Time to upgrade the air compressor... Questions?

[Rodsmachineshop]

I would were that out in a day at my shop lol http://stlouis.craigslist.org/tls/3038386148.html this is a heavy duty compressor here another http://stlouis.craigslist.org/tls/3101465106.html

[CGCINC]

I would were that out in a day at my shop lol http://stlouis.craigslist.org/tls/3038386148.html this is a heavy duty compressor

That does look like a nice one.

[Rodsmachineshop]

dont know if a single or 3 phase dont say in add , napa are usa made and made by http://www.saylor-beall.com/home.php or http://www.quincycompressor.com/cont...rocatingpiston like your best compressor made

[Rambozo]

Attachment 7228lay a cement slab like i did outside with a over head roof for rain better out side cooler for air compressor and most big compressors are noisy . tell you a funny story when i had my shop in palm springs my big compressor was in the customers bath room . made a lot of women scream when it fired off running in the bath room lol here a pic of the beast out back lol

I like the tie down straps with umbrella.

At a couple of shops, I've put the pump and the motor up on the roof, and just the tank inside. Makes it pretty quiet, and it's still easy to drain the tank and get to most of the plumbing. Nice and quiet, all you hear is the tapping of the check valve, if that's mounted on the tank.

[Rodsmachineshop]

nice huh darn wood roof with shingles blew away a month ago when we had a bad storm , have to get my but out the and build another lol cant believe the beast is over 28 years old and still a pumping , had to put a new electric motor on it this year

[Rambozo]

dont know if a single or 3 phase dont say in add , napa are usa made and made by http://www.saylor-beall.com/home.php or http://www.quincycompressor.com/cont...rocatingpiston like your best compressor made

I would agree Quincy are some of the best piston pumps made. But if you want the Rolls Royce, you have to go to a rotary screw compressor. I've never seen one below 10HP but I should look around.

[CGCINC]

Can you wire up a 3 phase if you have single phase or does that play with the type of service coming into the building?

[Rodsmachineshop]

no you have single phase would have to call most likly the compressor on craigslist is single since dont find 3 phase very often

[Rodsmachineshop]

i worked at a big tire shop that had one there really quiet rotary screw compressor are so cool

[Brian Ski]

Compressor on Craigslist.... Only bad is a 10gallon tank.

http://stlouis.craigslist.org/tls/3101319405.html

That is strange... Bought new only used a couple times... But it has no belt guard, no cover for the switch box, and the wire for the motor has no connector. I think for the money you can get a nice upright.

[Rodsmachineshop]

Rated at 25 CFM at 100 psi. no way that small pump would make that a 25 cfm pump is huge

[Rambozo]

Can you wire up a 3 phase if you have single phase or does that play with the type of service coming into the building?

You can use a phase converter, or a VFD. But it would be best to change the motor for a compressor.

[Rambozo]

That is strange... Bought new only used a couple times... But it has no belt guard, no cover for the switch box, and the wire for the motor has no connector. I think for the money you can get a nice upright.

Very strange. It's obvious that it came with the 3ph motor and someone swapped the 1ph. The pulley sizes mean that thing is really running maxed out. Never a good thing for compressor life. Much better to have a big pump running slow than a small pump running fast.

[jakeru]

IME, you don't need a very big compressor for die grinding.

I've got a pretty modest sized compressor... a harbor freight 115V special. The die grinder is the main thing I use it for. I have modified it's cooling system for 100% duty cycle. (made improved shroud, and an "always on" auxiliary electric cooling fan.) I do like how it doesn't take up much space. (Vertical tank style) and is portable (on wheels, can be moved if needed.)

That said, it does run a lot better since removing the restrictive air pressure regulator off of it. (I'm talking about the pneumatic one that is in-line with the air fitting, not the one that controls the compressor motor from cyling on/off.) I also find that I often don't need to run my die grinder "flat out" to make it work efficiently.

Since doing that, my main remaining compaint about it is how loud it is. I always use ear plugs when near it while it's running. I use it primarily for carbide burring, but also for cartridge rolls, and other small surface prep tools with the die grinder (roloc stuff on die grinder... 2" diameter discs works OK, 3" is a little underpowered in the torque department). I've got straight, and right angle die grinders for it. I also use it for blowing things clean (or to cool hot things down), and airing up tires. Doesn't drive the impact wrench very well, or drive an air-powered cutoff tool very well.

[CGCINC]

That is strange... Bought new only used a couple times... But it has no belt guard, no cover for the switch box, and the wire for the motor has no connector. I think for the money you can get a nice upright.

Yeah, you never know what your getting out there.

I'm going to save and do it right.
I looked up my little compressor and this is the CFM rating:
SCFM Delivery At 40 psi: 6.3 SCFM
SCFM Delivery At 90 psi: 5.1 SCFM

That is enough for my Plasma cutter so I'll deal with it for awhile till I can get a huge compressor and plumb the shop.

[Brian Ski]

Here you go... 28 cfm and on sale too.... What a nice compressor... 220 single phase.

http://www.aircompressorsdirect.com/...sor/p2394.html

[CGCINC]

Here you go... 28 cfm and on sale too.... What a nice compressor... 220 single phase.

http://www.aircompressorsdirect.com/...sor/p2394.html

Ok, maybe I should add that I'm not roling in money!! lol

[undercut]

Here you go... 28 cfm and on sale too.... What a nice compressor... 220 single phase.

http://www.aircompressorsdirect.com/...sor/p2394.html

Wow, look at that thing. It's 80 gallon yet the compressor portion is STILL almost as large. Golly! AND with a built in Refrigerated Dryer?

[geezer]

Ok, maybe I should add that I'm not roling in money!! lol

SOooo you miss a few mortgage / car payments and the wife and kids live on wieners and beans for a few years,,,they will understand,,,right,,,,it's for a good cause,,,man toys,,,LOL

[Brian Ski]

BTW you did say sand blasting... These are cheaper Harbor Freight jobs...

This is a cabinet style...
http://www.harborfreight.com/40-lb-c...net-93608.html
Requires a 5 HP compressor with minimum 12 CFM at 40-80 PSI

And here is a portable...
http://www.harborfreight.com/40-lb-p...ter-68992.html
Air consumption: 6-25 CFM

I use one like this...
http://www.harborfreight.com/portabl...kit-37025.html
Minimum air requirement: 3.5 CFM @ 50 PSI

Mine uses a lot of air... I run mine at a full pressure... It works great, until the pressure drops (few minutes) and then efficiency drops and use more air. Just giving you an idea of what air a sand blaster uses... Probably the highest air using tool. Btw at the moment I have a medium compressor.