Todd -

Thanks for your reply. My question is a 'what if' -- that being if another
driver flips the switches to raise and leaves them inadvertently. On the
OEM system, the compressors reach a maximum PSI about the same time the OEM
bag does. As you state, the newer bags need less pressure.

So my question is if you unintentionally over inflate them, should there be
a safety precaution, such as a high limit switch or 100 PSI pop off valve?

On Sun, Mar 5, 2017 at 1:11 PM, Todd Sullivan wrote:

> Mark,
> If you current height control and inflation system is functioning correctly
> and you switch to the Sullybilt system there is no need to limit the
> pressure output of the compressor. The system will work exactly as it does
> with the oem bag setup. The air compressors will just not work as hard due
> to lower air pressure required to obtain the same heights with the
> Sullybilt system.
>
> Sully
> 77 eleganza 2
> Seattle
>
> On Fri, Mar 3, 2017 at 6:03 PM mark grady wrote:
>
> I did a quick search on this list, and also looked at the manuals and
> addendum for '78. Here's my question.
>
> By what method is the maximum pressure to the air spring bellows controlled
> by the EL2 system? I'm going to change to a Sully system, which uses less
> air pressure.
>
> The ride height sensors work great. I have cleaned and reconditioned the
> EL2 compressors. I have done the house battery EL2 power mod. In all this,
> I didn't see any high pressure control provision.
>
> I have a twin needle suspension pressure gauge in the McNeil dash. But - If
> someone else is driving and hits the raise buttons, I feel that some kind
> of safeguard is needed to prevent hyper extending the bags. Is there a
> provision in the stock EL2 pumps, or should I just get two NC high pressure
> cutoff switches?
>
> I don't want to add more parts if there is a simpler way. Thanks in
> advance.
>
> Mark Grady
> Northern IN - '78 Kingsley
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

(Yahoo puts in the ridiculous question marks (?) after every period all by itself)

Chuck,
Ref. Big truck air pressure regulars.  Are adjustable regulators available or are they factory set at 70 pounds?  I have the Todd Sullivan's "SullBilt" system.  My air compressor keeps pumping until about 110 PSI  The system works great and apparently 110 PSI doesn't hurt anything but I would like it to shut off earlier.
Tom Whitton26 foot updated GMCPaducah, KY
Message: 10
Date: Mon, 06 Mar 2017 08:13:37 -0700
From: Charles Boyd
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Electrolevel II maximum pressure control
Message-ID:
Content-Type: text/plain;  charset="utf-8"

Sir,  big truck suspensions and brakes work off air.  Compressor keeps storage tanks ~ 125 psi.  They do have 90psi regulators coming out of the tanks.  Big trucks air suspension operates at about 70 psi with 80,000 lb legal on the ground.  Sometimes drivers have been known to double up loads for $$$.  The 90 lb limit is so DOT can recognize a overloaded truck.  The airbags are tough and will take whatever our compressors will put out.  If it will ease your mind just go to big truck dealer and get a regulator for the tank outlet.  The low air light on the big trucks have a sensor in the tank to switch light and buzzer on at 70 lb. 
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org