Home » Public Forums » GMCnet » Replacing air bag system
| Re: [GMCnet] Replacing air bag system [message #248015 is a reply to message #247999] |
Sun, 20 April 2014 19:59   |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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Senior Member |
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| A Hamilto wrote on Sun, 20 April 2014 18:42 |
| A Hamilto wrote on Sun, 20 April 2014 18:37 |
| USAussie wrote on Sun, 20 April 2014 18:34 |
A,
I am proponent of the KISS principle and since Lane's GMC is a '73 Canyonlands I'd suggest he put the Power Level back.
I love mechanical, hydraulic, and pneumatic systems because I'm an electrically challenged electrophobe! 
Regards,
Rob M.
Sydney, Australia
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I agree. And I can see how my technical examples, being mostly about electro level systems, might lead one to believe that I was advocating electro level over power level. Both of mine have power level systems.
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Here's some help with that
http://www.gmceast.com/technical/Denney_Power_Level_System.pdf
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Here's enough links from Mr. ERF to get it done
http://gmcmotorhome.info/levelsch.htm#Power
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| Re: Replacing air bag system [message #248023 is a reply to message #247891] |
Sun, 20 April 2014 20:55 |
Jim Rountree
Messages: 47
Registered: July 2010
Location: San Antonio, TX
Karma: 0
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Member |
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I have followed the salvage of coached and have obtained two Electrolevel 1 system at a reasonable cost. watch for late model 1976 and 1977 coaches.
Jim Rountree
San Antonio,TX
76 PB,
76 Royale RB
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| Re: Replacing air bag system [message #248065 is a reply to message #247891] |
Mon, 21 April 2014 12:10 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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Lane,
One option is to replace the airbags first. And then
add the compressor and height control valves later as
the budget affords.
The compressor and control valves will set you back several
hundred dollars.
You might be able to rig up air lines with remote schrader valves
and a shut off valve at the air bag.
You would be able to drive it that way and air-up with a portable
compressor or at filling stations. The Sully air bag uses lower
air pressure and can be inflated at filling stations.
Regards,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: Replacing air bag system [message #248070 is a reply to message #247891] |
Mon, 21 April 2014 12:48 |
sgltrac86
Messages: 49
Registered: April 2011
Location: BELLEVUE WA
Karma: 0
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You can install a schrader valve directly into the airbag where the line attaches and cover and strap the line out of the way until you are ready to rejuvenate the auto level system or go with a different system such as wireless air. The lower operating pressures of the Sullybilt work well with the parameters of the wireless system or the original system.
Sully
77 Eleganza 2 ( Recherché )
Seattle, wa
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| Re: Replacing air bag system [message #248077 is a reply to message #247891] |
Mon, 21 April 2014 14:17 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Perhaps I'm missing something but how does the wireless system know what the correct height is? Bag pressure is not the same thing as ride height.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Replacing air bag system [message #248081 is a reply to message #248077] |
Mon, 21 April 2014 14:30 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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As "Keith V" stated, it doesn't know. I imagine you need to adjust the system until it "sits right" and then record the bag pressure that causes that to happen. When leaving the campsite (or other location) set the pressures accordingly.
That's MY guess, anyway. My Electro-Level works but lots of leaks in the plumbing lead me to pressurize the bags to give desired height then turn off the Schraders.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~~ k2gkk @ hotmail dot com ~~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> To: gmclist@temp.gmcnet.org
> From: Pinkertonk@MCHSI.com
> Date: Mon, 21 Apr 2014 14:17:47 -0500
> Subject: Re: [GMCnet] Replacing air bag system
>
>
>
> Perhaps I'm missing something but how does the wireless system know what the correct height is? Bag pressure is not the same thing as ride height.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
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| Re: [GMCnet] Replacing air bag system [message #248082 is a reply to message #248077] |
Mon, 21 April 2014 14:43 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Kerry, All systems are controlled by air pressure in the bags. If the bags
are OEM, QUADRA-BAG, SULLIBUILT, or any other incarnation. All the ride
height sensors do is control the air pressure. All of the GM installed
systems have a built in time delay of around 20 seconds or thereabouts to
keep crown roads, bridge approaches, etc. from making the systems work
while going down the road. So, this negates the idea that the system
maintains exact ride height going down the road. OEM systems sense when
enough air has leaked from the system, start the compressors and adjusts
the air pressure in the bags until the ride height sensor reaches it's pre
set null point, and stops adding air to the bag.
