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  #1  
Old 10-27-2008, 05:55 AM
8viatorPete 8viatorPete is offline
 
Join Date: Feb 2008
Location: Toronto
Posts: 8
Default Compressor choice - calling all gurus!

Alright - I've got a fantastic set of tools from Cleaveland, my shop is ship-shape, and my 8 tail kit is on the bench ready to assemble. So - I need a new compressor, and I have narrowed it down to two choices. I want some experienced builders to weigh in here and give me advice. Background as follows: I live downtown, so noise is a big deal. My shop is set up for RV building and woodworking.

1 - Ingersoll-Rand SS5L5 - single stage, 60 gal, 18.1 cfm @90 psi / 135 psi max / 230 volts, 19 amp starting draw

2 - Ingersoll Rand 2340L5 - two-stage, 60 gal, 14 cfm @175 psi / 175 psi max / 230 volts, 28-amp starting draw (with single-phase hook-up)

The single stage would probably be plenty of compressor, but a lot of guys have opined that two-stage is quieter, and runs less. I've used plenty of compressors in the past, but never really paid attention to the specs. I know that a lot of the ones I've seen in other guys shops are too noisy (the oilless ones are out for my location!) So what do you guys think? I'm using a borrowed portable compressor right now, and need to get my real one bought and hooked up.
Thanks in advance for your help guys! The RV community is amazing.
Pete
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  #2  
Old 10-27-2008, 06:11 AM
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DaX DaX is offline
 
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Location: newnan.ga
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What CFM is the 2340L5 rated for at 90 psi? This is the number that really matters.

I have the SS5L3 and have no gripes about it. It is the same as the L5, but only with a 3HP motor instead of the 5HP. With the 5HP you get nearly 8 more CFM, but my personal opinion is that you won't need it for any tools needed to build your airplane. I have never wished I had more CFM, but I am only running one line off the compressor and don't have a blast cabinet or anything. Of course, if you choose to go with the L5, that would be fine too. You can never have too much HP.
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  #3  
Old 10-27-2008, 07:07 AM
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captainron captainron is offline
 
Join Date: Jun 2006
Location: Cincinnati, OH
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Default

An accumulator (extra air tank) plumbed onto your system will keep a smaller compressor from running as often. It's not often you need a really big compressor. Mine's a Craftsman Professional 25 gal., oil lubricated. Runs on either 110v or 220v.

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  #4  
Old 10-27-2008, 07:13 AM
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Mel Mel is offline
 
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Pete,
Either compressor will work fine, BUT....once you have had a 2-stage, you can never go back. It is so much quieter and will last so much longer.
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  #5  
Old 10-27-2008, 10:47 AM
RyanM RyanM is offline
 
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Just a quick glance is that the 2-stage is about 250 bucks more. Considering that you'll be using this for other stuff in your shop, and are looking for a long term investment it's probably worth it getting the 2-stage.

I bought a 60 gal oiled single stage, and while its better way better than my oil-less, Its still pretty loud. But it only was 550 bucks. Chances are, if/when we move, and I build a shop- I'll sell it, and buy a two stage compressor.
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  #6  
Old 10-27-2008, 11:38 AM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
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Question What lifetime are folks....

Quote:
Originally Posted by Mel View Post
Pete,
Either compressor will work fine, BUT....once you have had a 2-stage, you can never go back. It is so much quieter and will last so much longer.
...getting from their compressors?

My cheapo 3HP Campbell-Hausfield(sp?) single stage belt driven compressor is still going after many various projects and about 20 years...

I'm waiting for it to die so I can get a vertical one for my workshop, but it's like the Engergizer bunny...

...or perhaps I'm just seeing the quality of older stuff before it was maid in China??
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  #7  
Old 10-27-2008, 11:42 AM
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DaX DaX is offline
 
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Quote:
Originally Posted by RyanM View Post
Just a quick glance is that the 2-stage is about 250 bucks more. Considering that you'll be using this for other stuff in your shop, and are looking for a long term investment it's probably worth it getting the 2-stage.

I bought a 60 gal oiled single stage, and while its better way better than my oil-less, Its still pretty loud. But it only was 550 bucks. Chances are, if/when we move, and I build a shop- I'll sell it, and buy a two stage compressor.
I decided to save money on the compressor and use that extra towards a refrigerant dryer, hopefully this summer.
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  #8  
Old 10-27-2008, 12:23 PM
Tomasz Tomasz is offline
 
Join Date: Dec 2007
Location: North Liberty, IA
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Quote:
Originally Posted by DaX View Post
What CFM is the 2340L5 rated for at 90 psi? This is the number that really matters.
There are also other questions like - what is the pressure switch range for the smaller one? Having 135 psi max suggests that the switch will kick out around 125-130 psi. The question is when it does kick in? I bought mine at Harbor Freight: http://www.harborfreight.com/cpi/cta...emnumber=92504 two years ago (it was $299 then). It worked perfect for me for last two years, it's quite quiet and thanks to being twin cylinder (do not confuse it with two stage, it's single stage, double the CFM) it gives me plenty of air for any tool I wanted to use so far. The only problem I encountered is that the pressure switch kicked in around 95 psi. Which normally would be plenty enough but in those rare cases when you truly need that 14CFM@90 even when it kicks in around 95 the pressure can actually drop below 90 in the tank. I searched around and found pressure switch that kicks in around 105psi and since then I had absolutely no problem.
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  #9  
Old 10-27-2008, 08:32 PM
8viatorPete 8viatorPete is offline
 
Join Date: Feb 2008
Location: Toronto
Posts: 8
Default thank you guys.....

Great info, guys. For the price difference (about $300 here in Toronto) I think I will get the two-stage after reading your replies. I think the two-stage will cycle a lot less, and that will be important here in downtown, where you live cheek-by-jowl with your neighbours.
I also plan on getting the Ingersoll Rand particulate filter and moisture separator (not the big refrigerator/dryer.) I think it will be a great rig (and I just know that I'm going to end up running a new power line to the garage to give it the juice it will need.) Oh well, in for a penny......... Just met with the contractor who's putting in my Schwank radiant heater, the latest in a long list of expenses. And I've never been happier!
Thanks again guys.
Pete
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  #10  
Old 10-27-2008, 09:35 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
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Pete,
Most of the noise from a compressor comes from the inlet port. Granger sells a filter muffler that will reduce the inlet noise by about 80%

Look here and find one that will fit your unit......

http://www.grainger.com/Grainger/wwg...erg&L1=Solberg

On a two stage unit, the air gets compressed twice, first in the big cyl, then by the small cyl. It will make more noise as the air is pushed into the tank past the check valve. But it's not that bad. Just don't place it under your neighbors bedroom window!
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