| Re: [GMCnet] Sullybilt Single bag Rear Suspension [message #241268] |
Mon, 24 February 2014 20:43  |
Jim Bounds
Messages: 842
Registered: January 2004
Karma:
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Senior Member |
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Too bad you missed your opportunity at Coos Bay to tell us all about it.
I have had several of the "air bag plus 2 spacers at the shop. I even rigged up one called it "big ole bag". All of them ibcluding the one I put together would hold the ass of the coach up but still, when you drop a tire or the bag you are stopped with something needung to be done right then. Have you checked the amplification of the lateral movement of the bag attaching points when the coach goes into a tight turn? Same probkem as the "dual bag system, side motion is great. Bags work well in 2 directions not 3. What engineering was done, hold the bag between the arms and measure how thick the spacer/ adapter needs to be to reach the arms.
Cost is 1/2 that of a quad bag system, heck you get twice the number of air bags plus 100 pounds of carefully cut and welded 2 piece brackets that fit like a glove gold zinc plated just cause it could be. There is a valve control manifold that costs $75 if you want one for a single bag system. "So simple to install " sounds like a cook on TV talking about how easy it is to whip up a meal. Doesnt say much about his talents if all he prepares is easy stuff! I would rather spend those big bucks on something that takes 3 people all day to cook. I would not tout how easy it is to install. I say it takes a selection of 3/4" wrenches and a few well placed cuss words to install a quad bag system, folks who have done it can speak about ease of install. I prepare them with real comments.
Why do sone feel owning a GNC shoud be a dead heat to see how cheap t ou can be. You totally get what you pay for. You may have done well in yourcareer and t ou can afford to have a motorhome. I can tell you no one here has a 401k or a bank account offshore. If we water down our market with so many option fir sonethubf that its not profitable ror anyone. One day there may be no retrofit air bag systems available. You get tired or playing in this sand box, there's no money in it for you so yi ur deal goes away. Dealers are trying to be here for the long haul. No one c an say the quad bag system is flawed or not built well. Why not get something that withstands the test if time. Stop buying cheap, price is always a big consideration but it should not be the biggest selling ooint
I say all of this and know, I do not build the quad bag, Jim K. does and has a pretty sizeable financial unvestment to bring it to market. I just know it works, helped in the design to make more installer friendly, which it is. Do not even argue there was more design put into anything but the quad bag system, just isn't so.
Jim Biunds
-------- Original message --------
From: Todd Sullivan <sgltrac@comcast.net>
Date: 02/24/2014 2:26 PM (GMT-05:00)
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Sullybilt Single bag Rear Suspension
Recent posts about pressure related issues and the Quadra Bag rear suspension system has prompted me to restate qualities of the Sullybilt rear suspension system which are core to the reasons for its development and success.
There is no need to change, adjust or replace ANY part of the existing air supply or metering hardware on a properly functioning coach system to utelize the Sullybilt sytem. The ONLY part which needs to be touched is the airspring itself.
If you have at least one oem airspring which will hold air then you already have a free spare to carry in the unlikely event you have an airspring failure. If a tire were to come apart and damage the airspring, the existing leftover oem bag can be reinstalled at the same time as the spare wheel and you are on your way. The complete Sullybilt sytem is removed as an assembly and the oem airspring put back in its place. No plumbing or ride height mechanical changes are required as the ride height is read by the oem sytem off of bogie arm movement not air pressure.
Installation of the Sullybilt system requires properly supporting the rear of the coach under or near the bogie box, depressurizing and removing the existing oem airspring and replacing it with the Sullybilt assembly. Often the most challenging part of the installation is removal of rusted T skirt fasteners (if coach is equipped with such) or frozen oem airspring fasteners.
The Sullybilt single airspring system operates at a much lower air pressure ( typically 35-60psi are the norm as compared to the oem sytems which see typical pressures over 100psi) which takes a lot of load off of existing compressor sytems which are "past their half life by now".
The Firestone W01-358-9294 which is used with the Sullybilt sytem has a HIGHER load rating than the oem airspring and thus likely a higher load rating than the currently produced copy of the oem airspring. The FI 9294 airspring also has an integrated internal rubber bump stop which can prevent undercarriage and wheel well damage in the event the motorhome is moved while an airbag is deflated or a sudden loss of pressure is experienced (catastrophic airspring failure) while underway.
Simplicity/oem like performance/ease of installation/dependability/low cost compared to other available systems.
Find out more at www.bdub.net/sully/
--
Sully
77 Royale
Seattle, wa
Future land speed record holder fully equipped motorhome (bucket list)
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