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So it look slike I have a Davey MC1a style compressor.
Does any one have any idea how slow I can turn this thing and then what hp electric motor I would need to do that? Also after derating it what psi would it pump to?
Russ
if you think a K-15 is a good reference point than just do a search here and on decostop, there's a couple of threads dealing with derating it.I have a davey here but I have never put an electrical motor on it, but just judging from the size I would say a 7.5 would be too small. Your unit is aprox. the same size as a K-15. A K-15 with a 10 hp motor running at 900 rpm is as slow as I would dare run it, so I would say you look for a used 10 hp single phase. (I have one sitting on my shop floor but it is spoken for, sorry). and run it with that. gauge your pullies to run it at around 900 rpm and check your amperage draw when you get it running. You will need a 60 amp dedicated cercuit to run a 10 hp.