Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-17-2014, 12:39 PM   #1
2 Rivet Member
 
gambita's Avatar
 
2015 Interstate Ext. Coach
Framingham , Massachusetts
Join Date: Aug 2014
Posts: 60
2015 Interstate suspension upgrade

I wish to decrease sway and also to improve rear passenger ride experience.
Which one would you recommend?
Pros and cons ?
Thanks a lot Fellow AirstreamersClick image for larger version

Name:	ImageUploadedByAirstream Forums1413567574.540089.jpg
Views:	351
Size:	1.13 MB
ID:	224558
__________________

__________________
gambita is offline   Reply With Quote
Old 10-17-2014, 07:53 PM   #2
Newbie
 
joemikeb's Avatar
 
2013 Interstate Coach
Fort Worth , Texas
Join Date: May 2013
Posts: 289
The Sprinter Store has Koni shocks and struts will do wonders for improving handling and resistance to crosswinds but not so much on rear seat ride. They used to offer an air suspension kit but apparently it is discontinued. They currently offer a set of rear springs that supposedly make the 3500 ride like a 2500 passenger van but I haven't tried it — yet.
__________________

__________________
Make errors otherwise the Great Spirit realizes
you have finished your purpose on earth.

Navajo saying
joemikeb is offline   Reply With Quote
Old 10-17-2014, 08:56 PM   #3
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,306
There are limits to how far you can tweak the suspension. The Koni shocks/struts referred to by joemikeb are adjustable, which helps. But you're still dealing with four tons or so of fine German steel and Airstream coachwork, so you shouldn't ever expect it to ride like a passenger car. You'll have to settle for making it ride more like a van and less like a school bus. I've got my Konis adjusted to dampen the road force more quickly, cutting down on sway and bounce, but the trade-off is that each bump or pothole is felt more harshly.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 10-17-2014, 10:44 PM   #4
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,262
I was at Upscale Automotive near Portland this summer for routine service and new Koni shocks all around. The new shocks have reduced the bounce in my Sprinter and made the ride more stable. But the ride is still rough, that's why I'm now thinking tire pressure as an inexpensive option.

There are new multi-leaf rear springs that Upscale (Sprinter Store) first mentioned on the Sprinter Forum back in August in this thread.
http://www.sprinter-source.com/forum...d.php?p=320915

I was ready to also have these new springs when I was at Upscale in September, but hey were out of stock. For now I'm glad I saved the $1,700 plus installation for these springs.

From what I've read the only proven way to really smooth out the ride on 3500 Sprinters is to upgrade to a full air-ride rear suspension. There are two versions on the market approved by Mercedes. One is the VB Air Suspension now being installed by Advanced RV. The other is the Glide Rite Air Bag Suspension sold and installed by The Sprinter Store.

Both these air suspensions are pricey, at least $10,000 installed. Several Sprinter owners on this and other forums have reviewed these air suspensions and rave about the smooth ride. So if you want to spend that much they are the best option. Here are a couple of recent discussions on both suspensions.
http://www.sprinter-source.com/forum...d.php?p=326236

http://www.sprinter-source.com/forum...ad.php?t=31472

http://www.sprinter-source.com/forum...d.php?p=297422

Hope this is useful.
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 10-17-2014, 11:03 PM   #5
2 Rivet Member
 
gambita's Avatar
 
2015 Interstate Ext. Coach
Framingham , Massachusetts
Join Date: Aug 2014
Posts: 60
Thanks
__________________
gambita is offline   Reply With Quote
Old 10-18-2014, 04:09 AM   #6
Rivet Master
 
Currently Looking...
Nowhere , Somewhere
Join Date: Jul 2005
Posts: 6,417
Blog Entries: 2
Hard to make a fully loaded truck ride like a car. But those upgrades do help. Be careful with tire pressures, you may be close yo max weight. Jim
__________________
avionstream is offline   Reply With Quote
Old 10-19-2014, 02:52 PM   #7
Newbie
 
joemikeb's Avatar
 
2013 Interstate Coach
Fort Worth , Texas
Join Date: May 2013
Posts: 289
Quote:
Originally Posted by Boxster1971 View Post
There are new multi-leaf rear springs that Upscale (Sprinter Store) first mentioned on the Sprinter Forum back in August in this thread.
http://www.sprinter-source.com/forum...d.php?p=320915

