Thread: air compressor

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i have found a good deal on a 6.9 cfm 50 gallon compressor. will this paint my car.

If you are using HVLP, that'll be fine. The 50 gallon tank will hold enough air that it won't be running constantly. Use the 3/8" hose as Denny said. What are you considering to be a good deal?? Donny

175 for compressor and hoses and ratchet tools and spray gun. A friend has it and does not have any room and is lookinhg to get rid of it.

I once painted a 63 Buick wildcat with a 5hp, 26 gallon tank...it ran non-stop and I had to stop and let it catch up after each panel... That SUCKED!! I now have a 7hp, 80 gallon, works great, but really hope to upgrade to a 2 stage this summer. Sounds like a pretty good deal. Good luck!

thanks maxx and denny. I think that i will take him up on it. if nothing else Charlie and I can learn to airbrush with it. and it gives me a excuse to buy new tools to play with

Originally Posted by jyardgirl

thanks maxx and denny. I think that i will take him up on it. if nothing else Charlie and I can learn to airbrush with it. and it gives me a excuse to buy new tools to play with

That is a good deal IMO. No question that a big compressor is one of the nicest tools to have in a garage, but that doesn't mean you can't do just fine with a smaller one. For years I only had a 20 gallon 1.5 HP Sears rollaround compressor, and I painted lots of stuff with it........cars and boats. I even Imroned my 27 foot cruiser with it. Yes, it did run pretty much constantly, but it did the job.

Stuff like sandblasting was the problem........I would have to stop and wait for it to catch up most of the time. We next moved up to two 60 gallon 6 HP ones, and they lasted us for a few years til we wore them out. My present one is one 60 gallon tank with a three cylinder compressor and huge 5 hp motor.......it does just fine.

But right in the middle of painting my Kids T the motor crapped out, so we went to Harbor Freight and bought one of their $ 149 on sale compressors, and it got us through the job, and we used it for the next month until the new motor came in and was installed on our big unit.

Bottom line, you will have lots of jobs you will be able to do sucessfully with the one you are talking about.

Don

Tank size is only a reserve! The tank helps buffer the tool usage vs the pump output. Ideally the pump should be able to supply enough air to run the tool all be its self. Many manufactures rate their compressors by Hp and by amps or by cfm. Cfm is also misleading as this is just bore by stroke displacement. It doesn't take into account the efficiency of the unit or more accurately the inefficiency of the unit. Years ago I was taught to rate by the CFFM the free (available at the pump head) volume of air. Sadly no two manufacturers will standardize the rating systems.

The compressor you have described should cover most of your needs.

I have a 5.5cfm@90psi 26-gallon tank compressor and mistakenly bought an impact wrench that requires 6.2cfm@90psi. Oops. All of my other air tools are within the working range for this compressor, but I think that I can reasonably use the impact wrench in short bursts without any problem. It seems to me that starting with a full tank, the tool will bleed off air at a such a rate that before the compressor kicks on, I'll have finished what I'm doing. With the tool running continuously, a compressor that exceeds the tool requirements will replenish the tank pressure (however slowly), and then stop until the pressure drops and the compressor is needed again. However, one that is below the tool requirement will continue to run until the tank pressure falls below 90psi and then fail to supply the tool with sufficient air.

Does this make sense? If not, why not?

yes it does dorsey. thanks