Compressor and Spray Gun ?'s - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Garage - Tools
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-25-2009, 05:32 PM
ecs ecs is offline
Registered User
 
Last photo:
Join Date: Apr 2009
Location: Chicago, IL
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Compressor and Spray Gun ?'s

Hey guys, I've been lurking around on this site for a few weeks as a guest picking up as much information as I can before painting my car but I have a few questions I decided to bring up here so I finally registered.

First, I own a Chrysler Cirrus (not exactly a hot rod...) and my buddy was driving a while back when it got hit. I've recently decided to do all the body work and painting myself. I don't have anywhere to paint this except for my aunt's garage and I know she wouldn't like it if I tried to wire it for 220v so i'm stuck with 110/120v. I've emailed a guy on craigslist with a Craftsman compressor model number 919 176290. On it, it says: 8.8 scfm @ 40 psi, 7.0 scfm@90 psi, and 125 max psi. He also stated that this was a 110/120 volt unit. Do these CFM ratings sound realistic? I've NEVER been able to find a compressor under 220v that could put out that much air. I tried doing some research on google according to that model number but there is absolutely nothing. It's like as if that compressor doesn't even exist.



I know the tank is a bit small but I think with a filter on the wall and a filter at the gun, i'll be safe from moisture problems from the compressor running regularly off the 15 gallon tank.

Now, I know that I'd be hard pressed to run a "real" gun off of that compressor which is why i've done a little more research and i've come up with a few options. First I looked on ebay for that W400 copy that you guys were raving about. However I came up short, well... not entirely. I found the R400 which seems very similar to what you guys were playing around with.



It claims to only draw 3-4CFM at 30-50 psi, which even if it draws double that, I should still be safe with the compressor, assuming the ratings weren't inflated.

The second option (which i'll probably end up getting anyway) is the Eastwood Concours gun. This was the only "name brand" low CFM gun that I could find anywhere. I even got a chance to email Kevin Tetz of Paintucation.com and Trucks! on SpikeTV to talk to him about the Concours gun since there's his review of it right on the Eastwood website. He confirmed that it really does only draw 4cfm@29psi. Just to triple check, I was wondeirng if any of you guys had any experience with these guns?

Thanks in advance for responding!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-25-2009, 09:15 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,913
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
You are on the right track trying to locate a gun with minimal requirements and I think you are also on the right track by being suspicious of those CFM numbers! I have to admit I have no first hand knowledge of that particular compressor but 7 CFM@90 PSI just sounds totally unrealistic for a 110 volt unit.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-26-2009, 09:08 AM
ecs ecs is offline
Registered User
 
Last photo:
Join Date: Apr 2009
Location: Chicago, IL
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by oldred
You are on the right track trying to locate a gun with minimal requirements and I think you are also on the right track by being suspicious of those CFM numbers! I have to admit I have no first hand knowledge of that particular compressor but 7 CFM@90 PSI just sounds totally unrealistic for a 110 volt unit.
Thanks for the confirmations oldred. I knew I had to have learned something from the weeks of research

I'd ask the guy to look at the CFM ratings again, but I don't think the printing on it will actually change. They may just be inflated and that's that. I'll try bringing my gun with me when I go there, hook it up, and see if the pressure drops after a few minutes of wide open trigger pull. If that one doesn't work out, there's a 26 gallon Husky near me that supposedly puts out 6.5 CFM @ 40 PSI, 5.1 CFM @ 90 PSI. Although still high, that sounds much more realistic; not to forget to mention that the huge (well... it's big to me ) tank will definitely help out.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-26-2009, 10:07 AM
Registered User
 
Last photo:
Join Date: Mar 2009
Location: NC
Posts: 65
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
SCFM is not equal to CFM. be careful. compressor makers used to play games with numbers to make really bad compressors look really good.

http://en.wikipedia.org/wiki/SCFM

my 5hp, 2 cyl oiled compressor will move 18 CFM @ 90, if that gives you a reference.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-26-2009, 07:55 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,913
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
If you are limited to just 110 what's the chances of getting two compressors? If you can come up with two dedicated circuits and run both compressors together that would work.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-27-2009, 04:36 PM
ecs ecs is offline
Registered User
 
Last photo:
Join Date: Apr 2009
Location: Chicago, IL
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
There's only one pair of outlets in the garage and i'm pretty sure they're on the same circuit. Unless I run a wire from the kitchen to the garage... Um not such a good idea. I might have an angry aunt coming from the kitchen wielding a frying pan

Thanks for the word of advice jcoby, however i'm still confused by that article. Even if the tests were ran in a different temperature, with such a low CFM to begin with, would the ratings even be inflated that much? I can understand a compressor with say... 50 CFM varying by up to 5 CFM (10%) but a 8 CFM compressor varying 10% would only be .8 CFM. A little loss but not overly significant for the low demand guns i'll be using. Regardless i'll still be skeptical about those numbers, which is why i'll be bringing my gun with me to see if the compressor can keep up.
Reply With Quote Quick reply to this message

Recent Garage - Tools posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last 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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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



All times are GMT -6. The time now is 02:04 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.