Good Sam Club Open Roads Forum: Truck Campers: Need Suspension Mods
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Truck Campers

Open Roads Forum  >  Truck Campers

 > Need Suspension Mods

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 6  
Prev  |  Next
Bedlam

PNW

Moderator

Joined: 06/13/2012

View Profile






Posted: 09/17/20 08:50am Link  |  Quote  |  Print  |  Notify Moderator

My 2005 F250 was at 7000 lbs on the rear axle with a 2012 Arctic Fox 811. Adding my tongue weight of an 8000 lb trailer made it 8000 lbs on the rear of the truck. To ride level and safe at that weight, I added the following:

Vision Heavy Hauler 81 rims rated 4500 lbs each
245/70R19.5 LRH PR16 tires rated over 5000 lbs each
Ford OEM rear stabilizer bar
Upper Torklift StableLoad pads
Lower Torklift StableLoad wedges
Firestone Ride Rite airbags rated at 5000 lbs and plumbed individually
Rancho RS9000XL adjustable shocks

This combination crossed the Rockies on three round trips and was solid for 30,000 miles before I upgraded to my current truck and camper. It handled the Midwest winds well and had no problems with windy mountain roads.

If had to this again, I would not hesitate but would probably replace the entire rear spring pack rather than build it up with with bags and StableLoads.


Chevy Sonic 1.8-Honda Passport C70B-Host Mammoth 11.5-Interstate Car Carrier 20-Joyner SandViper 250-Kawasaki Concours ZG1000-Paros 8' flatbed-Pelican Decker DLX 8.75-Ram 5500 HD-Tank Urban Touring 150SE-VW TransBuggy 1200


cheftim

Bourne, MA

Full Member

Joined: 09/30/2003

View Profile


Offline
Posted: 09/20/20 02:52pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all of the feedback from you all.

I'll be ready for new tires in the spring so I'll be upgrading both the wheels and tires to be better suited to the weight I'm carrying. Decision now is stay with 18" or go with 19.5". Haven't found a compelling reason for either one yet.

I'll also be adding a Superspring. Looks like I'll have to get rid of the air bags altogether as it looks like they can't coexist.

Heading up to one of my kid's house next week and will use the camper for social distancing. There's a Cat scale nearby and will jump on with all tanks empty for another reading.


2017 F-350 LWB
2018 Arctic Fox 990
2017 Sailfish 290 w/Twin 300 Verados


noteven

Turtle Island

Senior Member

Joined: 02/13/2011

View Profile



Posted: 09/20/20 03:21pm Link  |  Quote  |  Print  |  Notify Moderator

cheftim wrote:

Buzzcut1,

Yeah, tires are rated at 3415 each so that will need to be upgraded. Thanks for that feedback.

Anyone have E or F tire suggestions that are decent on the highway and are around 4k load range?

I'm leaning towards Supersprings as well.


Take a look at Nitto Dura Grappler tires.

You need tires that are load index 128 ish to get 4000lbs

I had good service from a set of Firestone H somethings, 18's rated at 3920(?)lbs I think. They were Oh My God new takeoff stock OEM tires from a new Ram truck. $600 for 4 and ran them doing lots of towing and hauling for 2 years...then they went on a pilot truck for another 25,000 - but they don't carry much weight.

billtex

RI

Senior Member

Joined: 07/20/2004

View Profile



Good Sam RV Club Member

Offline
Posted: 09/20/20 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

cheftim wrote:

Thanks for all of the feedback from you all.

I'll be ready for new tires in the spring so I'll be upgrading both the wheels and tires to be better suited to the weight I'm carrying. Decision now is stay with 18" or go with 19.5". Haven't found a compelling reason for either one yet.

I'll also be adding a Superspring. Looks like I'll have to get rid of the air bags altogether as it looks like they can't coexist.

Heading up to one of my kid's house next week and will use the camper for social distancing. There's a Cat scale nearby and will jump on with all tanks empty for another reading.


I ran SS’s and bags on my last 3/4 ton truck.

Not sure The advantage of adding SS’s to a 1 ton. Why not take full advantage of the OE spring pack?


2020 F350 CC LB
Eagle Cap 850
25'Airstream Excella
"Good People Drink Good Beer"-Hunter S Thompson

Bert the Welder

Van. Island

Senior Member

Joined: 03/11/2009

View Profile


Offline
Posted: 09/20/20 06:16pm Link  |  Quote  |  Print  |  Notify Moderator

noteven wrote:

cheftim wrote:

Buzzcut1,

Yeah, tires are rated at 3415 each so that will need to be upgraded. Thanks for that feedback.

