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Re: [GMCnet] AIR COMPRESSORS CFM RATINGS [message #125046 is a reply to message #125011] Sun, 08 May 2011 01:30 Go to previous messageGo to previous message
KRDietz is currently offline  KRDietz   United States
Messages: 133
Registered: July 2010
Karma:
Senior Member


>
> On Sat, May 7, 2011 at 1:57 PM, KRDietz<krdietz@gmail.com> wrote:
>> 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.


Jim Kanomata wrote:
> The original one is constant duty.

Guess I didn't know that. I'll have to look that up.

I know mine didn't work well enough, even after a rebuild. Used a cheap
Shucks compressor for a couple years. That definitely wasn't the
answer. :^)

> I have owned these coaches for over 30 years and have been in
> situations where I lowered both bags to camp then had to pump up both.

Only had mine for 9 years, but I do that all the time. When I store the
coach I set blocks under the bogey block and dump the bags. Every time
I use the coach I pump the system from dead empty to 75-80psi. That's
air tank and bags on a '73, of course. Takes about 4 minutes, last time
I measured. Well within specs for these 25% Viairs.


> There was a company that sold 70% duty units as direct replacement for
> our standard compressors and had nothing but complaints. Now they warn
> you of that when you purchase one.

Could be their 70% was optimistic. Or their compressors were just junk.

> This type of questioning started way before most even thought of
> purchasing one of these coaches.

I wasn't around then, I'm afraid.

If these compressors only last a couple/three years I'll be sure to let
folks know that 25% duty cycle isn't good enough. Logic, and how they
SAY you can use them, says it is. I did my research beforehand. I
certainly didn't discount the fact that you sold 100% duty cycle
compressors but decided that shouldn't be necessary.

It's almost like "Because we've always done it that way" is a personal
challenge sometimes. I know it drove my Dad nuts. :^)

Kelvin
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