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Old 08-30-2016, 07:36 AM   #1
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Passing trucks causing sway

I'm looking for a few suggestions from Team FR as to what the best first steps may be to reduce the sway caused by passing trucks and buses. I've got a 2016 3011DS with 2500 miles and a recent alignment that added 2.25 degrees of caster. My rig has a factory sway bar installed (or was that added by FR?) but none on the front end. (See attached pics). There are a number of things that might address the issue but I'd like to hear some feedback from people who have already been through this before I start making improvements.

Thanks

RVr
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Old 08-30-2016, 09:11 AM   #2
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I don't think you can totally eliminate that. (unless you buy a 30,000 lb bus)
I have done about everything I can to help with wander and sway and when a rig passes now on the left, I watch my mirror, steer into it and then back after about 2 or 3 seconds.
Keeps me straight.
When I am caught daydreaming and miss that wall coming at me is when I am slightly startled.

The Roadmaster Reflex or Steersafe centering stabilizer helps a little with this issue also.
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Old 08-30-2016, 09:20 AM   #3
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Myself and at least one other person on the forum have made some significant modifications to our units.

#1 - Roadmaster Reflex Steering Stabilizer
#2 - Blue Ox rear sway bar
#3 - Blue Ox trac bar

These made significant changes in how my unit reacts to other vehicles. I don't have the sway when 18 wheelers or other big rigs pass, don't saw on the wheel going down straight roads and it stays flatter and I feel more in control around corners and curves. Numbers #2 & #3 did a LOT to help that.
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Old 08-30-2016, 09:40 AM   #4
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Henderson rear trac bar would probably make the biggest difference for passing 18 wheelers.(or another make, that's just what I have) safe t plus and Bilstein shocks.
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Old 08-30-2016, 09:43 AM   #5
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Motorhome sway while being passed by large trucks is typical and something you get used to. I think I unconsciously apply corrective steering input automatically now without even thinking about it.
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Old 08-30-2016, 10:35 AM   #6
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NewRVer, that big box sitting on the frame is pushed laterally away (on those long leaf springs) and also the top leans away, from that big wall of air referenced above. Rear trac bar helps fight one and a beefier rear sway bar the other. Beefier front sway helps as well. Steering stabilizer assists holding the wheel in one spot and lastly, better shocks all around. All of that helps and makes it way more manageable rolling down the road, but it's still a big box that the wind will push against. If you have the $ and/or the DIY skills, it is worth doing.
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Old 08-30-2016, 10:44 AM   #7
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I realized a long, long time ago that when you're driving a house on a truck chassis its just not going to be the same as driving a minivan.
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Old 08-30-2016, 10:44 AM   #8
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Quote:
Originally Posted by Gidyupgo View Post
NewRVer, that big box sitting on the frame is pushed laterally away (on those long leaf springs) and also the top leans away, from that big wall of air referenced above. Rear trac bar helps fight one and a beefier rear sway bar the other. Beefier front sway helps as well. Steering stabilizer assists holding the wheel in one spot and lastly, better shocks all around. All of that helps and makes it way more manageable rolling down the road, but it's still a big box that the wind will push against. If you have the $ and/or the DIY skills, it is worth doing.
Yeah... what he said!
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Old 08-30-2016, 11:10 AM   #9
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Originally Posted by DaGrinch View Post
Myself and at least one other person on the forum have made some significant modifications to our units.

#1 - Roadmaster Reflex Steering Stabilizer
#2 - Blue Ox rear sway bar
#3 - Blue Ox trac bar

These made significant changes in how my unit reacts to other vehicles. I don't have the sway when 18 wheelers or other big rigs pass, don't saw on the wheel going down straight roads and it stays flatter and I feel more in control around corners and curves. Numbers #2 & #3 did a LOT to help that.
DaG,

Since you have the sister to my 3011DS Forester it may be good to compare notes with what you have done relative to what I might need to do.

1) I find it interesting that you installed a Blue Ox rear sway bar. Did your unit come with a sway bar installed and you replaced it with a Blue Ox? Or did it not have one when delivered? Mine came with a rear sway bar installed.

