Single Stage vs. Two Stage Air Compressors - FFCars.com : Factory Five Racing Discussion Forum
 
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post #1 of 5 (permalink) Old 03-12-2011, 12:44 AM Thread Starter
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Single Stage vs. Two Stage Air Compressors

Can any one school me on why an 80 gallon two-stage 5 HP compressor is better (and costs almost twice as much) than a 60 gallon single-stage 5 HP compressor if they both have similar CFM ratings. Other than the tank size being slightly larger on the two stage, what else is the real benefit of having a two-stage over a single-stage? Would the single-stage listed below be good enough to do the bodywork on an MK4?

I am considering doing my own bodywork and have been looking at these two compressors (waiting for a sale to pop up):

single-stage, 5 HP, 60 Gal, 18.5 CFM @ 100 PSI, $999, no magnetic starter required
http://www.princessauto.com/workshop...air-compressor

two stage, 5 HP, 80 Gal, 18.0/16.9 CFM @ 100/175 PSI, $1799 + Magnetic starter $
http://www.princessauto.com/workshop...age-compressor

Thanks in advance for any advice/suggestions.

FFR#7314 - MK4
8-71 Blown - 410W, TKO600, 3-Link, Konis, 3:27 rear, Stainless Sidepipes, Speedhut Gauges, Hoops & Overriders, 295's on 15's, PS, Hydroboost
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post #2 of 5 (permalink) Old 03-12-2011, 12:55 AM
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Two-stage air compressors provide a reliable air source in commercial, industrial and automotive applications. Multistage units tend to be more efficient, compressing air to a higher pressure than single-stage compressors. This allows more air to be stored for future use while generating less heat, reducing wear and extending compressor life.

In my mind the single stage unit listed first will be more than enough to supply all of your air use into the future.
Doug

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post #3 of 5 (permalink) Old 03-12-2011, 02:18 AM
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FWIW - I got a single stage, 240V Kobalt 60 gallon upright compressor from Lowes, probably cost me around $650 out the door with all the fittings, filters, regulators, etc. and it worked beautifully for doing my paint job. Unless you plan to do this full time I wouldn't bother with the more expensive units.

My compressor is overkill for anything else I need it for now, and have actually been using my smaller 25 gallon contractor 110V model for my wood working projects since it's portable.

Scott

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post #4 of 5 (permalink) Old 03-12-2011, 02:57 AM Thread Starter
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Thanks for the input! I'll probably end up going with a single-stage then....just gotta wait til they go on sale again...

FFR#7314 - MK4
8-71 Blown - 410W, TKO600, 3-Link, Konis, 3:27 rear, Stainless Sidepipes, Speedhut Gauges, Hoops & Overriders, 295's on 15's, PS, Hydroboost
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post #5 of 5 (permalink) Old 06-16-2011, 09:40 PM
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did you get one?

Lowe's is having a 20% off sale through 6/20

Shop Kobalt 3.7 HP 60-Gallon 155 PSI Electric Air Compressor at Lowes.com


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