Santa says I've been good

pete,  when i sandblasted the rims and centers on my 190 I ran 2 compressors in tandem.   my home compressor (cheapo cummins tool deal) and our gas powered portable unit.   i plummed them together into our 30 gallon air bomb and ran 1/2 inch hose to the sandblaster. in total was about 120 gal total capacity.    it was a 100lb pressurized unit.  i could blast for a good while but i was glad to take a break and let the compressors catch up.  i did not use any check valves, used 3-  1/4 connections and a 1/2 made into a cross so that the 2 compressor inlets fed the portable air bomb and 1/2 hose as the same time.

Edited by CAL(KS) - 30 Nov 2016 at 12:25pm

Thanks for all the replies!  One question for you guys that run multiple compressors piped together.  Do you have a check valve in there to keep the air moving in one direction?

Leon, why would a low speed motor be more efficient ?  MOST of the compressors run about 1000 RMP, but they are run by either 1800 or 3400 RMP motors. I don't see what difference it makes on the MOTOR as long as the COMPRESSOR does not run over 1200 RPM ... and hopefully less than that.

Those smaller compressors will run all the time while a bigger compressor just idles along. Less expensive to run in the long run.

I have the 80gal from Lowes. Love it!

I like the multiple compressor idea. I have a couple if decent 110 compressors and a 5hp gas wheel barrow compressor here I should look into hooking then all together when I want to sand blast.
I can tell you the small wheel barrow or roofing compressors are priceless if you have equipment and alot of land. Thought people where crazy when they told me I would love that thing but I find I take it to my equipment broken down in a field more often then anything else.

A friend of mine found a used military compressor that is gas powered for his sand blaster. Makes since if you don't want to blast much because you really don't want to pay the inrush current for that high CFM compressor everytime you want air for a tire or tool. Most of the time a high volume tank and lower CFM pump like you see at the box stores will be all you need.

check your amps draw on the motor before you buy, be sure you have the power available at your home or shop to pull the startup load before you spend good money!

This is more of the "generic" compressor I was talking about. Has about 2/3 the volume you need to do sand blasting. Its a good unit for general garage use. Puts out about 10 CFM at 90 psi...... farm stores, lowes, menards, everyone sells "similar" for $450- 500. Just a little small for blasting or running grinders.  I have painted with them. -

Yea, tank size is not the biggest problem, CAPACITY is the important part. Most of the "base line" compressors in the $400-500 range have  volumes of about 7-9 CFM.  You can blast away for 3-4 minutes until the pressure drops and the pump starts up again. If will not maintain pressure putting out 7-9 CFM....... I have a 60 gallon tank with a 15 CFM compressor. It will just about maintain constant pressure when blasting. I might stop every 10 minutes for 1 minute to let it catch up... MAX PRESSURE is not that importante either... VOLUME/ CFM  is what you need.  The 7-9 CFM will work OK for painting as you don't paint a 100 psi, more like 40 psi.

been good????? ROTFLMAO !!!!