Dave H M
IL
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Joined: 08/11/2006
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why do separate systems for 5th wheel. We are not going to the brickyard. What if they are separate and one goes flat 
I got the T set up/ fitting from the same place that sent the bags.
I do not subscribe to all the urban legends floating around.
I just put the air chuck on the fitting in the back and air both up at the same time.
If the "air transferr" is so dngerous then is that not the same way the springs work in a similar manner.
So not maybe I started an urban legend and the world will switch to using a T fitting? 
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Charlie Q
Brusly, Louisiana
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Joined: 12/28/2004
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I have mine seperate also. I have the onboard compressor and I can fill them seperatly. I removed the license plate bolts and mounted the fill valves in the top 2 holes. Can't hardly they are there.
'03 Chevy CC/SB,D/A,4X4, Airlift Bags, Bilsteins, Reese slider, Hypertech programmer.
'06 Mobile Scout 31 BWFS
Yamaha 3000ISEB
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tvman44
Southwest Louisiana
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Joined: 09/25/2007
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On my F250 I have the 2 bags "T" together and no problems. Sure is convenient that way.
Papa Bob
1* DW "Granny"
1* 2008 Brookside Sunnybrook 32'
1* 2002 F250 Super Duty 7.3L PSD
Husky 16K hitch, Tekonsha P3,
Firestone Ride Rite Air Springs, Trailair Equa-Flex, Champion C46540
"A bad day camping is better than a good day at work!"
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az99
N.Y.
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Joined: 12/26/2006
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Dave H M wrote: What if they are separate and one goes flat
If the "air transferr" is so dngerous then is that not the same way the springs work in a similar manner.
1. If you have a Tee they will both be flat.
2. Springs do not work the same way. When you take weight off one side of the vehicle and transfer it to the other side, the spring on the light side does not get stronger. When air bags are Teed together the more weight that is put on one side the more air it will transfer to the lighter side which will try to transfer even more weight to the heavy side. Major tipping can occur on a high profile vehicle which was not sprung properly or overloaded. That said, a pickup truck without a heavy high load would probably never notice it.
I tried it on an undersprung motor home and it almost tries to roll it on it's side.
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kcabpilot
CA
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Joined: 04/07/2008
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My question was - did this idea come from the manufacturer or did someone just 'figure' it was a good idea?
I ask because the air springs work by riding on compressed air. If you T the two together then any time there is a lateral shift in the center of gravity (either by the g-force in a turn or a slope or dip in the road) the outboard spring is simply going to deflate and transfer it's air to the inboard spring. The idea that you don't 'notice' anything in an empty pickup makes little sense - why use air springs on an empty pickup to begin with?
If you really want the convienience of a single fill point then do it right and get the check valves from the manufacturer. Just simply T'ing the two together sounds like a 'hack job'
1994 Lance 990 on 1997 F350 PSD Dually
We also have a 'truck' that FLYS
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joshuajim
Mojave Desert
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Joined: 04/29/2006
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pitch black wrote:getting ready to install firestone ride rites going with the T in the line so would have one valve, but talked to a guy i work with and he said not to do it that way, he knows someone that nearly wrecked, cause the weight shifted in a curve to one side, and air from one bag went into the other bag, so now i dont know which way i should go, any input from you all would be great, or if this has ever happen to you. thanks
I would disagree with the "air pressure" shift for several reasons. First, when the vehicles rolls, the bag on the higher side will be compressed less and actually decrease pressure. This same thing will happen wether the bags are linked or not. Second, the pressure will only equalize between the bags, it will not increase pressure in the high side. Finally, the 1/4" line will not transfer enough air in the couple of seconds that the vehicle is leaning to make any difference at all.
Another urban legend.
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wolfe10
Texas
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Joined: 10/08/2000
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You do NOT want them tied together.
As you go around a corner, the outer bag is compressed which means the PSI increases. It is HELPING to resist body lean/roll. At the same time, the inner bag is extended which means the PSI decreases.
If you connect the two, you will shift air from the outer bag to inner bag and this is NOT what you want to do.
Brett Wolfe
1993 Foretravel 36' U-240
Cat 3116, Allison 3060
Caterpillar RV Engine Owner's Club: www.catrvclub.org
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az99
N.Y.
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Joined: 12/26/2006
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joshuajim wrote:
I would disagree with the "air pressure" shift for several reasons. First, when the vehicles rolls, the bag on the higher side will be compressed less and actually decrease pressure. This same thing will happen wether the bags are linked or not. Second, the pressure will only equalize between the bags, it will not increase pressure in the high side. Finally, the 1/4" line will not transfer enough air in the couple of seconds that the vehicle is leaning to make any difference at all.
Another urban legend. You better go take a pneumatics course if you really believe what you posted.
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joshuajim
Mojave Desert
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Joined: 04/29/2006
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az99 wrote:joshuajim wrote:
I would disagree with the "air pressure" shift for several reasons. First, when the vehicles rolls, the bag on the higher side will be compressed less and actually decrease pressure. This same thing will happen wether the bags are linked or not. Second, the pressure will only equalize between the bags, it will not increase pressure in the high side. Finally, the 1/4" line will not transfer enough air in the couple of seconds that the vehicle is leaning to make any difference at all.
Another urban legend. You better go take a pneumatics course if you really believe what you posted.
Since you have obviously taken the "pneumatics course", perhaps you could elucidate not obfuscate.
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az99
N.Y.
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joshuajim wrote:az99 wrote:joshuajim wrote:
I would disagree with the "air pressure" shift for several reasons. First, when the vehicles rolls, the bag on the higher side will be compressed less and actually decrease pressure. This same thing will happen wether the bags are linked or not. Second, the pressure will only equalize between the bags, it will not increase pressure in the high side. Finally, the 1/4" line will not transfer enough air in the couple of seconds that the vehicle is leaning to make any difference at all.
Another urban legend. You better go take a pneumatics course if you really believe what you posted.
Since you have obviously taken the "pneumatics course", perhaps you could elucidate not obfuscate. I don't know what those big words mean but I think I get your point.  I will look up those big words and you lookup how much air a 1/4" OD airline will flow in 2 seconds at 100 PSI. To get you started a standard 1/4" airline has a .035 wall thickness so the true inside flow diameter is .180 inch. Once you calculate that you will see what I mean. Now where is my dictionary.
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