Tools, Sharpening and Power Machinery - Air tools and compressors

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DavePearson
09-03-09, 05:48 PM
I was not lucky enough to have a 220V outlet in our garage, so I am trying to trade my decent compressor for a 120 v compressor that will be almost as functional.

The old had a rating of 9.9 at 90 psi. It worked great with my impact driver and would cycle infrequently while using it (33 gal tank).

I am being offered a trade, a 120 v system, 33 gallon tank, but only rated at 4.2 @90. My question is, is that rating that of the compressor or the rated output of the system (meaning will the output of the tank be whatever I need, but if it cycles, the compressor may not be able to keep up, so I would have to stop to let the tank fill).

I hope the question makes sense.

Thanks


GregH
09-03-09, 06:06 PM
Yes, makes perfect sense.

Based on what you have said I would suggest you make an effort to rewire your garage before giving up your 9cfm compressor!
If you can't do this right now then how about buying an inexpensive import until you can do so.

If you are use to the relatively high air delivery of your current unit you will not be happy with what is being offered.
You would be getting the very short end of the stick.
If you absolutely need to get rid of your compressor you would do better by selling it and buying new.
A 120 volt 15 amp cct should be capable of 6 cfm@90 psi so you would be 2 cfm short of what you could use if you did the trade.

Here (http://forum.doityourself.com/tools-sharpening-power-machinery/131654-air-compressor-information.html) is a link with some compressor info and a picture of a decent compressor that should work on a 15 amp cct.

What make and model is your unit and the one you are considering trading for.

DavePearson
09-03-09, 06:17 PM
Mine is a 6.5 HP (nameplate, but know it is not really) Craftsman professional, about 11 years old.

The other is a Craftsman 1.6 HP (which is what scared me), with the same capacity tank. I know the motor could not keep up with continuous use.

Thanks,

Dave


marksr
09-04-09, 04:30 AM
I agree, add a 220 circuit to your garage. Depending on where your breaker box is - it might not be that expensive.

I have a 6 hp, 60 gallon and a 1 hp, 11 gallon. There is really no comparison. I bought the small compressor first and while it would do most of what I threw at it, it would struggle and run non stop when using high cfm tools like sanders and paint guns..... I only keep it because it's portable:D

mikeTN
09-08-09, 07:35 PM
I was not lucky enough to have a 220V outlet in our garage, so I am trying to trade my decent compressor for a 120 v compressor that will be almost as functional.

The old had a rating of 9.9 at 90 psi. It worked great with my impact driver and would cycle infrequently while using it (33 gal tank).

I am being offered a trade, a 120 v system, 33 gallon tank, but only rated at 4.2 @90. My question is, is that rating that of the compressor or the rated output of the system (meaning will the output of the tank be whatever I need, but if it cycles, the compressor may not be able to keep up, so I would have to stop to let the tank fill).

I hope the question makes sense.

Thanks

you won't be happy with the swap. as stated, adding a 220v. plug would be worth the expense and probably won't be that much. you can NEVER have too much air!!!