Santa says I've been good
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=131975
Printed Date: 02 Jun 2025 at 10:55pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Santa says I've been good
Posted By: boilerpete
Subject: Santa says I've been good
Date Posted: 29 Nov 2016 at 12:01pm
| So he might bring me an air compressor. I'd use it for sandblasting and painting. How big do I need? Lowes and Tractor Supply both have 60 gallon tanks in Santas price range ($500). Will I be happy with either of them? |
Replies:
Posted By: shameless (ne)
Date Posted: 29 Nov 2016 at 12:21pm
| been good????? ROTFLMAO !!!! |
Posted By: Allis dave
Date Posted: 29 Nov 2016 at 1:19pm
|
painting you don't need a very big compressor unless you're using a really big professional gun. Sand blasting uses a LOT of air. I don't remember the CFM's but I blasted from one compressor that you have to let it pump up to continue. Got tiresome. It's more about CFM's than how big the tank is. |
Posted By: steve(ill)
Date Posted: 29 Nov 2016 at 1:26pm
|
Yea, tank size is not the biggest problem, CAPACITY is the important part. Most of the "base line" compressors in the $400-500 range have volumes of about 7-9 CFM. You can blast away for 3-4 minutes until the pressure drops and the pump starts up again. If will not maintain pressure putting out 7-9 CFM....... I have a 60 gallon tank with a 15 CFM compressor. It will just about maintain constant pressure when blasting. I might stop every 10 minutes for 1 minute to let it catch up... MAX PRESSURE is not that importante either... VOLUME/ CFM is what you need. The 7-9 CFM will work OK for painting as you don't paint a 100 psi, more like 40 psi. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 29 Nov 2016 at 1:29pm
|
this is not the one I have, but the capacity is similar. Mine is 10 years old and a big TWIN cyl.... same basic quality.
http://www.northerntool.com/shop/tools/product_200641298_200641298?cm_mmc=Bing-pla&utm_source=Bing_PLA&utm_medium=Air%20Tools%20%2B%20Compressors%20%3E%20Stationary%20Air%20Compressors&utm_campaign=NorthStar&utm_content=47501" rel="nofollow - http://www.northerntool.com/shop/tools/product_200641298_200641298?cm_mmc=Bing-pla&utm_source=Bing_PLA&utm_medium=Air%20Tools%20%2B%20Compressors%20%3E%20Stationary%20Air%20Compressors&utm_campaign=NorthStar&utm_content=47501 ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 29 Nov 2016 at 1:48pm
|
This is more of the "generic" compressor I was talking about. Has about 2/3 the volume you need to do sand blasting. Its a good unit for general garage use. Puts out about 10 CFM at 90 psi...... farm stores, lowes, menards, everyone sells "similar" for $450- 500.
Just a little small for blasting or running grinders. I have painted with them.
-
http://www.homedepot.com/p/Husky-60-Gal-Electric-Air-Compressor-VT6314/100083906" rel="nofollow - http://www.homedepot.com/p/Husky-60-Gal-Electric-Air-Compressor-VT6314/100083906 ------------- Like them all, but love the "B"s. |
Posted By: Steve in NJ
Date Posted: 29 Nov 2016 at 2:20pm
|
Pete, I have a 80 gallon upright with twin head/5HP and it just (and I mean just) keeps up with my large glassbead cabinet that I can do a car fender in. Steve is right on. You need big time CFM (17 or more) to sandblast with. Keep savin' yr' sheckles, cause this is where the "bigger is better" saying fits in. The one you need for sandblasting will run closer to $950-$1200. but money well spent... ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: JoeM(GA)
Date Posted: 29 Nov 2016 at 2:43pm
|
check your amps draw on the motor before you buy, be sure you have the power available at your home or shop to pull the startup load before you spend good money!
