Compressor Question

RIDGERUNNER

Hey, I got another question. I was told I needed at least a 185 cfm compressor. I found a '94 Leroi 185 cfm compressor. Its got the 4cyl. perkins desiel in it. The hour meter shows about 875 hours (don't think the are correct though). Its an old sunbelt rentals compressor. The guy said it needed the air-separater filter. He said it cost about $200 bucks. Same guy has got a Ingersoll-Rand 250 cfm with a 6cyl air cooled duetz desiel. Anybody know anything about either of these. I know the I-R brand is known for air compressors i just don't know about that air-cooled motor.

plazaman

I would prefer the 250 CFM, but not sure about the air cooled. But then again, they manufactured the unit, they knew what they were doing when they produced it, so why should i worry about overheating.

What is your budget for a compressor?

Check this site out: http://www.machinerytrader.com/

Click air compressors and type in your zip, it will show you your local listings.

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MEDIA MAN

RIDGERUNNER,
When determining what size compressor to run, first determine the size nozzle you want. If you plan on doing blasting of all sorts, many media's you will want to consider using at least a 5/16 nozzle.

The following is guide provided by Clemco. Besides the nozzle cfm They recommend leaving 50% for reserve. Air fed helmets and filters use another 20 cfm.
-1/4(#4)nozzle requires 81 cfm. The air fed helmet is another 20cfm. 50 cfm reserve. Total cfm 151
-5/16(#5) nozzle requires 137cfm. The air fed helmet is another 20cfm. In addition, reserve is 79 cfm. Thats 236cfm.
-3/8(#6) nozzle will require 196cfm. The air fed helmet is another 20cfm and a 50% reserve is another 108cfm. Total cfm is 324.
-7/16(#7) requires 254 cfm. The air fed helmet is another 20cfm. 137 reserve. Total cfm 411.
-1/2 (#8) requires 338 cfm. The air fed helmet is another 20cfm. 179 reserve. Total cfm 537.

I am running a 210cfm with a #5 nozzle. At 210 I don't have the 50% reserve, but it is doing alright. In addition , for a little over a year I have not used an air fed helmet, only a full face respirator with dual filters. I am looking at purchasing one soon because the soda really can burn your skin especially when sweaty.
If I am having problems one day for whatever reason then I don't have my reserve cfm to help compensate. The reserve is there for whatever else you may want to run off the compressor or simply as back up cfm for holes in the pnuematic lines or leaky fittings. Some nozzles will require more cfm, like a "super stick"(smallest available size is a #6 nozzle) and some of the double venturi's I believe. Also you may want to use larger than a 5/16(#5) because you want more production. Jumping to larger size nozzles will require more cfm. Any other additions such as media driers will require additional cfm. All pnuematic deadman assemblies require cfm. The alternative is an electric deadman, which is what I run.

I recommend going larger than 185. Even though it is sufficient and many blasters use 185. I like to go larger, but with not a lot of overkill. I would also suggest using 4 ply media hose with poly couplings and nozzle holders. The hose is heavy duty and will sustain a lot of abuse. The poly couplings and nozzle holder will not conduct electricity as the media traveling through the hose will build up static electricity.

What air cooled motor are you referring too? The diesel motor? You mean there is no liquid to aid in cooling the diesel motor down. If so I was not aware of such, and can't help you there. Or are you referring to the after coolers and their motor?

Steve

RIDGERUNNER

Thanks for the info. Just got back from looking at the compressors again. I think I"ll go with the 250 cfm Ingersoll. The hour meter showed 1250 hrs. The compressor needs a bath from sitting but all the sheet metal is straight. I believe those are the correct hours on the thing. Everything is in place(even the sound deading insulation) like it should be. Yea, the desiel motor is air-cooled. Its a Deutz. I did some research on them last night. Its a german made motor. I guess that's why its air-cooled(VW bug) huh. They must be pretty reliable though for a company with a reputation like I-R's to use them. They make sizes ranging from single cyl. to 12 cyl. engines. I think they even put them in some of the trucks over in Europe. That compressor is a 4-cyl instead of 6. The guy said he would let me have the compressor,300# pot, what hoses I needed to get started and a air helmet for 4g's. Does that sound like a good deal?

MEDIA MAN

RIDGERUNNER,
Sounds as though you are only aquiring the equipment and not the business itself - am I correct? That sounds like a good deal as long as everything works as it should. I would recommend you get him to run it with you to show you what your up against. can you regulate the psi to the nozzle from the pot? When the pot is pressurized is there any leaks in the piping? Check the air filters on the compressor to see if it looks like its been serviced?
What pot are you buying? Soda pots have a 60 deg. cone on the bottom and regular pots have 45 deg. angle bottoms. As for the hose and everything else, just do your homework to see what the replacement costs are. This will give you an idea of what you are paying for. Are you getting the after coolers and moisture separator included in that price.
Brand new compressor, after coolers, moisture separator and pot I purchased cost me about $26k. The compressor is a 4cyl./90hp John Deere. 150 psi, 210 cfm.


Steve

RIDGERUNNER

Yea its just the equipment. The pot is just a sand pot. I'll still need to get a multi-media pot. I'm working my full time job 11-12 hrs. a day. We're suposed to get together around mid-week to hook everything up and check it out. Where do you get your balsting supplies(hoses,nozzles,etc.)? Any recommendations? The guy is one of my dads friends. He restores alot of old cars. He's getting up their in age and I think he just doesn't have the time or the engery to do it anymore.

plazaman

4gs sounds good to me. I get my stuff from blastandpaint.com and Dan @ IDSblasting.com Dan is very knowlegable in this field.

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doug6423

I paid 12k for a brand new Kaeser which shortly after went up to 16k. It's a 210 cfm and I now wish I would have just paid the extra for a 250cfm. German diesels are nearly indestructible. I have two turbo diesels with both nearing 400,000 miles on them. And my commercial grade lawn mower had 3000 hours on it when I bought it and haven't had any problems with it. It has a 3 cyl Kubota diesel engine. I didn't buy used going into business because I wanted to avoid any surprises on a job site. But my next one will be a used one.
Doug

user20594

Media Man, I am sorry about the crap you had to see when times are hard.

MEDIA MAN

Elaborate on that. What do you mean?

BulldogMedia

panderson2414 are you drunk or high when you post? Most of your post make no sence.

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user20594

BULDOGMEDIA,
HOW MUCH CENTS$. Have you made I have not made any money off your tips. Tell me what I need to do in March to make money., Is it pools, agriculture, or soda blasting. I think in March it is PMB. You tell me!!!!!!

user20594

I, Was talking about Bismark. Sorry if i got it wrong.. I was trying to be a friend, I dont do that very often. Sorry Bismark...

BulldogMedia

panderson2414 why don't you start new post with what you mean instead of posting in a thread that is about somthing else. Even the person that you seem to be posting too did not know what you ment.
My tip to you is take it easy, you come across like a a@@!
I make very good money at my day job thank you. I think that it is great that you have so much business, just remember that you started with nothing at one time most likely.

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