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| AIR COMPRESSORS CFM RATINGS [message #124953] |
Sat, 07 May 2011 09:09  |
Peg
Messages: 124
Registered: April 2011
Location: Montana
Karma: 0
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Senior Member |
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We are going to change the Air Compressor
What have some of you put in? Specifically need to know
the CFM rating @ 0 pressure
and
CFM rating as pressure (psi) goes up.
CFM specs?
At minimal, the brand some of you put in and what lead you to this brand vs. another...We can check specs.
Thanks in Advance!
****edited to make our query more meaningful****
We are looking for MORE, quicker fill of reserve air, if I need to make this question more clear. Mark wants the ability to run other equipment from this compressor other than only filling the air bags. We are looking into means of a larger tank.
Mark has looked at Phoenix (US made) and Viair (he couldn't remember origin) and another tank made in Turkey...
We want CFM, and PSI. So far the largest CFM on a 12 volt available is 2.5 CFM...
Right now we either have to rebuild the old compressor, Mark do a McGyver to a faster CFM compressor he has at the shop, OR we get a new one and add additional reserve air in a imaginative way.
We need to replace the compressor and looking for the best in recovery and most practical for the airbag and additional uses. Why have a "mobile" "built-in" compressor sitting on a motorhome that only will fill an airbag?
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
[Updated on: Sat, 07 May 2011 11:16] Report message to a moderator |
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| Re: AIR COMPRESSORS CFM RATINGS [message #124965 is a reply to message #124953] |
Sat, 07 May 2011 11:10  |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
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Unless you run a much larger compressor, I don't think you'll be able to do much more than fill the airbags and use it to fill tires. Any tool larger than an airbrush would take a much larger compressor.
I've been very pleased with my Viair, and would recommend them as a replacement. Either of the Jims or Adohan Supply can set you up very well, and would be great on giving good advice.
,Viair also has a website that has the specs for their compressors. Harbor Freight sells a Viair knockoff in a carrying case that I carry as an emergency backup.
George Rudawsky
Chicago, IL
75 Palm Beach
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| [GMCnet] OFF NET RE: AIR COMPRESSORS CFM RATINGS [message #124970 is a reply to message #124953] |
Sat, 07 May 2011 11:24 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Peg,
I'm responding off net as I don't want to ruffle any feathers.
I replaced my OEM pump with a Viair 480C. That is the largest pump they
make. The Viair 450C is adequate.
I got mine off e-Bay.
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Peg
Sent: Saturday, May 07, 2011 10:10 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] AIR COMPRESSORS CFM RATINGS
We are going to change the Air Compressor
What have some of you put in? Specifically need to know
the CFM rating @ 0 pressure
and
CFM rating as pressure goes up.
CFM specs?
At minimal, the brand some of you put in and what lead you to this brand vs.
another...We can check specs.
Thanks in Advance!
--
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] OFF NET RE: AIR COMPRESSORS CFM RATINGS [message #124974 is a reply to message #124970] |
Sat, 07 May 2011 11:34 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Well, big boy, you have some feathers to smooth!
LOL
Dennis
Sent from my iPhone
On May 7, 2011, at 11:24 AM, "Rob Mueller" <robmueller@iinet.net.au>
wrote:
> Peg,
>
> I'm responding off net as I don't want to ruffle any feathers.
>
> I replaced my OEM pump with a Viair 480C. That is the largest pump
> they
> make. The Viair 450C is adequate.
>
> I got mine off e-Bay.
>
> Regards,
> Rob M.
> USAussie - Downunder
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org
> [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Peg
> Sent: Saturday, May 07, 2011 10:10 AM
> To: gmclist@temp.gmcnet.org
> Subject: [GMCnet] AIR COMPRESSORS CFM RATINGS
>
>
>
> We are going to change the Air Compressor
>
> What have some of you put in? Specifically need to know
>
> the CFM rating @ 0 pressure
> and
> CFM rating as pressure goes up.
>
> CFM specs?
>
> At minimal, the brand some of you put in and what lead you to this
> brand vs.
> another...We can check specs.
>
> Thanks in Advance!
>
>
>
> --
> Montanan with a Dream ...
> Dreams do come TRUE don't they?
