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08-09-2012, 08:13 AM
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#1
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3 Rivet Member
2004 30' Land Yacht Gas 30
Canadensis
, Pennsylvania
Join Date: Nov 2011
Posts: 167
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Land Yacht 30 Air Bag Pressure?
Hi Folks,
I've been running 80 psi in the front bags of my '04 and it seem harsh; the manual says 90 psi.
What's everyone running in their 2001 to 2005 Land Yacht 30? I'd appreciate your experience with it; both good and bad.
Best regards and safe travel to all…
Randy
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08-09-2012, 09:11 PM
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#2
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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I used to run 50 psi because that's what I read to do here on the forums. I don't remember what the manual says, but lately, I've been running with 80 psi in the bags. I honestly cannot tell if it makes much difference.
The bags seem to lose their pressure easily, so they often sink back down to the 50's. They are a bit of a hassle to check and refill, so I fill them to the 80's and hope they stay above 60.
I do feel that they do something to smooth out the front end ride, so I like to keep them up there if I think of it.
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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08-10-2012, 04:35 AM
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#3
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4 Rivet Member
2015 30' Flying Cloud
Currently Looking...
Evansville
, Indiana
Join Date: Jul 2004
Posts: 280
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I run mine at 60 PSIG. They have remote fills that are approximately over the top of the radiator and in direct line of sight when the hood is open. I had problems with my original bags not holding pressure, so I had both changed out. They now hold pressure for at least a month without any noticible loss. I used Air Lift bags.
Sam
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08-10-2012, 06:28 AM
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#4
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3 Rivet Member
2004 30' Land Yacht Gas 30
Canadensis
, Pennsylvania
Join Date: Nov 2011
Posts: 167
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Bob & Sam:
Thanks for your input…
Due to a 100% failure of one of the front air bags on my rig, I had both replaced back in March of this year. Originally set at 55 psi, and then raised to 80 psi, because of learning that there’s supposedly a difference between pre-2001 and ’01 to ‘05, I’ve not lost pressure; knock on wood. Set at 80 psi 2000 miles ago, it still reads in the same immediate area today; although on a reasonably “inaccurate" slide style pressure gauge. If I were to use a digital gauge, I’m sure there’d be a small difference.
I guess, and your input bears it out, maybe 90 is too harsh and 60 might be a better way to go; or in Michigander’s case, the coach *wants* to go there.
I wonder though, was there a structural reason why Airstream upgraded the pressure recommendation from 55 psi to 90 psi in 2001; after all, it’s still an 18,000 lb. P32 chassis. I can’t believe a 454 to 496 engine would require a suspension change.
Maybe some more folks will weigh-in on the subject.
Best regards and safe travel to all…
Randy
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08-11-2012, 04:17 AM
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#5
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4 Rivet Member
2015 30' Flying Cloud
Currently Looking...
Evansville
, Indiana
Join Date: Jul 2004
Posts: 280
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As an aside, from time to time, I see ads for new front coil springs that eliminate the need for the air bags. Any comments? With my new bags reliably holding pressure, I don't see the need for the revised spring.
Sam
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08-11-2012, 08:22 AM
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#6
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2 Rivet Member
2005 30' Land Yacht Gas 30
Belgrade
, Montana
Join Date: Oct 2011
Posts: 55
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We run ours at 70. Have not tried a higher amount, at 55 we could feel the difference in the handling. Ours does leak but as long as the pressure is checked along with the tires before we head out not looking at replacement.
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08-11-2012, 08:46 PM
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#7
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Rivet Master
1993 33' Land Yacht
Midland
, Michigan
Join Date: Sep 2005
Posts: 508
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Quote:
Originally Posted by Airstream12557
As an aside, from time to time, I see ads for new front coil springs that eliminate the need for the air bags. Any comments? With my new bags reliably holding pressure, I don't see the need for the revised spring.
Sam
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When GM manufactured their P30/32 chassis, they did not know how much weight the motor home coach builder through their design were going to be putting on the front of the MH. That is why they use springs with air bags that are supposed to be inflated to match the finish weight of the coach. The problem is the air bag style springs don't match the exact finish weight, and therefore, contribute to bottoming out, swaying, poor handling and poor tire life. Coil springs are manufactured to fit the exact weight of your MH, thereby preventing these problems. This is what SuperSteer Coil Springs claims their coil springs do to improve handling, and eliminate weak springs and troublesome air bags inside coil springs. www.supersteersuperstop.com I put them on my coach and have been very satisfied with ride and not always having to check front end bags.
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08-11-2012, 10:49 PM
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#8
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Rivet Master
1982 28' Airstream 280
Port Angeles
, Washington
Join Date: Aug 2008
Posts: 1,943
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Quote:
Originally Posted by RAG
Bob & Sam:
I wonder though, was there a structural reason why Airstream upgraded the pressure recommendation from 55 psi to 90 psi in 2001; after all, it’s still an 18,000 lb. P32 chassis. I can’t believe a 454 to 496 engine would require a suspension change.
Maybe some more folks will weigh-in on the subject.
Best regards and safe travel to all…
Randy
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Randy the older and smaller coaches were lighter. My '82 280 has a P-30 chassis rated at 14,500 lb. My book calls for 55 psi. in the bags
Cheers, Dan
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08-14-2012, 11:29 PM
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#9
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4 Rivet Member
2005 30' Land Yacht 30 SL
Castro Valley
, California
Join Date: Jun 2008
Posts: 425
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My workhorse book says 90 psi, and that'w waht I target, but we have only been able to get out every 2-3 months this year. It bleeds down over that time, but I don't remember how far, and I carry a small 12v compressor just in case.