Funny thing, the wireless system constantly monitors air pressure that was
pre selected as the amount of pressure necessary to achieve correct ride
height. A transponder and wireless modem in the manifold communicate with
the pre set pressure in the remote control, and maintains air pressure in
the bags, plus or minus 3 psi. The system requires no air lines other than
the ones from the manifold to the bags, and only three electrical
connections. It has the added features of pre set pressures for dumping the
tanks with one touch of a button, and returning to ride height merely by
pushing another button. The remote control can also be used to campsite
level the coach, with the same return to ride height, one touch of a
button. Choice is yours, I guess.
JIM HUPY
Salem, Or
GMC ROYALE 403
On Apr 21, 2014 12:17 PM, "Kerry Pinkerton" <Pinkertonk@mchsi.com> wrote:
>
>
> Perhaps I'm missing something but how does the wireless system know what
> the correct height is? Bag pressure is not the same thing as ride height.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
> an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Replacing air bag system [message #248083 is a reply to message #248082] |
Mon, 21 April 2014 14:57 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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I don't agree that it negates the idea that the system maintains and adjusts the ride height when traveling.
If you are driving on a crowned road for more than the 20 second delay time it will adjust the bag pressure to keep you more level. Also, when the amount of water in your water tank or holding tanks changes it will make adjustments for that and the same goes for fuel tank levels and passenger or cargo loads.
The wireless system would appear to be better than manually filling the bags and shutting off the valves at the bags but it doesn't replace a properly working air bag system which is controlled by the Travel position of the control switches.
Emery Stora
On Apr 21, 2014, at 1:43 PM, James Hupy <jamesh1296@gmail.com> wrote:
> Kerry, All systems are controlled by air pressure in the bags. If the bags
> are OEM, QUADRA-BAG, SULLIBUILT, or any other incarnation. All the ride
> height sensors do is control the air pressure. All of the GM installed
> systems have a built in time delay of around 20 seconds or thereabouts to
> keep crown roads, bridge approaches, etc. from making the systems work
> while going down the road. So, this negates the idea that the system
> maintains exact ride height going down the road. OEM systems sense when
> enough air has leaked from the system, start the compressors and adjusts
> the air pressure in the bags until the ride height sensor reaches it's pre
> set null point, and stops adding air to the bag.
> Funny thing, the wireless system constantly monitors air pressure that was
> pre selected as the amount of pressure necessary to achieve correct ride
> height. A transponder and wireless modem in the manifold communicate with
> the pre set pressure in the remote control, and maintains air pressure in
> the bags, plus or minus 3 psi. The system requires no air lines other than
> the ones from the manifold to the bags, and only three electrical
> connections. It has the added features of pre set pressures for dumping the
> tanks with one touch of a button, and returning to ride height merely by
> pushing another button. The remote control can also be used to campsite
> level the coach, with the same return to ride height, one touch of a
> button. Choice is yours, I guess.
> JIM HUPY
> Salem, Or
> GMC ROYALE 403
> On Apr 21, 2014 12:17 PM, "Kerry Pinkerton" <Pinkertonk@mchsi.com> wrote:
>
>>
>>
>> Perhaps I'm missing something but how does the wireless system know what
>> the correct height is? Bag pressure is not the same thing as ride height.