> Mark & Peg
> South Central Montana
>
> 1974 Sequoia 722/1,496
> 1974 Excella 500 RT
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: AIR COMPRESSORS CFM RATINGS [message #124975 is a reply to message #124953] |
Sat, 07 May 2011 11:36 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Here is what I went with:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5506
The explanation is in the captions. My original Dana compressor would pump up the tank to 140 PSI, but made an embarrassing amount of noise doing it. The new Viair is much quieter and does the job in less time. It is a 100% duty cycle unit and specs can be found on Viair's web page. There are some 25% and 35% duty cycle units that actually pump at a higher CFM rating, that would also be more than adequate since they do not operate constantly.
Jim K. also has a (I believe Firestone) compressor on his site that is a bit larger and will pump up the system faster, if you feel you need that.
I have put a considerable amount of time into my air system, including JR Slaten "Power Level II" dash valves, an electronic regulator, from Jim B. an adjustable safety valve, from Jim K, and numerous nuts and ferules, to stop annoying leaks.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: AIR COMPRESSORS CFM RATINGS [message #124976 is a reply to message #124965] |
Sat, 07 May 2011 11:39 |
Peg
Messages: 124
Registered: April 2011
Location: Montana
Karma: 0
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| GeorgeRud wrote on Sat, 07 May 2011 11:10 |
Unless you run a much larger compressor, I don't think you'll be able to do much more than fill the airbags and use it to fill tires. Any tool larger than an airbrush would take a much larger compressor.
I've been very pleased with my Viair..
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The CFM (recovery of air to tank) may only be available to a 2.5, we would add additional reserve air tanks for doing other jobs. thinking impact....or ANYTHING else. A long piece of something attached on either bumper would be tanks to store extra air. Recovery time of air is important.
Thanks for your evaluation on the Viair...this is the info we need, too.
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
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| Re: [GMCnet] OFF NET RE: AIR COMPRESSORS CFM RATINGS [message #124978 is a reply to message #124970] |
Sat, 07 May 2011 11:46 |
Peg
Messages: 124
Registered: April 2011
Location: Montana
Karma: 0
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Senior Member |
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| Robert Mueller wrote on Sat, 07 May 2011 11:24 |
Peg,
I'm responding off net as I don't want to ruffle any feathers.
|
TOO CUTE !!!! LOL
| Robert Mueller wrote on Sat, 07 May 2011 11:24 |
I replaced my OEM pump with a Viair 480C. That is the largest pump they make. The Viair 450C is adequate.
I got mine off e-Bay.
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
|
Thanks Rob...no feathers should be ruffled...We are only seeking knowledge and people's experience....Not a huff and puff discussion. Quick recovery and adequate psi...all we want is what people have already purchased or have done research about. This saves us a boot load (tank load) of time... We WILL be installing additional "unconventional" methods of storing more air for larger capacity requirements.
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
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| Re: AIR COMPRESSORS CFM RATINGS [message #124984 is a reply to message #124975] |
Sat, 07 May 2011 12:37 |
Peg
Messages: 124
Registered: April 2011
Location: Montana
Karma: 0
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Senior Member |
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| Carl S. wrote on Sat, 07 May 2011 11:36 |
Here is what I went with:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5506
The explanation is in the captions. My original Dana compressor would pump up the tank to 140 PSI, but made an embarrassing amount of noise doing it. The new Viair is much quieter and does the job in less time. It is a 100% duty cycle unit and specs can be found on Viair's web page. There are some 25% and 35% duty cycle units that actually pump at a higher CFM rating, that would also be more than adequate since they do not operate constantly.
Jim K. also has a (I believe Firestone) compressor on his site that is a bit larger and will pump up the system faster, if you feel you need that.
I have put a considerable amount of time into my air system, including JR Slaten "Power Level II" dash valves, an electronic regulator, from Jim B. an adjustable safety valve, from Jim K, and numerous nuts and ferules, to stop annoying leaks.
|
Nice set up Carl.
Quiet is good and we haven't even gotten to the generator. 
Thanks for your link to your documentation. I love it when the links are in the post....Saves us newbies from doing a search and getting lost. I personally forget what I'm searching to find because I get fixated by some other thing regarding GMC motorhomes that came up while I am doing a web search to find a person that was mentioned in a thread as an expert or a source...
A.D.D kinda...or maybe is...never was a medical condition when I grew up...So maybe I have it...doesn't matter...I enjoy the links for less complicated research without distraction.
