Compressor req

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  #1  
Old 11-26-08, 12:20 PM
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Question Compressor req

Hello all,

Im from UK and have been working with cars all my life. But i need some advise on a compressor requirement.

I mostly do bodywork (as well as alot of other stuff) and iv got a 1953 Mk5 Bentley to paint next week.

To cut to the point without to much confusion. We are needing a compressor that will cope with at min 35-40CFM to keep up with the tools i will be using. The tools will require 5.5bar(80psi) max.

We are looking at using a rental item. A compressor that they use on the side of the road to break up road surfaces etc.. I know there is alot of different specs of theses compressors. I expect them to be either a screw type compressor that would run all the time and provide alot of CFM and lower pressures. But im used to a piston type compressor with 37cfm at 160psi on a 360lt receive. The concern i have is if theses compressors are suited to this sort of application.

Any advise or input would be a great help

Many thanks
Paul
 
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  #2  
Old 11-26-08, 05:35 PM
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compressor

I worked at a place where we had to do a lot of sanblasting. We used a compressor like you are talking about hooked up with our regular comp. and it worked OK.If you are using any air fed hoods be careful because the comp can pick up exhaust fumes and pump it into the hood. RW
 
  #3  
Old 11-26-08, 05:49 PM
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You're gonna need at LEAST a 50gal tank to paint a car and a 10 CFM @ 90PSI.
 
  #4  
Old 11-26-08, 07:19 PM
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35-40 cfm is enough to run a large amount of air tools, just how large of a shop are you talking about? you can paint with a much smaller compressor. large gas/diesel compressors will run the volume and pressure you are looking for but you run the risk of having exhaust or oil mist contaminate the air supply to your paint.

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  #5  
Old 11-27-08, 02:23 AM
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You raised a few concerns i never really thought about there, esp the airfed masks.

I am planning to visit a place today to see about a compressor and will be asking a few questions regarding its setup. So ill report back tonight

One question. If its providing all that CFM (100odd) and im only needing half of it. will it still need a tank?? Im certain i dont need one as all i know tanks are used for is storage of the air so its ready. as most of them are piston type and running a piston all the time will mean one hot compressor and alot of moisture if the weather is right.

Cheers for the replies
Paul
 
  #6  
Old 11-27-08, 12:11 PM
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Well spoke to a few people today regarding the compressor i was talking about. And was advised against them due to them running on oil fuel.

Which makes sense! doh! So have arranged a Rand screw compressor that does the job

Thanks for you advise
Paul
 
  #7  
Old 11-27-08, 12:32 PM
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rand screw compressor should do the job nicely, are you also running a lot of air for breathing? if so you need to check into a carbon monoxide detector for the breating air/or a scrubber for the breathing air. I would also have some type of oil filter to make sure that oil is not in the breathing air.

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  #8  
Old 11-27-08, 06:38 PM
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I will be using a airfed mask yeah, safest way imo. There is a built in filters on the mask belt as current. Also they will be providing a oil/water trap for the compressor and all fittings upto the main airline to the gun/mask

We are expecting the setup to arrive monday morning, so i may post some pics up off the setup if there is any interest?

There isnt alot of need for mass amounts of breathing air as this is only on rent for one job really

Cheers
Paul
 
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