>> --
>> Kerry Pinkerton
>>
>> North Alabama, near Huntsville,
>>
>> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
>> an Art Deco car hauler
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
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| Re: [GMCnet] Replacing air bag system [message #248084 is a reply to message #248083] |
Mon, 21 April 2014 15:31 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Emery, a couple of years ago, as a technical program at GMCWS, Gary Bovee,
Jerry Work, Gary Berry, Frank Condos, myself and others measured ride
height and weighed arriving coaches at the Casa De Fruita rally. After a
day and a half, we discontinued weights and measures. The data that we
gained told us that NONE of the arriving coaches was correct in either ride
height or weight balancing. If what you say is correct, all the OEM
equipped coaches should have at least been at ride height or close. Most of
them were inches low in the front as well as uneven in front. Nearly every
coach was too high in the rear. The data we gathered tells me that there
are very few coaches out there that have correctly adjusted and/or properly
operating systems. That being said, I think it matters very little whether
a system is controlled by pneumatic/hydraulic valves, electronic ride
sensors or transponder air pressure controls. Nearly all of them have
flaws. I guess you pick the ones you are most comfortable with and go with
that.
Jim Hupy
Salem, Or
78 GMC ROYALE 403 with wireless air.
On Apr 21, 2014 12:57 PM, "Emery Stora" <emerystora@mac.com> wrote:
> I don't agree that it negates the idea that the system maintains and
> adjusts the ride height when traveling.
> If you are driving on a crowned road for more than the 20 second delay
> time it will adjust the bag pressure to keep you more level. Also, when
> the amount of water in your water tank or holding tanks changes it will
> make adjustments for that and the same goes for fuel tank levels and
> passenger or cargo loads.
>
> The wireless system would appear to be better than manually filling the
> bags and shutting off the valves at the bags but it doesn't replace a
> properly working air bag system which is controlled by the Travel position
> of the control switches.
>
> Emery Stora
>
> On Apr 21, 2014, at 1:43 PM, James Hupy <jamesh1296@gmail.com> wrote:
>
> > Kerry, All systems are controlled by air pressure in the bags. If the
> bags
> > are OEM, QUADRA-BAG, SULLIBUILT, or any other incarnation. All the ride
> > height sensors do is control the air pressure. All of the GM installed
> > systems have a built in time delay of around 20 seconds or thereabouts to
> > keep crown roads, bridge approaches, etc. from making the systems work
> > while going down the road. So, this negates the idea that the system
> > maintains exact ride height going down the road. OEM systems sense when
> > enough air has leaked from the system, start the compressors and adjusts
> > the air pressure in the bags until the ride height sensor reaches it's
> pre
> > set null point, and stops adding air to the bag.
> > Funny thing, the wireless system constantly monitors air pressure that
> was
> > pre selected as the amount of pressure necessary to achieve correct ride
> > height. A transponder and wireless modem in the manifold communicate with
> > the pre set pressure in the remote control, and maintains air pressure in
> > the bags, plus or minus 3 psi. The system requires no air lines other
> than
> > the ones from the manifold to the bags, and only three electrical
> > connections. It has the added features of pre set pressures for dumping
> the
> > tanks with one touch of a button, and returning to ride height merely by
> > pushing another button. The remote control can also be used to campsite
> > level the coach, with the same return to ride height, one touch of a
> > button. Choice is yours, I guess.
> > JIM HUPY
> > Salem, Or
> > GMC ROYALE 403
> > On Apr 21, 2014 12:17 PM, "Kerry Pinkerton" <Pinkertonk@mchsi.com>
> wrote:
> >
> >>
> >>
> >> Perhaps I'm missing something but how does the wireless system know what
> >> the correct height is? Bag pressure is not the same thing as ride
> height.
> >> --
> >> Kerry Pinkerton
> >>
> >> North Alabama, near Huntsville,
> >>
> >> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
> >> an Art Deco car hauler
> >> _______________________________________________
> >> 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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| Re: [GMCnet] Replacing air bag system [message #248085 is a reply to message #248083] |
Mon, 21 April 2014 15:43 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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Whoah there ....