Anyone have E or F tire suggestions that are decent on the highway and are around 4k load range?

I'm leaning towards Supersprings as well.


Take a look at Nitto Dura Grappler tires.


Those look promising. Had Terra Grap's on my current truck. They were just OK. found they wore faster then others and rain grip wasn't as good. Those ones look like they'd be a nice middle ground tread for forest roads and pavement.


"> 1998 GMC 2500, 10.5 Okanagan, My better/smarter half, George and Finnegan(APBT), all I need.


TriBeard

USA

New Member

Joined: 08/21/2019

View Profile


Offline
Posted: 09/20/20 07:42pm Link  |  Quote  |  Print  |  Notify Moderator

You really should try and get to another scale. Those weights seem off to me, either that or mine are just crazy. I’ve weighed my truck and camper twice (af811 and 2018 ram 3500 srw) and I’m at 9k loaded on the rear axle. I’m heavier than everyone else online seems to be and I’m not sure why, but you may be as well. I just upgraded to 19.5 wheels and tires to handle the load and they’re a huge improvement for stability even when just in the camper when the truck is parked.

Check your compression on your airbags when the camper is loaded. Mine was less than 3 inches between the top and bottom metal disks for the bags and so I’m having to move up to the 7500xl series to handle the load. I have stableloads also which help but didn’t solve any of my issues on their own. I can only have the lowers cause rams don’t have upper overloads so if you have those too maybe they’re helping, not sure.

AFs are heavy and I honestly don’t know how someone can carry one safely and be under fire ratings and whatnot without a dually or 19.5s. Not saying that it’s impossible or that people don’t have combinations that work, but it hasn’t been my experience and I have what is supposed to be one of if not their lightest units.

* This post was edited 09/20/20 07:52pm by TriBeard *

Bedlam

PNW

Moderator

Joined: 06/13/2012

View Profile






Posted: 09/20/20 08:48pm Link  |  Quote  |  Print  |  Notify Moderator

You may be able to SumoSprings or Timbrens in parallel with your bags if you do not want to change out the spring pack.

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Online
Posted: 09/21/20 12:27am Link  |  Quote  |  Print  |  Notify Moderator

BigfootBill wrote:

billtex wrote:

towpro wrote:

it sounds like you must have over load springs, that work as the truck body drops the springs come into contact with the overload spring perches on the frame.

Your not loaded enough to make them come into play full time so they BANG every time the springs hit them
As you crank up the air bags they you are raising the back so they never hit again.


This.

Ditch the airbags and add lower Stableloads . You’ll be all set.


I'm not convinced that this is true with a 4000 pound camper. The lower pressures he was experimenting with should have allowed the weight to compress the suspension enough to get full engagement out of the various parts of his OEM suspension.

I was having issues and called airlift who makes my bags and tech support recommended running up to 95 psi. I find I like the ride around 75 psi so consider trying out higher pressures. Air it up and see how high you can go before those extensions you talk about lose contact and you may find that you can go higher pressure and still be comfortable with the suspension.

In addition to raising the vehicle as the pressure increases, the "firmness" also increases. It's a dance between the vehicle springs and the airbags and the goal is to find the sweet spot where they work together the way you want.


This is a very interesting statement and I’d like to try it. Guess I figured the more air the bouncier.
But what I don’t understand is how do you drove around with the rear end up in the air?
Unless you’re really heavy on a lighter duty truck.
I’ve got 4500lbs ish on an old 2500 and 60 psi levels it , full. 70 is about stock ride height. 90-100psi would look like it put a lift kit in the back.
Like to know more about your setup bill.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Online
Posted: 09/21/20 12:29am Link  |  Quote  |  Print  |  Notify Moderator

Tri-beard. If you have 5500lbs ish in a short bed camper, you should not let the wife pack it.
Are you carrying rock collections like some of the folks here?

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Online
Posted: 09/21/20 12:34am Link  |  Quote  |  Print  |  Notify Moderator

cheftim wrote:

Buzzcut1,

Yeah, tires are rated at 3415 each so that will need to be upgraded. Thanks for that feedback.

Anyone have E or F tire suggestions that are decent on the highway and are around 4k load range?

I'm leaning towards Supersprings as well.


Any of them. You need to be in the larger size tires to get the upper weight ratings though.
Sounds crazy, but I feel the Firestone MTs, which I’ve siped, are lasting longer than the last 2 sets, 1 of which was Toyo MTs that are known for good tread life.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 6  
Prev  |  Next

Open Roads Forum  >  Truck Campers

 > Need Suspension Mods
Search:   Advanced Search

Search only in Truck Campers


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.