[Shop-talk] More compressor questions

Tue Aug 10 15:32:15 MDT 2021

I’ve had the same Craftsman oil-less unit for about 25 years.  The only repair has been the regulator a couple years ago.  My biggest like is that the air is clean when I use it for painting, biggest drawback is the incredibly high noise level.  I’ve got a shut off valve right at the air output that does a great job of holding the line pressure.  I keep the compressor on all the time and when I go to use it it has full pressure so avoid start up pressurization racket.  
Best, 
Bob
Sent from my iPhone

> On Aug 10, 2021, at 3:05 PM, Mark Andy <marka at maracing.com> wrote:
> 
> 
> Howdy,
> 
> If I were buying a compressor today and the air requirements were modest, I would be looking HARD at one of the super quiet compressor types that are available now.
> 
> HF link just because it's easy, but there are also name brand versions of this type of thing IIRC...
> 
> https://www.harborfreight.com/26-gallon-175-psi-ultra-quiet-vertical-shopauto-air-compressor-57336.html
> 
> Mark
> 
>> On Tue, Aug 10, 2021 at 2:42 PM old dirtbeard <dirtbeard at gmail.com> wrote:
>> Hi John,
>> 
>> The oil-less compressors probably are good enough for casual use, but the ones that I have been around were noisy, probably because they tend to have aluminum blocks and that they tend to spin at higher RPM than the larger, heavier cast iron oil-type compressors.
>> 
>> The noise they make also seems more annoying to my ear, anyway. A larger, slower spinning pump emits noise, of course, but it does not seem as harsh as the noise from the oil-less compressor that I have heard.
>> 
>> One advantage of the oil-less compressors is that they will not inject oil into the air supply if you are spraying paint.
>> 
>> FYIW
>> 
>> best,
>> 
>> doug
>> 
>>> On Tue, Aug 10, 2021 at 11:25 AM John T. Blair <jblair1948 at cox.net> wrote:
>>> 
>>> Thanks again for all the replies to my original post about my compressor motor
>>> not working.
>>> 
>>> With all this going on, I have been doing some thinking about having to buy a new  
>>> compressor if I can't get this motor running.  That said, this compressor appears 
>>> to come with a 3hp, 4hp, and 5hp motor.  I have the 5hp.  I know that when it
>>> comes to getting a new compressor, bigger is better, to the extent of your budget.  
>>> 
>>> 1. What is the advantage of the different hp motors.  I know the big advantage
>>> for the 5hp is it runs on 220V.  But how does the hp affect the compressor.  
>>> Based on the info in the manual, it appears that all 3 versions have the same 
>>> SCFM specs.
>>> 
>>> My current compressor is an oil lubricated one.  
>>> 
>>> 2. I see oil-less compressors that supposedly have fantastic specs for air supply
>>> that are so much cheaper than oil lubed versions.  Any thoughts?
>>> 
>>> 3.  Any body have an oil-less compressor?  How do you like it?  I was reading an
>>> article that was talking about how the oil-less versions have come a long ways.  
>>> They were saying that the biggest advantage for the oil liubes was for high air
>>> demand over a long time like in a commercial shop.  But my dad's compressor,
>>> a 4hp 220V 20 gal unit and my 5hp 220V 30 gal rig were all oil lubed.  We got dad's
>>> compressor back in the 60s and it was still running when he passed in 2015.  I 
>>> bought mine back about '90.  So I lean toward them.  But is that realistic?
>>> 
>>> John
>>> 
>>> 
>>> 
>>> 
>>>  	
>>> This email has been checked for viruses by Avast antivirus software. 
>>> www.avast.com
>>> 
>>> 
>>> 
>>> John T. Blair  WA4OHZ     email:  jblair1948 at cox.net
>>> Va. Beach, Va                  Phone:  (757) 495-8229
>>> 
>>>           48 TR1800    48 #4 Midget    65 Morgan 4/4 Series V (B1106)
>>>      75 Bricklin SV1 (#0887)    77 Spitfire    71 Saab Sonett III
>>>                        65 Rambler Classic
>>> 
>>> Morgan:    www.team.net/morgan
>>> Bricklin:     www.bricklin.org
>>> 
>>> If you can read this             - Thank a teacher!
>>> If you are reading it in English - Thank a Vet!!
>>> 
>>> From Dennis Prager - The American Trilogy:
>>>      e pluribus Unum, "from many, one."
>>>      In God We Trust
>>>      Liberty - the  power  of  choosing,  thinking,  and  acting  for 
>>>                   oneself; freedom  from  control  or  restriction 
>>> 
>>> 
>>> _______________________________________________
>>> 
>>> Shop-talk at autox.team.net
>>> Donate: http://www.team.net/donate.html
>>> Suggested annual donation  $12.96
>>> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive
>>> 
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/dirtbeard@gmail.com
>>> 
>> _______________________________________________
>> 
>> Shop-talk at autox.team.net
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation  $12.96
>> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive
>> 
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/marka@maracing.com
>> 
> _______________________________________________
> 
> Shop-talk at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.96
> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive
> 
> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/rrochlin@comcast.net
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/shop-talk/attachments/20210810/a17de7d7/attachment.htm>