RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 04-17-2012, 08:44 PM   #1
Thor Owners Club
Join Date: Nov 2011
Posts: 71
Air Suspension

I have a Thor 37 ft Challenger on a Ford F-53 chassie. I would like to put air suspension on it. I've been looking into the Kelderman system, does anyone know of another system that would have the same results. I'm looking for a better ride.
Thanks for your help
Saturn Vue
Pressor Pro
GJHD is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 04-18-2012, 08:41 PM   #2
Senior Member
Workhorse Chassis Owner
Join Date: May 2006
Location: Holland, MI
Posts: 481
If you go to the RV.net class A forum there are 2 on there who have added the Kelderman system recently. One is Holstein13 and I think the other is Goldencrazy. You can find them by doing a search for Kelderman inthe search panel. Both had F53 chassis.
1999 Damon Challenger 310 Ford chassis
bsinmich is offline   Reply With Quote
Old 04-18-2012, 08:51 PM   #3
Registered User

Monaco Owners Club
Join Date: May 2009
Posts: 3,198
I actually looked at and read the directions for those...
The system makes no sense at all.

Regardless, anything that ADDS an airbag to the stock original leaf spring will INCREASE the spring rate, and make the ride rougher, always.

If you want more ride ht, have a shop re-arch the stock springs, this will increase the hieght without increasing the spring rate.

If you want a smoother ride, and/or an adjustable suspension, use a system that uses a different, softer leaf spring, or removes leafs from the factory spring to reduce the spring rate, and then uses an air bag to adjust the ht and ride.

again, adding an air bag to the factory leaf can add rt ht at the expense of a stiffer ride, but nothing else.
JimM68 is offline   Reply With Quote
Old 04-19-2012, 05:29 AM   #4
Senior Member
AirLift's Avatar
Official iRV2 Sponsor
Join Date: Aug 2010
Posts: 127
The rv systems from kelderman may be different but I thought many of them replaced the leaf springs or at least changed the attach points.

Some of the ones I have seen add an airbag at the rear between the leaf spring hanger and the frame. This style could help ride quality in a couple of different ways.

If the application for your chassis is just a matter of placing a bag between the axle and frame, it will make your suspension stiffer. However, this can improve ride quality even though the suspension is tighter. If your current springs are too soft it will make the rear of the vehicle feel bouncy and un-controllable. Even the simplest system can add ride comfort by bringing control back to a suspension. Higher spring rate or not.
AirLift is offline   Reply With Quote
Old 04-19-2012, 07:30 AM   #5
Thor Owners Club
Join Date: Nov 2011
Posts: 71
The Kelderman does replace the stock springs with a softer spring also replaces the shocks with Monroe shocks.

Thanks for your input, I have some serious thinking to do before I spend $$$
GJHD is offline   Reply With Quote


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

All times are GMT -6. The time now is 09:33 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.