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Old 01-09-2015, 01:26 AM   #21
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I would be interested in Protagonist view on the VB Air Suspension System for a MB 3500 Sprinter Van. Thanks,
Can't help you there. I haven't even seen one installed, so I don't have enough know-how to form an opinion.

Mark your calendars… I actually said "I don't know" for once!
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Old 01-09-2015, 06:01 AM   #22
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I ordered & installed the springs, shocks & sway bars from The Sprinter StoreJust adjusted the koni shocks to softest setting (as suggested on another forum) and have a trip from IL to CALIF in two weeks

Could you provide a link to that forum thread. Secondly, how was the ride with the shocks at their softest?

TIA
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Old 01-09-2015, 06:37 AM   #23
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Check out VB-FullAir Suspension System
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Old 01-09-2015, 06:21 PM   #24
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What's the price range of this setup w/ the air compressor and for a van w/o option C43?
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Old 01-14-2015, 10:30 AM   #25
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I am wondering if any enterprising company will explore Magnetic Active Suspension for the Airstream Interstate. I'm guessing that this technology will fall drastically in price as more companies choose to incorporate it.
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Old 01-14-2015, 11:58 AM   #26
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I wrote Advanced RV yesterday to ask them about the airbag suspension and they said they no longer do them on other lines besides their own. They are apparently too busy and would have to move the generator on the Interstate. Bummer!


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Old 01-14-2015, 05:38 PM   #27
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You might try the Sprinter Store near Portland, OR. The sell and install the competing Glide-Rite air suspension.
http://sprinterstore.com/air_bag_kit.htm
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Old 01-14-2015, 07:03 PM   #28
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You might try the Sprinter Store near Portland, OR. The sell and install the competing Glide-Rite air suspension.
Air Bag Kit
That's a lot cheaper than the VB.

Didn't understand why the installed bags looked like cylinders (sort of like the one that goes inside a coil spring as an assist) and the one in the picture looked more like an air spring.

Since the leaf springs provide the lateral support for the axle, what provides that w/ the bag setup and no springs? I could see the bars that locate the axle fore and aft but not laterally.

Also wondered if it was a DIY project.
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Old 01-15-2015, 09:13 AM   #29
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The cheaper kit is just assist airbag, not a full suspension system. The Glide-Rite on top of that web page is a full suspension system, but you will have to call them for a price that I think is compatible to the VB system. Both are approved by Mercedes and made in Europe.
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Old 01-15-2015, 02:25 PM   #30
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They need to work on their web page as it certainly isn't apparent that there talking two totally different setups.

Even then I don't see what is locating the axle. Called Upscale Automotive and they said that what looks like a sway bar is a track bar that provides lateral location. Inquired to pricing and it will be about $10K () installed w/ mods depending on the pound exchage rate and the generator on the AI is in the way.

Oh and BTW it's not DIY. He said some fab is req'd.
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Old 01-15-2015, 10:11 PM   #31
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They use front leaf spring mount for track bar that locates axle and have air bag between axle and front mount and another air bag at end of track bar. VB system used just two air bags at at the end. Curious why they use four airbags in Glide-rite system compare to VB system that uses just two airbags? Glide-rite system don't have true lateral track bar, they use sway bar to assist with lateral movement. In VB system they do have lateral locating bar that mounts between axle and subframe. But, $10k is too much money.
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Old 01-15-2015, 10:25 PM   #32
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Yeah just $6 for the parts seemed a little much to me. Not sure I would trust a sway bar to provide lateral axle location for a vehicle that weighs over five tons. I also asked if the pressure in each air bag could be adjusted manually for leveling purposes and the answer was no.
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Old 01-27-2015, 03:27 PM   #33
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We just got a price for upgrading shocks....

This is the combo that Koni suggested for the AI:

Koni adjustables on front, and Koni FSD on rear.

They want $2,000 including labor. This seemed super expensive to me. Lew (Lewster) told my husband that this seems about right.


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Old 01-27-2015, 04:28 PM   #34
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I got the same Koni combo installed by Sprinter Store (Upscale Auto) near Portland, OR for $1,310.
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Old 01-27-2015, 04:48 PM   #35
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I got the same Koni combo installed by Sprinter Store (Upscale Auto) near Portland, OR for $1,310.
That was more like what I thought it would be.

Anybody else have thoughts on the price?
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Old 01-27-2015, 05:13 PM   #36
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ALSO....I just spoke with the Sprinter Store.

Our complaint is about the sway in winds, as well as when you drive over a speed bump or a driveway entry at an angle. We have no complaints about the ride otherwise.

With that in mind, the Sprinter Store guy said that, instead of doing new shocks, we'd probably get the best result by adding a "rear spring assist kit" and an upgraded sway bar on the back.

So now, we're thinking we might do this first and see how much it helps.

The fact that the rear spring assist kit would raise our rear up about an inch, is also a good thing, in my opinion (tired of bottoming out!).
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Old 01-27-2015, 05:27 PM   #37
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With that in mind, the Sprinter Store guy said that, instead of doing new shocks, we'd probably get the best result by adding a "rear spring assist kit" and an upgraded sway bar on the back.
Word of warning— If you go with a larger-diameter sway bar than you already have, it will probably rub against the generator enclosure. There really isn't a lot of clearance there.

You can still do it, but you can expect a, "What's that noise?" reaction when you hear it rubbing, and you'll scratch up the generator enclosure something fierce. But it's not like anyone is ever going to see it except when you have the generator pulled for maintenance.
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Old 01-27-2015, 05:48 PM   #38
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Word of warning— If you go with a larger-diameter sway bar than you already have, it will probably rub against the generator enclosure. There really isn't a lot of clearance there.

You can still do it, but you can expect a, "What's that noise?" reaction when you hear it rubbing, and you'll scratch up the generator enclosure something fierce. But it's not like anyone is ever going to see it except when you have the generator pulled for maintenance.
Thanks, Protag. I don't think we want any more noises coming out of the space shuttle, so, might not be a good idea!
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Old 01-27-2015, 05:56 PM   #39
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Be aware that increasing the size of the rear sway bar will reduce understeer. It could go into an oversteer condition if it went too much bigger.
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Old 01-27-2015, 06:31 PM   #40
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Bars need to be matched. I put a rear on my Dodge and had to upsize the front as a result.

I would put KONI shocks on anything I owned were they available. I wouldn't even make it home after vehicle purchase to do so first.
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