F-450 sag and still with air bags
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. Anyone else experience this? |
F-450 sag and still with air bags
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. And it is still hitting the overloads Anyone else experience this? |
Originally Posted by porthole
(Post 14505686)
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. And it is still hitting the overloads Anyone else experience this? bags should be able to get to 100psi.. so 55 isn't much. |
agree - his setup is not 'set-up' :)
bags are probably rated at 5000 lbs (depending on the set he got) and if setting his at max psi doesn't lift it, then he either has more pin wgt than he guesses 3500+ pin + 1000 bed + ????lb 'Stuff in the trunk' +......? OR he has an issue with the bags - broken or only 1000 lb bags ? let us know what you find please ! |
Originally Posted by jdadamsjr
(Post 14505730)
agree - his setup is not 'set-up' :)
bags are probably rated at 5000 lbs (depending on the set he got) and if setting his at max psi doesn't lift it, then he either has more pin wgt than he guesses 3500+ pin + 1000 bed + ????lb 'Stuff in the trunk' +......? OR he has an issue with the bags - broken or only 1000 lb bags ? let us know what you find please ! |
Originally Posted by sdetweil
(Post 14505716)
what is the RAWR capacity on a 450? 5000?
bags should be able to get to 100psi.. so 55 isn't much. |
IIRC, with the bags aired up the ride is unacceptable.
My old truck with 3500 pound of pin never needed more then 60psi, and that was a 2500 SRW I don't remember what the psi was on my current air ride loaded, but unloaded I am only running 23-25 psi. And I have no leaf springs. |
Originally Posted by porthole
(Post 14505778)
IIRC, with the bags aired up the ride is unacceptable.
My old truck with 3500 pound of pin never needed more then 60psi, and that was a 2500 SRW I don't remember what the psi was on my current air ride loaded, but unloaded I am only running 23-25 psi. And I have no leaf springs. |
Originally Posted by sdetweil
(Post 14505806)
no springs?
https://www.ford-trucks.com/forums/1...uspension.html |
Originally Posted by porthole
(Post 14505890)
Read through if you care, but don't waste your money.
https://www.ford-trucks.com/forums/1...uspension.html I only run 8 or 9psi. |
Originally Posted by sdetweil
(Post 14505762)
can you use stableloads and bags together effectively?
Im not using the stableloads to gain height ,bags do that.Im using them to stop the slap you can get when hitting bumps etc while towing when I hit the overloads. |
just thought id throw this in
theres a guy who lives around me who hauls cars with his ram 3500 chassis cab i believe, either way he has a western hauler type bed on the back. he's got what looks like to me a 100+ gallon tank retrofitted from a semi truck mounted behind his cab he was filling up yesterday at the gas station i was filling up at. he was hauling 3 new silverados on his wedge trailer and what caught my attention was the fact that his truck was sitting level. so i asked him whats he doing to keep i like that he showed me these huge airbags he had mounted inside the frame i cannot remember the name of the kit but the springs were sitting about an inch away from the overloads. now clearly he was hauling over weight i used to have the same trailer and it weighed around 7500lbs dry via the cat scales near my house. so larger bags is what i would recommend with keeping in mind they don't add to your gvwr |
Originally Posted by porthole
(Post 14505682)
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. Anyone else experience this? Something just doesn't seem right in this situation. Either the weight of the body and the pin weight is more than he thinks it is, the truck springs are weak or a combination of the two. It sounds like he is dealing with 1200-1400 lbs more weight than me, but he is a 450 and I'm SRW 350. Did the upfitter than installed the body remove the helper springs or modify the stops that engage them? |
Originally Posted by porthole
(Post 14505682)
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. Anyone else experience this? Dang MATT...I should've typed faster!! LOL |
See my post in your other thread. Go up on PSI and/or change out the rear blocks for the F350 SRW ones that are 4" high and that will help a lot.
|
comment in the other thread was that increased pressure yields a harsh ride.
I gotta think that means without load.. you will have to adjust the pressure depending on load.. I have the airlift Wireless One controller so I can do that. |
Originally Posted by sdetweil
(Post 14506098)
comment in the other thread was that increased pressure yields a harsh ride.
I gotta think that means without load.. you will have to adjust the pressure depending on load.. I have the airlift Wireless One controller so I can do that. (so do I and love it :)) |
Mods may want to merge the two threads since they are in the same forum now :)
|
Originally Posted by porthole
(Post 14505686)
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. And it is still hitting the overloads Anyone else experience this? He will not have a sagging problem with SS's. The ride quality in my truck is just fine and I never have to worry about adjusting air pressure. Also, the design of the SS makes sense because you are distributing the load to the factory designed points on the frame for more stability. Of course, I also have Hellwig Big Wig sway bar and my setup is rock solid. I do not want to start a debate on which is better, but it sounds like your friend might benefit from the SS's. |
The 4" blocks was my first suggestion. If the numbers are right, he is not getting a lot of lift form the bags. I'll get to see it first hand on Wednesday through Sunday though.
Adding air much over 60 starts to degrade the ride, regardless of the load. |
The 4" blocks was my first suggestion. If the numbers are right, he is not getting a lot of lift form the bags. I'll get to see it first hand on Wednesday through Sunday though.
Adding air much over 60 starts to degrade the ride, regardless of the load. |
Is it possible to adjust the lower mounts? I know the lower mount for the SRW trucks is height adjustable.
|
Originally Posted by porthole
(Post 14505686)
Question for those with the F-450 and heavy towing.
I have a friend with a 2011 F-450 with a Classy Chassis hauler bed (real nice BTW). The bed adds about 1000 pounds over stock bed weight. He has Firestone airbags. He is a traveler, so the truck is packed with the essentials. With his trailer hitched up and I'm guessing 3500+ of pin weight, the truck still has the sag, even with 55-60 PSI of air in the bags. And it is still hitting the overloads Anyone else experience this? Airbags and StableLoads work great in conjunction – however in a lot of cases I’ve seen, those who have tried the StableLoads first did not need to move forward with installing airbags. Check out this thread on some experiences other users have had – LINK. Let him know he can find dealer in the area on our website, however if there are any questions just send me a PM. :) Torklift Sheryl |
Threads merged.
Long story short - he should increase the airbag pressure slowly to compensate for the sag and find a happy medium with the ride comfort. I air my firestones up to 80psi with a truck camper in the back that probably weighs around 2100lbs and don't have a problem with the ride. |
Originally Posted by BigF350
(Post 14507080)
Threads merged.
Originally Posted by BigF350
(Post 14507080)
Long story short - he should increase the airbag pressure slowly to compensate for the sag and find a happy medium with the ride comfort.
I looked at the truck this weekend, trying to convince him the SRW blocks would most likely solve the issue. The hauler bed adds over 900 pounds over the stock bed. Plus some tools, a 250+ pound hitch and a 60 gallon aux tank. |
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