And this negates the ride height how???
You are completely wrong. The time delay in no way negates the ride height maintenance. It is very much an active system and maintains the ride height pretty closely, More closely than a spring system, which is always wrong, or a pressure only system which is right only by luck or by a lot of fiddling every time the height needs to be set.
I know you like to sell the wireless air system, but don't be trying to distort reality.
The wireless Air system does not maintain _height_, it maintains _pressure_. The OEM systems maintain _height_.
End of Story.
| Quote: |
All of the GM installed
systems have a built in time delay of around 20 seconds or thereabouts to keep crown roads, bridge approaches, etc. from making the systems work while going down the road. So, this negates the idea that the system maintains exact ride height going down the road. OEM systems sense when enough air has leaked from the system, start the compressors and adjusts the air pressure in the bags until the ride height sensor reaches it's pre set null point, and stops adding air to the bag.
|
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] Replacing air bag system [message #248086 is a reply to message #248085] |
Mon, 21 April 2014 15:56 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Keith, I have the utmost respect for your personal opinions and your right
to express them. This subject is kinda like 5 BLIND guys looking at an
elephant. One has the tusks, another the tail, another the ear and so on.
None of them has enough information to be objective about what an elephant
looks like. I work on GMC motor homes every day. I see them in all kinds of
condition. My opinions are formed from experience working on lots of them.
You are entitled to your opinions just as I am to mine. Just the way it is,
I guess.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Apr 21, 2014 1:43 PM, "Keith V" <my427v8@hotmail.com> wrote:
>
>
> Whoah there ....
> And this negates the ride height how???
>
> You are completely wrong. The time delay in no way negates the ride height
> maintenance. It is very much an active system and maintains the ride height
> pretty closely, More closely than a spring system, which is always wrong,
> or a pressure only system which is right only by luck or by a lot of
> fiddling every time the height needs to be set.
>
> I know you like to sell the wireless air system, but don't be trying to
> distort reality.
>
> The wireless Air system does not maintain _height_, it maintains
> _pressure_. The OEM systems maintain _height_.
>
> End of Story.
>
>
> Quote:
> > All of the GM installed
> > systems have a built in time delay of around 20 seconds or thereabouts
> to keep crown roads, bridge approaches, etc. from making the systems work
> while going down the road. So, this negates the idea that the system
> maintains exact ride height going down the road. OEM systems sense when
> enough air has leaked from the system, start the compressors and adjusts
> the air pressure in the bags until the ride height sensor reaches it's pre
> set null point, and stops adding air to the bag.
>
> --
> Keith
> 69 Vette
> 29 Dodge
> 75 Royale GMC
> Mounds View. MN
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Replacing air bag system [message #248087 is a reply to message #248084] |
Mon, 21 April 2014 16:20 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Please quit trying to put words in my mouth and just read my message for exactly what I say. NO, that does NOT mean that all OEM coaches should have been at ride height. I had said in my last message that properly adjusted coaches are well controlled if the air system is leak free and properly maintained. Obviously, many if not most GMCs are not properly adjusted. The torsion bars weaken over years of use and must be checked and adjusted periodically. The air bag level sensors also can change over time. The air bags weaken over time and the pressure that once worked must be changed to maintain the proper ride height.
Even your air bag control is only adjusted properly for a time. It would also have to be periodically adjusted due to aging air bags, torsion bars etc., differences in loading, etc. Do you tell people that they can set it once and forget it ?
