tank after using??? tell me more about this.

 

there are a few good threads if you search, there was one pretty recently.
Basics are oil last longer and are quiter.
Yes you want to drain the water and air out of the tank when your not using it, otherwise it will build up rust (not good for somthign with 125+psi haha)

I guess the best question is, what is it for and how much you willing to spend


edit: Here is a few of the threads, you should learn everything you need to know.

https://honda-tech.com/zerothread?id=1195406
https://honda-tech.com/zerothread?id=1351838
https://honda-tech.com/zerothread?id=1332509

 

well, i got a coleman 25 gal oil free and its loud...but it got a big motor and charge up fast....i believe its 155 max psi...but it gets the job done...my next one would be a oil lub...

 

Biggest question is what is your price range. This will dictate everything when it comes to buying one of these. In the sub 200 range, oil free units are almost more reliable than the oil lubed ones.

Gimmie your price range and I will give you links to 20 compressors of various sizes

 

my price range is about 250-300 enough power to work on engine.

 

Yeah search! It's all been covered. Summed up, go by how much air it delivers, not psi, the volume it puts out, and don't go by horsepower ratings which are complete BS. Also, do not get the oil-free ones, you'll go deaf and wish you never bought it.

 

going deaf and wish you never bought is a major exageration. Both of the oil free compressors i have arn't to bad, but they are louder then the two stage oil lube my boss uses on the job site.

What do you mean by enough power to work on engine?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accord387 &raquo;</TD></TR><TR><TD CLASS="quote">going deaf and wish you never bought is a major exageration. </TD></TR></TABLE>

Guess I didn't go to enough rock concerts... My neighbor across the street has one of those oil-free units and it's a PITA to listen to. They have to yell to be heard over the thing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kb58 &raquo;</TD></TR><TR><TD CLASS="quote">

Guess I didn't go to enough rock concerts... My neighbor across the street has one of those oil-free units and it's a PITA to listen to. They have to yell to be heard over the thing.</TD></TR></TABLE>
I would tend to agree my old oil-free was LOUD!!! I would have to stop working and go inside when the motor cycled on.

 

i dunno, both the oil-free i have are loud... i dunno i've never been to a rock concert but i guess i just don't think its very loud since im used to hearing catless exausts on hondas haha.

 

I bought my Craftsman compressor a while ago. It's quieter than any other compressor that I've heard. 175 Psi max, 140 Psi cut in, 25 gallon. Oh, and it's oil free.

http://www.sears.com/sr/javasr...e=Yes

 

bump to bookmark

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accord387 &raquo;</TD></TR><TR><TD CLASS="quote">going deaf and wish you never bought is a major exageration. Both of the oil free compressors i have arn't to bad, but they are louder then the two stage oil lube my boss uses on the job site.

What do you mean by enough power to work on engine? </TD></TR></TABLE>

i replaced the cylinder, rings, piston, and reed in my oil free one 3 times. It died twice while I was pulling apart my engine. Just got a craftsman oil lubricated one which I like Much, Much more.

 

The big thing to look at is the cfms on the compressor. If you do alot of high cfm work such as painting, using an air impact, air sander look at the cfm requirement on the tool and base your purchase on that. As for oil free or not, it really doesnt make a big difference, but the oiled machines are for heavy use. If you are just an occasional user just get an oilfree unit. They really arent that bad.

 

I read through almost all the posts now and just curious before I buy this unit. I found a used compressor for a decent price and wanted to get your guys opinion since this model seems to be mainly sold to 'painters' but I plan on using it for air impact:

DeVilbiss Pro 4000
20 Gal
3.5hp
Displacement = 11.9 CFM
8.5 CFM @ 40psi
6.8 CFM @ 90psi
Max Pressure = 125psi
Max RPM = 3450rpm

Buying this for $150. What do you guys think?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Riceburner247 &raquo;</TD></TR><TR><TD CLASS="quote">I bought my Craftsman compressor a while ago. It's quieter than any other compressor that I've heard. 175 Psi max, 140 Psi cut in, 25 gallon. Oh, and it's oil free.

http://www.sears.com/sr/javasr...e=Yes</TD></TR></TABLE>

I've heard that one, notice its a two stage compressor.
My dad runs an older oil free single stage, and it is REALLY loud. Part of the problem is where you put the compressor. If its in a box or a room with finished walls its not as bad as in a concrete walled basement or some structure that would just amplify the sound.
Good luck shopping.

Anyone have advice on what to look for buying second hand for the guy?
Maybe he could get a good deal on a compressor from someone who's upgrading...

 

I have a Coleman 25gallon oil-free compressor. It had a one year warranty and right after the warranty ended, the motor over heated. I called and talked to their CSR and i couldnt show proof of when i bought it cause i didnt have the receipt. Well they were very nice and sent me a brand new motor for FREE. Oiless compressors will be good for ocassional use but if you plan on using it a few times a week, get a oil lubed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2000Accord5sp &raquo;</TD></TR><TR><TD CLASS="quote">I read through almost all the posts now and just curious before I buy this unit. I found a used compressor for a decent price and wanted to get your guys opinion since this model seems to be mainly sold to 'painters' but I plan on using it for air impact:

DeVilbiss Pro 4000
20 Gal
3.5hp
Displacement = 11.9 CFM
8.5 CFM @ 40psi
6.8 CFM @ 90psi
Max Pressure = 125psi
Max RPM = 3450rpm

Buying this for $150. What do you guys think?</TD></TR></TABLE>

Not bad, but it ain't great either. The cfm at 90 psi could be better. Air tools are generally rated for use at 90psi. Some small tools don't require 6.8 cfm during use...but any kind of descent impact gun will far exceed 6.8 cfm at 90psi.

The other issue is the tank size...for small tools that use little cfm that compressor is fine...anything that uses a moderate amount of air though and your compressor will be running non stop. The more it runs, the more heat and moisture you end up with in the tank.

So basically, for 150 bucks it ain't bad....the tank is a tad small and the cfm's aren't great, but it'd work with some quality tools connected.

There is a big misconception with people thinking tank/pump peak psi is what your after, and that isn't the case. The ideal situation is a high cfm at 90psi. Quality air guns will give you 1000 or more ft/lbs in reverse at only 90 psi, but they'll use 15+cfm to do it. With a low cfm pump and a small tank, that gun will work but only in short bursts before the pump kicks on. With a pump that can only generate 6.8cfm...you'll have to sit and wait for the pump to refill the tank before you go at it again.

So when buying a compressor, you only need to be sure that you can get 115-120 psi and your good to go. Match that with a tank that has some capacity and a pump that generates some descent cfm to keep up and your good to go. I can't see any moderate automotive work being done with anything less than a 30 gallon. CFM's at 90 need to at least be 6.5 or more, and you need descent tools attached. Any less and it'll get annoying with the motor running alot and air not working for you very well.

 

save a bit more money and get something with a big tank. It sucks when you are using heavy tools or painting and the compressor cant keep up. If you have a big tank it really helps.

I have a couple campbell Hausfield compressors and they ahve held up great so far. The little one I got when I was 16, 2 stage with a 20 something gal tank.... just couldnt keep up. Now I have a Lowes brand (campbell hauslfield...same as home depot) compressor. 60gal tank with a big 2 stage compressor. I think its 13cfm @ 90psi. Anyways, take the floor model (10% off) then use a tax id number (8.25% off) then bitch about missing paperwork or small parts (10% off)... I got mine for $400 and the pricetag was about $515