2) I was actually looking at a Blue OX Trac bar but on the website it seemed to indicate that it may not work with E450's that have air bags??? Since my unit came delivered with the Ride-Rite air bags , that may or may not preclude me from using Blue Ox.

3) I was thinking about a steering stabilizer up front to provide some protection against blow outs and to help keep the vehicle centered. I'm curious though if in doing that you might actually negate the need for a front stabilizer or trac bar.

I should probably note that I will be operating most of the time close to the 14500 GVWR limit whereas your model may be a little lighter.
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Old 08-30-2016, 11:28 AM   #10
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Originally Posted by newRVer View Post
DaG,

Since you have the sister to my 3011DS Forester it may be good to compare notes with what you have done relative to what I might need to do.

1) I find it interesting that you installed a Blue Ox rear sway bar. Did your unit come with a sway bar installed and you replaced it with a Blue Ox? Or did it not have one when delivered? Mine came with a rear sway bar installed.

2) I was actually looking at a Blue OX Trac bar but on the website it seemed to indicate that it may not work with E450's that have air bags??? Since my unit came delivered with the Ride-Rite air bags , that may or may not preclude me from using Blue Ox.

3) I was thinking about a steering stabilizer up front to provide some protection against blow outs and to help keep the vehicle centered. I'm curious though if in doing that you might actually negate the need for a front stabilizer or trac bar.

I should probably note that I will be operating most of the time close to the 14500 GVWR limit whereas your model may be a little lighter.
newRVer,

#1 - Yes, it came with a sway bar. The Blue Ox is thicker and heavier.


#2 - No problem installing the Trac Bar. Sorry, no picture.

#3 - No Idea. I installed this.....


I have no idea on the weight - I do plan to weigh it someday soon.

Maybe Gidyupgo might chime in, he's done the same mods, maybe more.

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Old 08-30-2016, 12:28 PM   #11
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I'd be shocked if you don't have a factory front sway bar, look again!
I think I see it in your second picture.
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Old 08-30-2016, 01:37 PM   #12
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put Roadmaster steering stabilizer on my 2013 Sunseeker 3120DS,did wonders for drift.
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Old 08-30-2016, 01:51 PM   #13
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Sway

Proper tire pressure 75-80, proper air bag pressure 70-80 psi for me,alignment, blue ox rear trac bar, Roadmaster reflex steering stabilizer. Usually run max speed on all roads. Handles very good now compared to what it did. 2015 3050s
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Old 08-30-2016, 02:00 PM   #14
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X2....

BlueOx sway system
Safe T Plus steering
CHF
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Old 08-30-2016, 02:04 PM   #15
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Hello my friends. You may not realize it but our big motor homes have the same effect on the big rigs pulling dry boxes and reefers.
Kind regards, Al
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Old 08-30-2016, 02:49 PM   #16
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CAF (cheap ass fix) did the most for my Encounter 36BH...wish I had done it before steering stabilizer and rear trac bar...you will have to search for details but on my chassis it involved changing the tension on the existing sway bars
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Old 08-30-2016, 03:28 PM   #17
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I have sway bars front and rear and good shocks but that truck is pushing a lot of air in front of it so it still wants to push me out of the way. Just have to stay alert and get ready.
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Old 08-30-2016, 03:35 PM   #18
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Sure grinch. NewRver, we are 14200 truck with toad on a dolly, 19300 everything sitting on the CAT scale loaded like we roll.
Our rig;
All Amazon. 2017 Sunseeker 3010 class C. Roadmaster RSSC Reflex steering stabilzer, $165: Blue Ox TT2450 Tiger Trac Ford E450 Trac Bar $525: Blue Ox TH7180 rear sway bar for E450 $325. Still to do; front sway bar and Hellwig helper springs on the back. All this bolts on in one day if you have the tools. A second pair of hands helps.
Trac bar.. mounts kinda like this.
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Old 08-30-2016, 03:39 PM   #19
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Quote:
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I'd be shocked if you don't have a factory front sway bar, look again!
I think I see it in your second picture.
No sway bar on the front that I see in the 2nd picture.
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Old 08-30-2016, 04:21 PM   #20
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No sway bar on the front that I see in the 2nd picture.
I was thinking it may be where that tag is attached too, but again I doubt it doesn't have one.
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