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Old 06-18-2015, 07:44 AM   #1
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Air compressors, what do you have

air compressor on a boat seems to be something we would need for all manor of things. Curious as to what y'all are running? 12V or 110, size is important (as in small), and a fairly decent PSI/CFM rating is a plus.
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Old 06-18-2015, 08:02 AM   #2
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110 volt, 1.5 hp, ~3cfm @ ~90psi. Oil less and no tank. Mostly used with the hookah.
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Old 06-18-2015, 08:14 AM   #3
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My sporty has a compact twin 12 VDC compressor mounted to a dual tank unit. It was a cheapy chinese 120 v air compressor in a previous life. I removed the 120v motor/compressor and replaced it with a pair of 12v permanent magnet oilless compressors, the type used for air bag systems on "low riders" to get enough volume. I used the pressure switch that came with the unit originally and wired it into a 60 amp relay box that has a pair of relays to run the compressors. Each compressor has its own breaker. Its all mounted in the engine room. It has enough air volume to run a hooka rig for hull cleaning/maintenance, air tools, etc. The only air using device on the boat is the horn. A lesser reason for 2 compressors was redundancy. If one goes out I still have compressed air.
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Old 06-18-2015, 08:23 AM   #4
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Greetings,
Mr. rw. I just bought a small compressor to keep aboard-go figure...
Husky 3 gal. Portable Electric Oil-Lubricant Air Compressor with Combo Kit-BS1003 - The Home Depot

During our recent re-paint I had the use of a much larger machine and I brought a number of my air tools (scraper, die grinder, cut-off wheel, spray gun, spot sand blaster etc.) on board to be used during the re-refurbishments. Left the compressor behind when we moved marinas but procrastinated about taking the air tools home. Soooo....bring the tools home or buy a compressor? Hahahahaha! Stupid question right?
The above unit will not allow prolonged/continuous usage of a die grinder, for example because of the small storage tank and the larger air consumption of the grinder, but it will provide sufficient air for short usages. One has to wait for the tank to refill between "bursts" but with patience, it does the job.
I've actually found a spot in the ER for semi-permanent placement. For total boat coverage I just have to run a longer air hose to the work site.
Comparatively speaking, air tools are cheaper than electrical and much more efficient, in most cases, than manual tools.
Being an oil unit it CANNOT be used for Hookah diving. My Hookah unit is a self contained, stand alone device.
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Old 06-18-2015, 09:14 AM   #5
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Quote:
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air compressor on a boat seems to be something we would need for all manor of things. Curious as to what y'all are running? 12V or 110, size is important (as in small), and a fairly decent PSI/CFM rating is a plus.
I use these a lot. They are dental compressors. Very, very quiet.
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Old 06-18-2015, 09:38 AM   #6
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Cheap Home Depot style pancake compressor in engine room, 110V. Plumbed to air chuck on back deck and to air horn. Very handy pumping up dink, bike tires and hyd steering. Those coiled yellow hoses can stretch far enough to reach from back deck to dink.
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Old 06-18-2015, 11:14 AM   #7
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Have a 110-volt compressor (with tank) for powering the horns.


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Old 06-18-2015, 01:33 PM   #8
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Just put a small Senco 110 volt for 100 bucks . Like the nail gun Senco . Small tank . I put it in mainly for the air horn . I only get 1 decent blast with it before it kicks on again but it works and very handy to have air on board .
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Old 06-18-2015, 03:15 PM   #9
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I use a small compressor for the horns only. I doubt it could provide much air for anything else. I also carry a small 12V portable air pump for filling inflatables.

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Old 06-18-2015, 04:02 PM   #10
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Scuba tank with 1st stage regulator set @ 120 psi. Maybe when I start cruising I'll buy a compressor. It offers low maintenance and a quality of product no <250 psi compressor can come close to.

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Old 06-18-2015, 09:36 PM   #11
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120 volt, 20 gallon, 150 psi. Probably a bit to large, but it's nice to have a few air tools.

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Old 06-19-2015, 05:29 AM   #12
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Thanks all, think I'm going to order a senco, as a former carpenter I've used their products for years.
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Old 06-19-2015, 07:56 AM   #13
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120 volt, 20 gallon, 150 psi. Probably a bit to large, but it's nice to have a few air tools.

Conall
Yes, on the air tools. That's the one thing I miss since my compressor does not have a tank. I can spray paint but my air tools are useless.
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Old 06-19-2015, 08:57 AM   #14
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Yes, on the air tools. That's the one thing I miss since my compressor does not have a tank. I can spray paint but my air tools are useless.
Any room for a 5-10 gallon portable tank that you can plumb in-line?

That is my plan...more volume, the tank is portable and silent for small jobs like airbrushing, filling inflatables, etc....
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Old 06-19-2015, 09:22 AM   #15
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Any room for a 5-10 gallon portable tank that you can plumb in-line?

That is my plan...more volume, the tank is portable and silent for small jobs like airbrushing, filling inflatables, etc....
Something I have been thinking about but...
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Old 06-20-2015, 06:15 AM   #16
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filling inflatables, etc....

Most boats have a shop vac on board , and it will inflate or deflate a condom boat very rapidly.
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Old 06-20-2015, 10:03 AM   #17
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My shopvac won't quite get the dink fully inflated. Gets it full but still squishy. The compressor is slower, but there is a trick: Aim the blow nozzle about an inch from the fill port. The venturi effect entrains air near the small jet and multiplies the flow rate. When near full this effect falls apart. Then stuff a rag around blow nozzle to keep air going in the right direction. Thanks Mr Bernoulli.
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Old 06-20-2015, 11:30 AM   #18
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My shopvac won't quite get the dink fully inflated. Gets it full but still squishy. The compressor is slower, but there is a trick: Aim the blow nozzle about an inch from the fill port. The venturi effect entrains air near the small jet and multiplies the flow rate. When near full this effect falls apart. Then stuff a rag around blow nozzle to keep air going in the right direction. Thanks Mr Bernoulli.
We use this same trick!
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Old 06-20-2015, 11:41 AM   #19
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Maybe this is a good place to ask - do any TFers use air-starters on their main engines?
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Old 06-20-2015, 11:53 AM   #20
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Maybe this is a good place to ask - do any TFers use air-starters on their main engines?
Not popular until you get to a very big engine. The problem with air start is you can only crank briefly before air tank is empty. On one boat with a 14 liter engine and an air tank about 40? gal, it could only crank about 10 seconds. Injection was airbound and I was trying to reprime it. Took forever.

Batteries hold MUCH more energy.
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