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
[Updated on: Sat, 07 May 2011 12:48] Report message to a moderator |
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| Re: AIR COMPRESSORS CFM RATINGS [message #124988 is a reply to message #124953] |
Sat, 07 May 2011 13:26 |
GMC Cruse
Messages: 606
Registered: June 2009
Location: SE Michigan
Karma: 3
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My GMC has a PO installed pancake air compressor and a hose reel which runs off the generator or land line. PO also tied it into the air suspension system so that,in an emergency, by turning a valve, it can be used to inflate the air bags. It works good for filling the bags,tires, etc. but not real good for lug nuts. This compressor supplements the regular 12 volt one.
Mike K.
'75 PB
Southeast Michigan
[Updated on: Sat, 07 May 2011 13:29] Report message to a moderator |
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| Re: [GMCnet] AIR COMPRESSORS CFM RATINGS [message #124989 is a reply to message #124988] |
Sat, 07 May 2011 13:38 |
Robin Hood
Messages: 1078
Registered: April 2011
Karma: 3
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Are there people with compressors capable of running for-real airtools?
On Sat, May 7, 2011 at 1:26 PM, Mike <carcruse@comcast.net> wrote:
>
>
> My GMC has a PO installed pancake air compressor and a hose reel which runs off the generator or land line. PO also tied it into the air suspension system so that,in an emergency, by turning a valve, it can be used to inflate the air bags. It works good for filling the bags,tires, etc. but not real good for lug nuts.
> --
> Mike K.
> '75 PB
> Southeast Michigan
> _______________________________________________
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--
Robin Hood
Jackson, MS
2003 Buick Lesabre
1968 Pontiac Catalina
1978 GMC Royale motorhome
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| Re: AIR COMPRESSORS CFM RATINGS [message #124991 is a reply to message #124953] |
Sat, 07 May 2011 13:46 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| Peg wrote on Sat, 07 May 2011 09:09 |
We are going to change the Air Compressor
We need to replace the compressor and looking for the best in recovery and most practical for the airbag and additional uses. Why have a "mobile" "built-in" compressor sitting on a motorhome that only will fill an airbag?
|
Some time back someone mentioned a way to re work an engine driven York AC compressor to pump air. I believe SteveF has/had a similar compressor driven by a 120v motor.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: AIR COMPRESSORS CFM RATINGS [message #124992 is a reply to message #124984] |
Sat, 07 May 2011 13:49 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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| Peg wrote on Sat, 07 May 2011 10:37 |
| Carl S. wrote on Sat, 07 May 2011 11:36 |
Here is what I went with:
http://www.gmcmhphotos.com/photos/showgallery.php?cat=5506
The explanation is in the captions. My original Dana compressor would pump up the tank to 140 PSI, but made an embarrassing amount of noise doing it. The new Viair is much quieter and does the job in less time. It is a 100% duty cycle unit and specs can be found on Viair's web page. There are some 25% and 35% duty cycle units that actually pump at a higher CFM rating, that would also be more than adequate since they do not operate constantly.
Jim K. also has a (I believe Firestone) compressor on his site that is a bit larger and will pump up the system faster, if you feel you need that.
I have put a considerable amount of time into my air system, including JR Slaten "Power Level II" dash valves, an electronic regulator, from Jim B. an adjustable safety valve, from Jim K, and numerous nuts and ferules, to stop annoying leaks.
|
Nice set up Carl.
Quiet is good and we haven't even gotten to the generator.
Thanks for your link to your documentation. I love it when the links are in the post....Saves us newbies from doing a search and getting lost. I personally forget what I'm searching to find because I get fixated by some other thing regarding GMC motorhomes that came up while I am doing a web search to find a person that was mentioned in a thread as an expert or a source...
A.D.D kinda...or maybe is...never was a medical condition when I grew up...So maybe I have it...doesn't matter...I enjoy the links for less complicated research without distraction.
|
Thank you.
It took me quite a while to get the air system sorted out. The P.O. didn't use it and just filled the air bags using Schrader valves at the bags.
I started with the obvious leaks, Fittings on the air lines, the pressure regulator, the safety valve, etc. I eliminated the switch that turns on the dash light (low air light) because Jim B. told me that was usually a source of leaks. I wired the compressor to a relay and added a second relay to turn on the low air light, so I can see when the compressor is running. I still had leaks and finally traced them to the Power Level valves. After I replaced those, things were much better.
