air tools
#142009
10/26/08 10:24 PM
10/26/08 10:24 PM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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i am finally at the paint and body on my 68'coronet restoration, i bought a air inline sander, orbital sander, high speed sander, my question is i have a very old sears air compressor, about 30years old, i have gotten by till now with it, it is a 1hp, 12 gallon tank, 7.1 cfm at 40psi, 100 psi max, my problem is i went to harbour freight and bought all these air tools, when i try them on my compressor they just don't seem to work right, the inline sander will come on but as soon as you put pressure on it it stalls, is this my compressor, or is it the cheap air tools? if it is my compressor, what size do i need? budject priced
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Re: air tools
[Re: cornet684me]
#142010
10/26/08 10:46 PM
10/26/08 10:46 PM
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Joined: Aug 2008
Posts: 1,568 Omaha, Nebraska
Scott Carl
pro stock
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pro stock
Joined: Aug 2008
Posts: 1,568
Omaha, Nebraska
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You need a bigger air compressor. No lees than 30 Gallon. 60 is better. At least 8 - 10 CFM. I got my 60 galllon @ Home Depot for $400. It is advertised as 10.2 cfm @ 90 psi., 3.2 hp motor driving a single stage v-twin cast iron pump. It a Hausfeld Cambell and many will say to stay away from them but it serves me well.
Last edited by Scott Carl; 10/26/08 11:02 PM.
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Re: air tools
[Re: dOc …]
#142013
10/26/08 11:31 PM
10/26/08 11:31 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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A 1hp compressor is pretty small. You have to rate cfm at the pressure you are using the tools at. X cfm at 40 has to be drerated at 90-120 PSI, so with wear and old age, you probably have about a 2cfm
Also make sure your hoses are large enough, and that the supply fittings aren't corroded/rusted/ plugged inside. 1/4 hose is too small for most anything, anymore.
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Re: air tools
[Re: cornet684me]
#142015
10/26/08 11:37 PM
10/26/08 11:37 PM
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Joined: Aug 2008
Posts: 1,568 Omaha, Nebraska
Scott Carl
pro stock
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pro stock
Joined: Aug 2008
Posts: 1,568
Omaha, Nebraska
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Quote:
does it plug to a 110 outlet or 220 outlet?
Sorry. I left that out. 220v. You wouldn't want anything over 1hp at 110v. It would cost too much to run I would think
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Re: air tools
[Re: cornet684me]
#142016
10/26/08 11:37 PM
10/26/08 11:37 PM
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Joined: Jun 2004
Posts: 893 Tustin, CA
pishta
super stock
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super stock
Joined: Jun 2004
Posts: 893
Tustin, CA
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Those tools need some CFM's and that ol craftsman is more suited for inflating tires and maybe an air hammer, but nothing continuous. check the CFM requirement on the sander, 5@90 is not going to happen on that 1 horse. You need at least a 2 horse.
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Re: air tools
[Re: pishta]
#142017
10/26/08 11:49 PM
10/26/08 11:49 PM
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Joined: Dec 2007
Posts: 1,639 Brandon, Ms
cornet684me
OP
top fuel
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OP
top fuel
Joined: Dec 2007
Posts: 1,639
Brandon, Ms
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your not going to believe this, but i just went out and check the rating on posted on the front of the tank, it says 7.3 cfm at 40psi, 6.0cfm at 90psi, but it is 30years old, i do not think it is pushing this cfms, did they rate compressors different back then?
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Re: air tools
[Re: dOc …]
#142020
10/26/08 11:59 PM
10/26/08 11:59 PM
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Joined: Jul 2008
Posts: 30,491 Florida STAYcation
dOc …
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,491
Florida STAYcation
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Quote:
Consider adding a large tank to your unit. UNLESS you are going to use those tools many hours a day ... that should work for you.
TRY the above ......
I needed HUGE air requirements ...... 125 psi at 20 cfm ... but only for short periods of time.
I used a top-of-the-line 5hp 2 stage compressor with almost 200 gallons of air storage. It worked great for me for 20 years.
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Re: air tools
[Re: cornet684me]
#142022
10/27/08 12:02 AM
10/27/08 12:02 AM
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Joined: Aug 2008
Posts: 1,568 Omaha, Nebraska
Scott Carl
pro stock
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pro stock
Joined: Aug 2008
Posts: 1,568
Omaha, Nebraska
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Quote:
how do i add a tank to mine? i will try anything at this point, i do not have the 800.00 or 900.00 for a new compressor
I got my 60 gallon @ Home Depot for $400.
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Re: air tools
[Re: cornet684me]
#142026
10/27/08 01:51 AM
10/27/08 01:51 AM
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Joined: Jun 2004
Posts: 3,319 Chicago Burbs
sthemi
master
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master
Joined: Jun 2004
Posts: 3,319
Chicago Burbs
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For a long time my compressor was a 2 hp 110 v. Sears. it worked OK but had a lot of down time waiting for the tank to fill. The extra tank is a great way to cheat. Just plumb the outlet of our existing unit into the other tank and put an outlet in that line. There are new ones, but a good source is someone with a dead compressor head giving away the tank, Keep you eye on craiglist or local ads.
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Re: air tools
[Re: sthemi]
#142027
10/27/08 02:22 AM
10/27/08 02:22 AM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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I also got my 60 gal unit on sale from home depot. 220v is the way to go if you can swing it, you just can't get much more than around 5-6cfm @ 90psi out of a 110v unit(this sounds like about what yours was, back in it's day). Just can't make enough horsepower on a practical 110v unit to spin a large enough compressor. The entry level 220v 60 gallon units put out about twice that cfm, but have the tank capacity to run a larger tool for a long time. A small tank one like yours will run out of breath a lot sooner, but regardless, if you've got the proper line size, the tool should work fine at first, just after an amount of use, tank pressure will drop because the compressor can't keep up. I don't think you're going to be runing a DA sander with what you've got, even if you add in an extra tank. The smaller compressors work decently for intermittant use like an air nailer, and light air ratchet/impact wrench use, but not so good for constant output devices like angle grinders, paint guns, DA sanders, etc. Even with the add-on tank, use will be intermittant as you'll have to stop and wait for the tank to fill a bit so you can gain power back. The extra tank capacity gives you a longer usage time, but also a longer refill time.
I was in the same boat as you, did not want to spend all my dough on a new compressor, so I kept using my tired, leaking 13gal 110v unit until I finally just could not take it anymore. If you use tools made for your compressor's size, they work fine, but when you want to do more than your compressor can handle, it get irritating, very quickly. Lol, just try taking off a cylinder head with your impact and a smal compressor. Last time I got 6 bolts off before I just ran out of power and had to just put the gun down and let the 110v unit refill. No more of that for me.
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