I was ready to also have these new springs when I was at Upscale in September, but hey were out of stock. For now I'm glad I saved the $1,700 plus installation for these springs.
When you were at Upscale Automotive, did they offer to install the springs on your AI and did they quote an installation price? Their website says the springs are specifically designed only for the Navion and goes to lengths to extoll the potential difficulties of installation on other RVs.

By-the-way on that same site the full Air Spring suspension is listed as discontinued. It was too pricey for my wallet, but I was holding out hope that I would strike a bonanza.
__________________
Make errors otherwise the Great Spirit realizes
you have finished your purpose on earth.

Navajo saying
joemikeb is offline   Reply With Quote
Old 10-19-2014, 06:42 PM   #8
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,262
Quote:
Originally Posted by joemikeb View Post
When you were at Upscale Automotive, did they offer to install the springs on your AI and did they quote an installation price? Their website says the springs are specifically designed only for the Navion and goes to lengths to extoll the potential difficulties of installation on other RVs.



By-the-way on that same site the full Air Spring suspension is listed as discontinued. It was too pricey for my wallet, but I was holding out hope that I would strike a bonanza.

I never discussed installation because they were out of stock. You are looking at the wrong items on the Sprinter Store web site. The Navion item is a Spring assist kit at $700. The springs I'm referring to are specifically for Sprinter 3500 van and cost $1700. Here is the text from Sprinter Store:

"Rear Spring Pack for the 3500 Vans:
We now have a new rear spring pack designed specifically for the NCV3 3500 vans. Many airport transporter, hotel transporter and Class B RV owners have complained about the stiff ride and people literally being launched when riding in the rear of the vans. Our new design is a multi leaf spring pack that creates a passenger van ride. In fact, reports are that it is even better than the 2500 passenger van! Just like our other spring kits, this one is designed specifically for the NCV3 3500 vans and fits no other vehicle. The steel quality, arching and spring temper of this pack emulates what MB would produce. The overall ride and handling remains the same until you hit bumps, potholes, etc. Then the multi leaf design kicks in and the harshness from bumps and potholes is significantly reduced. One of our test mule customers says more than significantly reduced but we will leave it at significantly reduced. The new pack will raise the rear of the van about .50 to 1.0 depending the weight you are carrying.

Installation on a normal van is simple, remove the factory spring pack and install our new pack using the longer u-bolts that are provided. If you have a Class B RV, then installation can be anywhere from a challenge to a very big challenge but the up-grade is worth it. The challenge is access to the shackle bushing bolts. If you have clear access to them, then you are good to go. If not, then you are introduced to the challenge! Cut bolts to remove and install from the opposite direction, begin removing tanks or whatever other means is needed for the install.

07 and Newer 3500 Cargo and Passenger Van: $1699.95 plus shipping"

The More expensive Glide Rite Air Bag Suspension System is still listed as available. Only the air bag kits have been discontinued. I've found that the Sprinter Store web site is sometimes out of date so it is always best to call them and get the facts on what is available.


- - Mike
2013 Lounge EXT on 2012 Sprinter
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 10-25-2014, 07:30 PM   #9
Trying to Retire
 
MILATV's Avatar
 
Decatur , Illinois
Join Date: Jul 2013
Posts: 342
Images: 7
I ordered & installed the springs, shocks & sway bars from The Sprinter Store. HUGE difference on rock & roll, and all the buffeting when following the big rigs. Rear seat still rides like a truck. Just adjusted the koni shocks to softest setting (as suggested on another forum) and have a trip from IL to CALIF in two weeks; we'll see if wife chooses to sleep in back or her front seat on the way out.

