Got Air?

Air compressor that is...Just got a 21 gallon compressor and it just doesn't seem to cut it, (literally). Curious to hear what you're all using and what capacity

 

7 hp 80 gallon twin cylinder

 

I have 6 hoses that attach to one pressure manifold, and then to the rest of the system. I have my students take turns blowing into the hoses to supply all the hot air that I'll ever need

-Bugman Jeff

 

I have 4-[seriously] five horsepower-80 gal tank compressors- that way one always works![thats about the size you need]

 

Ha, good one bugman. How's the 80 gallon perform? My 21 gallon it slow and putters out. What's the ideal and/or minimum for compressors. The type of work I'll mostly be doing is grinding, cutting, sanding, minor body work...

 

hey!speaking of air compressors,a buddy of mine just bought a building turn key,and has an extra compressor for sale.its a 3 phase with a100?+ gallon tank.he wants 450-500 bucks or something like that for it.anyone interested,i can get more accurate info.......quickrod...oh yea mines an 80 gallon single phase,have'nt had any problem's at all with it keepin up with the air equipment i use.... love it!

 

The CFM rating on the pump is at least as important as the size of the tank.

 

Ok, so what about CFM, how much?

 

check out www.paintucation.com for lots of aircompresor info. for painting, etc.

 

5 horse 60 gallon but i wish it was a bit bigger. it can slow down if i am using a tool that takes alot of air like the grinders, sanders and cut off wheel. i've noticed when it is real cold (like now) the tool will freeze up. literaly. i have to hold them in front of the heater to thaw them out. i oil the piss out of them too.

next time i'm going for a 2 stage compressor with a little more air capacity and a little more horse power.

 

7 hp 80 gal with a 60 gal inline.
13.7 cfm @ 175 psi max.

 

I could have told you that tough guy.. But I am not going to bag on a x-mas gift. But yeah I learned that doing my car fool, 80 gallon for sure. They are just pricey for me right now. I'll call you later..

 

7 horse 2 stage 80 gallon.

Does all I ever need it to do. If you run 2 die grinders at one time, it does run longer though.

 

For the record, my school compressor is 120 gallon, 15 HP, and with 4 air grinders or DA's, it's always recharged faster than we could empty it.

-Bugman Jeff

 

There is a difference between CFM and Free air, if a compressor is advertised at Say 10cfm the free air delivery will be lower maybe only 7cfm,if you want to spray you will need at least 12cfmfree air,so the pump will have to give more than that poss 15or16cfm. Recently people have been advertising compressors by the motor rating, ie 4hp 7hp etc,I believe that the higher the HP rating the bigger the pump but it is CFM that you need to look at. If you look at your air tools they should have the air requirements on them,or on the box they came in,check them out and find the one with the biggest requirement,probably the spray gun or the DA sander,then make sure that the compressor will give you at least 25% more air than that tool needs,or the thing will never be off. If you can try and find a seperate extra tank so when you are spraying you have the extra capacity as you don't want to be losing pressure mid way through painting a large panel.
Hope this helps.
John.