At a Saguaro Jetset rally last year, I pulled in to the RV park with my compressor running, and Steve Ferguson came up to me and said "that's the noisiest Dana air pump I have ever heard". I hadn't had anything to compare it to, so I didn't realize... I had been wanting to do something with the compressor and, weighing my options, decided to spring for the Viair that Jim B. handles,instead of rebuilding the Dana. It works well for me.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] AIR COMPRESSORS CFM RATINGS [message #124996 is a reply to message #124989] |
Sat, 07 May 2011 15:46 |
Peg
Messages: 124
Registered: April 2011
Location: Montana
Karma: 0
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| Robin Hood wrote on Sat, 07 May 2011 13:38 |
Are there people with compressors capable of running for-real airtools?
--
Robin Hood
Jackson, MS
2003 Buick Lesabre
1968 Pontiac Catalina
1978 GMC Royale motorhome
|
Well, recovery rate (CFM), and storage of air the compressor has a lot to do with this. Do you want to wait 6 minutes in between lugs? BUT you get my drift robin hood...where we are headed. Alternative uses....
GREAT GREAT lively input...thanks all. Keep em coming. I'll be going to these sites (if i don't get lost looking for them) to look at what others have done.
Montanan with a Dream ...
Dreams do come TRUE don't they?
Mark & Peg
South Central Montana
1974 Sequoia 722/1,496
1974 Excella 500 RT
[Updated on: Sat, 07 May 2011 15:51] Report message to a moderator |
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| Re: [GMCnet] AIR COMPRESSORS CFM RATINGS [message #124997 is a reply to message #124984] |
Sat, 07 May 2011 15:45 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Do not get a compressor that does not have 100% duty cycle.
Sometimes you'll need that ability to run it for more than several mnutes.
On Sat, May 7, 2011 at 10:37 AM, Peg <canoecalm@yahoo.com> wrote:
>
>
> Carl S. wrote on Sat, 07 May 2011 11:36
>> Here is what I went with:
>>
>> http://www.gmcmhphotos.com/photos/showgallery.php?cat=5506
>>
>> The explanation is in the captions.  My original Dana compressor would pump up the tank to 140 PSI, but made an embarrassing  amount of noise doing it.  The new Viair is much quieter and does the job in less time.  It is a 100% duty cycle unit and specs can be found on Viair's web page.  There are some 25% and 35% duty cycle units that actually pump at a higher CFM rating, that would also be more than adequate since they do not operate constantly.
>>
>> Jim K. also has a (I believe Firestone) compressor on his site that is a bit larger and will pump up the system faster, if you feel you need that.
>>
>> I have put a considerable amount of time into my air system, including JR Slaten "Power Level II" dash valves, an electronic regulator, from Jim B. an adjustable safety valve, from Jim K, and numerous nuts and ferules, to stop annoying leaks.
>
>
> Nice set up Carl.
> Quiet is good and we haven't even gotten to the generator. :roll:
> Thanks for your link to your documentation. Â I love it when the links are in the post....Saves us newbies from doing a search and getting lost. Â I personally forget what I'm searching to find because I get drawn to some other thing that came up while I am doing a web search to find a person that was mentioned in a thread as an expert or a source...
> --
> Montanan with a Dream ...
> Dreams do come TRUE don't they?
> Mark & Peg
> South Central Montana
>
> 1974 Sequoia 722/1,496
> 1974 Excella 500 RT
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] AIR COMPRESSORS CFM RATINGS [message #124999 is a reply to message #124997] |
Sat, 07 May 2011 15:57 |
KRDietz
Messages: 133
Registered: July 2010
Karma: 0
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On 5/7/2011 1:45 PM, Jim Kanomata wrote:
> Do not get a compressor that does not have 100% duty cycle.
> Sometimes you'll need that ability to run it for more than several
> minutes.
When, Jim?
I really thought about it and couldn't come up with a need. Unless
there is something broken that you should fix, of course. Big leak in
the system, for instance...
It's possible I missed something, but if the system is working as
designed I can't imagine what.
Too late for me, of course, I'm committed to my setup, but others would
like to know, I'm sure.
Kelvin
'73 23' in Eugene, OR
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