Emery Stora
> On Apr 21, 2014, at 2:31 PM, James Hupy <jamesh1296@gmail.com> wrote:
>
> Emery, a couple of years ago, as a technical program at GMCWS, Gary Bovee,
> Jerry Work, Gary Berry, Frank Condos, myself and others measured ride
> height and weighed arriving coaches at the Casa De Fruita rally. After a
> day and a half, we discontinued weights and measures. The data that we
> gained told us that NONE of the arriving coaches was correct in either ride
> height or weight balancing. If what you say is correct, all the OEM
> equipped coaches should have at least been at ride height or close. Most of
> them were inches low in the front as well as uneven in front. Nearly every
> coach was too high in the rear. The data we gathered tells me that there
> are very few coaches out there that have correctly adjusted and/or properly
> operating systems. That being said, I think it matters very little whether
> a system is controlled by pneumatic/hydraulic valves, electronic ride
> sensors or transponder air pressure controls. Nearly all of them have
> flaws. I guess you pick the ones you are most comfortable with and go with
> that.
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403 with wireless air.
>> On Apr 21, 2014 12:57 PM, "Emery Stora" <emerystora@mac.com> wrote:
>>
>> I don't agree that it negates the idea that the system maintains and
>> adjusts the ride height when traveling.
>> If you are driving on a crowned road for more than the 20 second delay
>> time it will adjust the bag pressure to keep you more level. Also, when
>> the amount of water in your water tank or holding tanks changes it will
>> make adjustments for that and the same goes for fuel tank levels and
>> passenger or cargo loads.
>>
>> The wireless system would appear to be better than manually filling the
>> bags and shutting off the valves at the bags but it doesn't replace a
>> properly working air bag system which is controlled by the Travel position
>> of the control switches.
>>
>> Emery Stora
>>
>>> On Apr 21, 2014, at 1:43 PM, James Hupy <jamesh1296@gmail.com> wrote:
>>>
>>> Kerry, All systems are controlled by air pressure in the bags. If the
>> bags
>>> are OEM, QUADRA-BAG, SULLIBUILT, or any other incarnation. All the ride
>>> height sensors do is control the air pressure. All of the GM installed
>>> systems have a built in time delay of around 20 seconds or thereabouts to
>>> keep crown roads, bridge approaches, etc. from making the systems work
>>> while going down the road. So, this negates the idea that the system
>>> maintains exact ride height going down the road. OEM systems sense when
>>> enough air has leaked from the system, start the compressors and adjusts
>>> the air pressure in the bags until the ride height sensor reaches it's
>> pre
>>> set null point, and stops adding air to the bag.
>>> Funny thing, the wireless system constantly monitors air pressure that
>> was
>>> pre selected as the amount of pressure necessary to achieve correct ride
>>> height. A transponder and wireless modem in the manifold communicate with
>>> the pre set pressure in the remote control, and maintains air pressure in
>>> the bags, plus or minus 3 psi. The system requires no air lines other
>> than
>>> the ones from the manifold to the bags, and only three electrical
>>> connections. It has the added features of pre set pressures for dumping
>> the
>>> tanks with one touch of a button, and returning to ride height merely by
>>> pushing another button. The remote control can also be used to campsite
>>> level the coach, with the same return to ride height, one touch of a
>>> button. Choice is yours, I guess.
>>> JIM HUPY
>>> Salem, Or
>>> GMC ROYALE 403
>>>> On Apr 21, 2014 12:17 PM, "Kerry Pinkerton" <Pinkertonk@mchsi.com>
>>> wrote:
>>>
>>>>
>>>>
>>>> Perhaps I'm missing something but how does the wireless system know what
>>>> the correct height is? Bag pressure is not the same thing as ride
>> height.
>>>> --
>>>> Kerry Pinkerton
>>>>
>>>> North Alabama, near Huntsville,
>>>>
>>>> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
>>>> an Art Deco car hauler
>>>> _______________________________________________
>>>> 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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>> Unsubscribe or Change List Options:
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> _______________________________________________
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| Re: [GMCnet] Replacing air bag system [message #248090 is a reply to message #248087] |
Mon, 21 April 2014 16:42 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
|
Senior Member |
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| James Hupy wrote on Mon, 21 April 2014 15:56 |
Keith, I have the utmost respect for your personal opinions and your right
to express them. This subject is kinda like 5 BLIND guys looking at anelephant. One has the tusks, another the tail, another the ear and so on.None of them has enough information to be objective about what an elephantlooks like. I work on GMC motor homes every day. I see them in all kinds ofcondition. My opinions are formed from experience working on lots of them.You are entitled to your opinions just as I am to mine. Just the way it is,I guess.
|
1. I stated no opinions.
2. I never said the OEM system could not be misadjusted
3. You are the one trying to claim there is no elephant in the room.
I'm done. I will not reply to this thread again.