__________________
Cliff & Andrea,
two snowshoe cats, have not been camping yet
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08-15-2012, 09:50 PM
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#10
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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Went out camping last Saturday, checked my airbags before pushing off and found the right one to be holding pressure well, but the left one has a leak right from the center of it. (I used soapy water to find the leak.) So we drove north 175 miles and it felt just fine.
On the way home, I totally deflated the right one and drove with essentially no airbags. Still felt just fine.
So what do I do now? Get a new left airbag? Get new appropriately sized springs? How would I decide what size springs?
For now I think I'll wait till I have to drive in a really annoying cross wind to see if I really do need airbags.
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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08-16-2012, 11:23 AM
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#11
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3 Rivet Member
2000 31' Land Yacht
Fort Erie
, Ontario
Join Date: Apr 2011
Posts: 185
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Hi All
I had a leak on right bag. It was a PITA to check everyday. Finally got coach weighed and replaced the bags and springs with Henderson's SS springs and an alignment. Had to also replace front tires as the old were feathering due to bad geometry of front end with the one soft bag. Handling was a problem with the bags. YL would not drive it. Original spec for pressure was 50-55psi
Best move I could make, ASLY2000 now sails like a dream.
Regards,
Steve
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08-16-2012, 01:41 PM
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#12
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3 Rivet Member
2004 30' Land Yacht Gas 30
Canadensis
, Pennsylvania
Join Date: Nov 2011
Posts: 167
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If I knew back in March, when I replaced the front air bags, what I know today, the dollars would have been better spent in springs rather than new bags. And for what the bags & installation cost, the decision for springs over bags, would have been easy to justify.
We're hoping to head to Maine for a few weeks at the end of the month; I think I'll drop to 60 psi for starters and see how it feels. I carry a 110v air compressor on-board, so engaging the front jacks to lift her and running up the pressure is simple.
Good to hear from all of you.
Best regards and safe travel…..
Randy
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08-16-2012, 07:54 PM
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#13
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New Member
Ft. Myers
, Florida
Join Date: Jun 2012
Posts: 2
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I removed My bags and had the frontend realigned. It rides much better and handles much better. I think because the front is about 1.5 inches lower and feels more stable. My 2 cents.
Joe
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08-16-2012, 08:28 PM
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#14
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3 Rivet Member
2004 30' Land Yacht Gas 30
Canadensis
, Pennsylvania
Join Date: Nov 2011
Posts: 167
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Quote:
Originally Posted by glasair
I removed My bags and had the frontend realigned. It rides much better and handles much better. I think because the front is about 1.5 inches lower and feels more stable. My 2 cents.
Joe
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Welcome aboard glasair! What's your rig? Photos always appreciated...
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08-17-2012, 07:34 PM
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#15
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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Quote:
Originally Posted by glasair
I removed My bags and had the frontend realigned. It rides much better and handles much better. I think because the front is about 1.5 inches lower and feels more stable. My 2 cents.
Joe
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Hello Joe, please tell us what you're riding. Did you simply deflate the bags? or actually have them removed. Can I just take a knife and cut 'me out? I'm tempted to leave them deflated and not replace them either.
If I do this do I really have to get another alignment?
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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09-03-2012, 08:22 PM
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#16
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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Just returned from a 470 mile round trip for the weekend. I left the airbags deflated and it drove like a champ. Maybe the springs they put on the '05's are stiff enough without airbags.
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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02-12-2013, 08:22 PM
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#17
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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New Front End Coil Springs and Bell Cranks
[QUOTE=Airstream12557;1186818]As an aside, from time to time, I see ads for new front coil springs that eliminate the need for the air bags. Any comments? With my new bags reliably holding pressure, I don't see the need for the revised spring.
Sam[Quote]
Just received my new Super Steer springs this week. Will have them installed next week. I hope they are worth it.
Also bought new bell cranks because the steering wheel moves a lot from side to side without any wheel movement. Looked underneath while the DW rocked the steering wheel back and forth and saw a LOT of play in the stock bell cranks. Hope this helps.
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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02-14-2013, 09:17 AM
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#18
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3 Rivet Member
2000 31' Land Yacht
Fort Erie
, Ontario
Join Date: Apr 2011
Posts: 185
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I replaced my airbags with the Hendersons super steer springs, new bell cranks other bits n pieces in the front end new tires and alignment. The front end was sloppy and due to the (mostly) flat airbag, had to replace steerers (feathering). The YL could not drive ASLY as was, now she handles real nice, best move could have made.
Goto Hendersonslineup, has lots of good info. Leaving bags in deflated might cause chafe and will need to be replaced/removed.
Am very happy getting rid of the bags.
Steve
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02-14-2013, 12:34 PM
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#19
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Rivet Master
2005 30' Land Yacht 30 SL
Oakland County
, Michigan
Join Date: Jul 2007
Posts: 506
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Losing the Airbags! Yeaaah!
Can't wait to have the springs and bell cranks installed. Also bought new Super Steer idler arms and drag link. Will report back after they're installed.
__________________
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad
Michigan
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02-15-2013, 10:03 PM
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#20
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Rivet Master
1993 33' Land Yacht
Midland
, Michigan
Join Date: Sep 2005
Posts: 508
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You won't regret it. You will notice the difference right away.
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