$10,000 for airbag suspension sounds crazy expensive - but if I do more than 3 cross country trips per year I may have to go with it to get the most use out of the rear seating.
__________________
Mike
- - - - - - - - - - - - - - - - - -
If you work until you have everything you 'WANT' - it will probably be too late to enjoy it.
Live in the Moment and enjoy today.
MILATV is offline   Reply With Quote
Old 10-25-2014, 08:22 PM   #10
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
So the ride doesn't emulate a 2500 or better?
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 10-25-2014, 09:22 PM   #11
Trying to Retire
 
MILATV's Avatar
 
Decatur , Illinois
Join Date: Jul 2013
Posts: 342
Images: 7
Not sure how a 2500 rides, but the back is really unbearable at 55mph on the IL State roads. Interstate is better but I still feel every seam in the concrete as I go down the road. In town isn't such a big deal because I'm not hitting bumps every 15 seconds like I do at highway speeds.
__________________
Mike
- - - - - - - - - - - - - - - - - -
If you work until you have everything you 'WANT' - it will probably be too late to enjoy it.
Live in the Moment and enjoy today.
MILATV is offline   Reply With Quote
Old 10-25-2014, 09:42 PM   #12
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
I use a 2011 2500 Sprinter as my service van. Just turned 100,000 miles and recently got the Sprinter Store Koni and new spring pack upgrades done while I was in OR for the summer.

My van is almost always at max GVW, and I also have a set of air begs on the rear to eliminate rear end sag. The new springs and Konis have done wonders for the handling of the van at max. weight. i also replaced the anemic rear sway bar last year with a much heavier model. That helped quite a bit too.

I would definitely say that my ride now is anything BUT soft, with all of the enhancements and the Konis set to maximum. But then, I'm not smoothing the ride for any passengers....just the tools and equipment that I carry....and they all told me that they don't really care about the ride.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 10-25-2014, 11:07 PM   #13
3 Rivet Member
 
Jeff64's Avatar
 
2014 Interstate Ext. Coach
Springfield , Missouri
Join Date: Aug 2013
Posts: 113
Images: 1
Quote:
Originally Posted by MILATV View Post
I ordered & installed the springs, shocks & sway bars from The Sprinter Store. HUGE difference on rock & roll, and all the buffeting when following the big rigs. Rear seat still rides like a truck. Just adjusted the koni shocks to softest setting (as suggested on another forum) and have a trip from IL to CALIF in two weeks; we'll see if wife chooses to sleep in back or her front seat on the way out.

$10,000 for airbag suspension sounds crazy expensive - but if I do more than 3 cross country trips per year I may have to go with it to get the most use out of the rear seating.
Did you install the spring assist kit (which is basically an overload spring for each side) or did you install the complete new leaf spring Kit?
__________________
Jeff64 is offline   Reply With Quote
Old 10-25-2014, 11:28 PM   #14
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Quote:
Originally Posted by MILATV View Post
Not sure how a 2500 rides, but the back is really unbearable at 55mph on the IL State roads. Interstate is better but I still feel every seam in the concrete as I go down the road. In town isn't such a big deal because I'm not hitting bumps every 15 seconds like I do at highway speeds.
I was just going by what the Sprinter store said in the part that you quoted in your previous post. But then I don't know if you installed the complete spring package that they were referring to. I am just looking for something that will reduce the rear Lounge from launching people when hitting a bump.
__________________

__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2015 MOUNTAIN AIR Rally April 17-20 2015 shermantic Forum Rallies & Meet Ups 2 01-13-2015 08:43 AM
Trigger Pulled! 2015 Interstate Ordered Whoo Hoo! Ron_CA Sprinter and B-van Forum 64 06-09-2014 04:53 PM
2015 Interstate Ron_CA Sprinter and B-van Forum 14 03-04-2014 07:17 PM
Suspension Upgrade Ripple Sprinter and B-van Forum 4 08-14-2013 04:53 PM
Noob Q?: suspension upgrade or not? Freeheel On The Road... 17 02-25-2009 06:38 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.