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
|
|
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| Re: [GMCnet] Replacing air bag system [message #248093 is a reply to message #248086] |
Mon, 21 April 2014 17:04 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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| James Hupy wrote on Mon, 21 April 2014 14:56 |
Keith, I have the utmost respect for your personal opinions and your right
to express them. This subject is kinda like 5 BLIND guys looking at an
elephant. One has the tusks, another the tail, another the ear and so on.
None of them has enough information to be objective about what an elephant
looks like. I work on GMC motor homes every day. I see them in all kinds of
condition. My opinions are formed from experience working on lots of them.
You are entitled to your opinions just as I am to mine. Just the way it is,
I guess.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Apr 21, 2014 1:43 PM, "Keith V" <my427v8@hotmail.com> wrote:
>
>
> Whoah there ....
> And this negates the ride height how???
>
> You are completely wrong. The time delay in no way negates the ride height
> maintenance. It is very much an active system and maintains the ride height
> pretty closely, More closely than a spring system, which is always wrong,
> or a pressure only system which is right only by luck or by a lot of
> fiddling every time the height needs to be set.
>
> I know you like to sell the wireless air system, but don't be trying to
> distort reality.
>
> The wireless Air system does not maintain _height_, it maintains
> _pressure_. The OEM systems maintain _height_.
>
> End of Story.
>
>
> Quote:
> > All of the GM installed
> > systems have a built in time delay of around 20 seconds or thereabouts
> to keep crown roads, bridge approaches, etc. from making the systems work
> while going down the road. So, this negates the idea that the system
> maintains exact ride height going down the road. OEM systems sense when
> enough air has leaked from the system, start the compressors and adjusts
> the air pressure in the bags until the ride height sensor reaches it's pre
> set null point, and stops adding air to the bag.
>
> --
> Keith
> 69 Vette
> 29 Dodge
> 75 Royale GMC
> Mounds View. MN
> _______________________________________________
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One system (remote) is open loop in that there is no feedback to re-adjust to where you thought it was, while the OEM system is a closed loop. However, neither is that precise that it probably isn't worth arguing about. I think the remote system is a good alternative for a lot of people, but since I have a working system, I'll try to keep it that way.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Replacing air bag system [message #248102 is a reply to message #248101] |
Mon, 21 April 2014 18:11 |
Guy Lopes
Messages: 499
Registered: April 2004
Location: Sacramento, CA
Karma: 3
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Senior Member |
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Rob,
I have a Power Level system in my 76 Birchaven. I'm anxious to see what you
put together. Thanks for doing that.
Guy Lopes
76 Birchaven "Orion"
Sacramento, CA
W6TOL
www.GMC-Guy.com
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robert Mueller
Sent: Monday, April 21, 2014 4:11 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Replacing air bag system
The problem with this thread is that it is FULL of OPINIONS and a dearth of
facts.
I finished the Cooling System Flushing Procedure and am currently working on
the lower steering column shaft / steering box alignment which I promised
I'd try to finish before the GMCWS Rally.
I have a folder that contains a lot of data on the Power Level System which
I will use to put together an email that people can use to make an informed
decision as to what system to choose.
I'm NOT going to address the Electrolevel I or Electrolevel II as I don't
know shit from Shineola about them and they have WIRES going to them!
Regards,
Rob M.
Sydney, Australia
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Guy Lopes
76 Birchaven "Orion"
Sacramento, CA
W6TOL
www.GMC-Guy.com
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