------------- Allis Express North Georgia 41 WC,48 UC Cane,7-G's, Ford 345C TLB |
Posted By: Stan IL&TN
Date Posted: 29 Nov 2016 at 3:08pm
|
If you have room you can do as I did. I have three 120 volt compressors connected together. 20 gallon downstairs and two 30 gallon units up in the attic. When I'm blasting they will all come on one after the other and stay running. I have enough air to blast continually but give the compressors a break every 30 minutes or so to cool down. I have the air going into a water/air separator and then through a desiccant to remove moisture for both blasting and painting. ------------- 1957 WD45 dad's first AC 1968 one-seventy 1956 F40 Ferguson |
Posted By: Dan73
Date Posted: 29 Nov 2016 at 5:55pm
| A friend of mine found a used military compressor that is gas powered for his sand blaster. Makes since if you don't want to blast much because you really don't want to pay the inrush current for that high CFM compressor everytime you want air for a tire or tool. Most of the time a high volume tank and lower CFM pump like you see at the box stores will be all you need. |
Posted By: Dave H
Date Posted: 29 Nov 2016 at 5:59pm
|
I think a 10 CFM sat 90 psi would get an average small time sand blaster like me by, or I should say it has. I do have two 60 gallon tanks hooked together to get the jump start though. The two tank system helps since hot compressed air tends to run the water vapor thru the separator and then it condensed at the sand nozzle and causes those four letter words. I hate that job.  |
Posted By: Dan73
Date Posted: 29 Nov 2016 at 6:06pm
|
I like the multiple compressor idea. I have a couple if decent 110 compressors and a 5hp gas wheel barrow compressor here I should look into hooking then all together when I want to sand blast. I can tell you the small wheel barrow or roofing compressors are priceless if you have equipment and alot of land. Thought people where crazy when they told me I would love that thing but I find I take it to my equipment broken down in a field more often then anything else. |
Posted By: darrel in ND
Date Posted: 29 Nov 2016 at 6:16pm
| Dan, I got a good buy on a wheel barrow style compressor this summer, and I love mine, too. Mostly bought it for blowing off the combine, and it'll almost keep up to continual running the blow gun. I use it for running the impact and many other things, also. Very good investment. Darrel |
Posted By: AJ
Date Posted: 29 Nov 2016 at 6:22pm
|
I have the 80gal from Lowes. Love it! ------------- Can't fix stupid |
Posted By: allis g
Date Posted: 29 Nov 2016 at 8:15pm
| Atlas 80 gallon tank, three cylinder two stage compressor, 15 CFM@100 PSI. Can blast all day long. Two air dryers in line. |
Posted By: allis g
Date Posted: 29 Nov 2016 at 8:17pm
| Those smaller compressors will run all the time while a bigger compressor just idles along. Less expensive to run in the long run. |
Posted By: LeonR2013
Date Posted: 29 Nov 2016 at 11:26pm
| A compressor that needs a 3450 RPM motor leaves a lot to be desired. One that uses a motor at half that speed is much more efficient. Doesn't cost as much to run and you get a longer duty cycle. |
Posted By: steve(ill)
Date Posted: 30 Nov 2016 at 7:10am
|
Leon, why would a low speed motor be more efficient ? MOST of the compressors run about 1000 RMP, but they are run by either 1800 or 3400 RMP motors. I don't see what difference it makes on the MOTOR as long as the COMPRESSOR does not run over 1200 RPM ... and hopefully less than that. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 30 Nov 2016 at 7:13am
|
HP = TORQUE x speed so if you take a 5 HP motor at 1800 RPM or a 5 HP motor at 3450 RPM, the low speed motor has to make TWICE the TORQUE to get the same Horse Power... that makes it much heavier. ------------- Like them all, but love the "B"s. |
Posted By: boilerpete
Date Posted: 30 Nov 2016 at 11:06am
|
Thanks for all the replies! One question for you guys that run multiple compressors piped together. Do you have a check valve in there to keep the air moving in one direction? I have a two smaller compressors already, so I'll have to check capacities- I might have enough ooomph if I tie them together.
|
Posted By: Dan73
Date Posted: 30 Nov 2016 at 12:18pm
| I don't know if this is the right way but I have seen two comprssor just put into a t fitting with no check valves. I was told the trick was to set the start and stop pressure so the smaller compressor would come one and off at a higher pressure that way you only use the bigger one when the smaller cheaper to run compressor can't handle the load. But the guy I saw do it was as backwoods redneck as you can get. |
Posted By: CAL(KS)
Date Posted: 30 Nov 2016 at 12:20pm
|
pete, when i sandblasted the rims and centers on my 190 I ran 2 compressors in tandem. my home compressor (cheapo cummins tool deal) and our gas powered portable unit. i plummed them together into our 30 gallon air bomb and ran 1/2 inch hose to the sandblaster. in total was about 120 gal total capacity. it was a 100lb pressurized unit. i could blast for a good while but i was glad to take a break and let the compressors catch up. i did not use any check valves, used 3- 1/4 connections and a 1/2 made into a cross so that the 2 compressor inlets fed the portable air bomb and 1/2 hose as the same time.
the cross was made from 1/2 pipe and fittings ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Posted By: Allis dave
Date Posted: 30 Nov 2016 at 1:11pm
| I don't think you need a check valve. Basically all the lines and tanks plumbed together act as One big tank. |