If I Had To Do It Again, I Would Have Gone With The 375! - Sandblasting - Contractor Talk

If I Had To Do It Again, I Would Have Gone With The 375!

 
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Old 09-11-2010, 05:16 AM   #1
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If I Had To Do It Again, I Would Have Gone With The 375!


I know there was talk in an earlier post about hooking together two air compressors,
Well, I finally got the chance to hook my two old 185 Leroyís together.
Lately Iíve been using just one and itís a lot of wear and tear on it (the gray one), it runs at full scream just to keep up at 80 psi with#6.
(PS The old blue one runs like a new oneJ, but is camouflage in junk so no one conceders it to steal. LOL)

So here are the stats:
Just one, 5 hours run time; burns 1/2 tank fuel at full tilt, keeps 80 psi steady
Two, at 5 hours; ľ tank fuel each at a low idle, keeps 100 psi all day long.
Knocked off, I feel at least 2 hours on the job with heavy scale to take off.

Iím sold on the bigger air, itís easier on the compressor and keeps a nice steady air psi to the nozzle.
No psi drop after starting.
If I had to do it again, I would have gone with the 375!
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Old 09-11-2010, 10:02 PM   #2
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Iv'e been thinking about upgaraing as well Jim, if I can find a good deal. I'd like to get one with a built in after cooler. I think the Sulivans have that. Any one know which other brands have them built in? I saw a couple before on line with low hours that were about $28,000. I hope I can go a littler lower than that and not end up with expensive junk.

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Old 09-12-2010, 04:18 AM   #3
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


We started out with a 185 too, but quickly realized it was too small. If I were to do it all over again I would have bought our 375 compressor used. We have a Sullair 375cfm that's aftercooled, filtered , and has high/low pressure (110/150psi.)
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Old 09-12-2010, 06:21 AM   #4
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I never want to hook up to a 375 because I'm sure I'll want one. Just like any drug...If you never do it, you'll never know what the high is like. I don't want to be chasing a 375 compre$$or. But........the temptation is there. I'm sure those light weight medias would be much more productive. Just found this, looks like a pretty good deal.. http://cincinnati.craigslist.org/bfs/1924717112.html

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Old 09-12-2010, 01:47 PM   #5
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Atlas Copco builds a fine machine.
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Old 09-12-2010, 05:24 PM   #6
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Thanks Plasma.
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Old 09-13-2010, 07:51 AM   #7
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I don't know how familiar you guys are with air consumption charts

( I tried to post the link but I can't because I don't have enough posts, if your interested feel free to contact me)

You match your desired psi to your nozzle size and it will tell you your cfm requirements.

For bigger jobs where you need to run multiple pots its very helpful.
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Old 09-13-2010, 12:35 PM   #8
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Jim what size air lines do you use ? Do you run a bigger line after the two are tied together?
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Old 09-13-2010, 07:12 PM   #9
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Dyer you said it 2 machines idling using the same amount of fuel as one compressor screaming.I would just a soon make two trips to a jobsite and set up two units.A 375 costs 3 times that of a 185 and uses 3 x the fuel per day as I have told you men previously. In my opinion and from personal experience a 185 is fine and when needed use two.If you all spend your potential profit on more expensive fuel ineficent equipment you are taking "two steps backward for every step forward"
Now if any of you have full time steel work that pays it's a different story.
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Old 09-13-2010, 07:19 PM   #10
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


28k for a used 375? Why not buy a new open landscape trailer , two new sullair 185's a New pot, Air fed hood and a few tons of grit.Now your talking!!!!!!!

LoL but who asked me anyhow?
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Old 09-13-2010, 08:34 PM   #11
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I hear you Wes. I found a nice used Sullair aftercooled and filtered 4000 hours but still $15,000. I know I could work more quickly but that won't make more people call or make them pay more. It takes a long time to make up that cash.
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Old 09-15-2010, 02:15 AM   #12
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Blasting just about anything with less than 375 cfm is like scribbling on the surface with a fine point ink pen. Blasting sucks, it just happens to pay very well, make sure to get a compressor that gets the job done in a reasonable amount of time, so you can get the helmet off. I have 2 IR 375's that I rotate so I do not pile a bunch of hours on one unit. Honestly, 185 cfm units are OK for jack hammers but are really just a joke when it comes to sandblasting. I would even hate to strip a car with less than 375 cfm. I have a cfm / psi consumption chart on my web site, the link is below. No dis-respect for those of you using small air units, but time is money and I don't want to wip out my fine ink pen and start scribbling for hours and hours and hours when I could have gotten the job done in a fraction of the time by having the correct amount of air.
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Old 09-15-2010, 05:32 AM   #13
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Quote:
Originally Posted by blast4cash View Post
Jim what size air lines do you use ? Do you run a bigger line after the two are tied together?
this is the first time tried. Only hooked 1" line together and as short as I could. I had at the pot 100 psi steady with a #7 nozzle.

The right way to set up would be 2" or 1-1/2" from the compessor out then step it down to the nozzle.

We jump back and forth between the two compressors to keep down hours too.

I feel though, the compressors ran at a lower RPM and would create less wear and tear on them, lasting longer and lowering maintanace on them too.
two on a trailer would be sweet!

Just for notes:
I worked at a ship yard for 10 years, and they run 3, 1600 cfm electric compressors (or somthing like that), so 16 guys could blast at once in one building,
Ya I do know that more air psi makes for a quicker job!
But I'm not making Millions yet, so a low finance at the time is the only way I've got to be.
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Old 09-15-2010, 12:27 PM   #14
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Sorry if my shop is a joke to you Blastman put I havent gotten a check from you to upgrade my 185.
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Old 09-15-2010, 12:38 PM   #15
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I agree Blast4cash, scribbling? Kind of a slap in the face to all of those who pay there bills with a 185 and have been for years.
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Old 09-15-2010, 05:42 PM   #16
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I'd like to rent a larger unit to see the difference but the rentals don't have aftercoolers. Am I wasting my money or will it work well enough to try it out. I figure I can just buy an aftercooler and use it with a rental for larger jobs as they come up.
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Old 09-15-2010, 06:16 PM   #17
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


If you hook both lines at the pot when using two compressors there is no need for larger diameter lines.
As I said in earlier posts when I used a new rented 375 the fuel bill was 3x that of a 185.The fuel on a 185 is lunch money on a 375 its a Mercedes payment on a weekly basis.
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Old 09-15-2010, 06:20 PM   #18
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I do not believe that I mentioned anything about your shop. Nor did I mean to slap you in the face. We are really only talking about cfm here. It is truly nothing personal. I guess I should not throw out words like scribbling and joke, sorry your so sensitive.
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Old 09-15-2010, 06:22 PM   #19
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


Tell us Blastman,If you're such a player why are have you been trying to sell your business??The guys here are trying to make a living and it's hard enough without listening to BS.
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Old 09-15-2010, 07:14 PM   #20
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Re: If I Had To Do It Again, I Would Have Gone With The 375!


I have done this since 1995 and well I guess that I am simply tired of pulling the trigger for a living. I am not selling do to lack of contracts, but more because industrial blasting for 15 years straight with no employees has been hard on the body. I started this business when I was 30 years old. I refuse to hire any employees as I work on items that are completely unaffordable to replace if even slightly damaged. I have all the respect for guys trying to make a living doing this as it is one of the most physical nasty jobs in the trades. No dis-respect or BS ever intended on my part. So I hope that I have answered your question adequately Mr. wesschaff

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