air bag question - Ford Powerstroke Diesel Forum
Suspension & Steering Discuss OEM & aftermarket suspension, lifts, air ride suspension, shocks, steering components, etc.

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post #1 of 40 Old 08-26-2012, 02:37 PM Thread Starter
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air bag question

I have a 2002 F250 4x4 PSD and was wondering if you could use air bags to level out the front suspension like a leveling kit would do. I see kits for the front of trucks like the firestone ride rite but i dont know if it supports weight at the stock height or would it actually raise the truck? This a bad idea? If it will work what are the pros and cons? Ive searched internet and cannot find an answer hope someone can help. Thanks
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post #2 of 40 Old 08-26-2012, 04:18 PM
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i am sure it would work with the rite bag, most people want a softer ride. adding the bag in the stock location wouldnt give much travel from the bag, making a stiff ride. the kelderman style lifts work because of increased travel. they allow for the bag inflation and build spacers around such said dimensions

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post #3 of 40 Old 08-26-2012, 11:03 PM
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It would work but that's not what they are designed to do. They are so when you have a heavy load you can level the truck, however I do use mine to lift the truck when I am working under it. The ride will suck if you keep them inflated enough to level the truck.

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post #4 of 40 Old 08-27-2012, 05:43 AM
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Why would the ride suck? I have been considering this for a while and here is what i think.
If you can level the truck by putting a jack under the frame rail and the front tires never leave the ground then it should work fine and ride similar to just having air ride (with some added spring rate when you hit a big bump). You will get a harsh ride if you run a small diameter bag because it requires a lot of psi to lift the front of the truck and there is not much volume for the air to be compressed into thus the pressures will spike high when you hit a bump and thus increase the spring rate to quickly and give a bouncy ride.
By using the airbags to support the trucks weight the springs are no longer doing the work and are basically there to just locate the rearend(or front end for this matter). Location is a bigger issue i think because on my truck there is virtually 2-3 inches of suspension travel before the bump stops hit so putting them in-between the frame and axle would be difficult and mounting them on the outside of the frame rail you start getting into the tire and knuckle of the axle.

On the other hand if your truck takes more lift than the stock suspension will drupe trying to force it down with airbags is going to give you a ride like having the axle bolted to the frame due to the increased pressure just to get the truck to "ride height" now the truck doesn't have enough weight to compress the air bags thus little to no suspension movement.

these are just my opinions If some one has actually tried it and it doesn't work then let me know so I don't waste time building a kit because i think i have a way to do it but don't have time at the moment to work on it (winter project). I think it would be great for snow plow guys as well.

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post #5 of 40 Old 08-27-2012, 09:32 AM
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KELDERMAN AIR SUSPENSION !!!!!!!!!!!!!!! this has already been done. like i said, with the correct sized bag, and spacers giving needed travel, it would be ideal. most wont want the lift height rquired.

04 F-250 CCSB 4X4 6.0L Auto, tweaked by GEARHEAD

follow link to truck for sale
http://www.powerstroke.org/forum/tru...w-80000-a.html
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post #6 of 40 Old 08-27-2012, 04:30 PM Thread Starter
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Ok just curious what does the kelderman kit cost? Does anyone here run air bags front or rear? I was thinking of doing all 4 corners anyway and thought if the front bags would raise vehicle without too harsh of a ride then i could kill 2 birds with one stone.
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post #7 of 40 Old 08-27-2012, 07:41 PM Thread Starter
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Beginning to think maybe il go eith pro comp 2" leveling kit, anyone use this and have pics? Would I need to add blocks to rear?
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post #8 of 40 Old 08-28-2012, 04:12 AM
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full kelderman runs from around $6000-$10,000 !

04 F-250 CCSB 4X4 6.0L Auto, tweaked by GEARHEAD

follow link to truck for sale
http://www.powerstroke.org/forum/tru...w-80000-a.html
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post #9 of 40 Old 08-29-2012, 04:00 PM Thread Starter
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Wow, not ready to spend that much, anyone here have kelderman suspension?
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post #10 of 40 Old 08-31-2012, 12:16 PM
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Is this kind of what your thinking of?
1999-2004 Ford F250/350 2-Stage Front Air Suspension w/ 1 1/2" lift | Kelderman

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