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Bolted on bits, factory and aftermarket accessories Discussion of after-market extras: winches, bull bars, tow bars (and Towing), roof racks, snorkels, and other cool stuff

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Old 1 Week Ago
Coolrunning2009 Coolrunning2009 is offline
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Default Caravan pushing my Pajero side to side, will air suspension fix this

Hello All

We have a 2018 Pajero & weíre towing a dual axle 2.8T caravan with 150kg on the ball

At 90km/hr on the highway we get shaking of the car side to side.

Have had caravan wheels balanced & aligned, hasnít stopped the shaking. Caravan manufacturer says itís because of the independent suspension of the Pajero

Will fitting of airbag suspension help with this?

Cheers

Ken
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Old 1 Week Ago
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Despite what a few people will tell you, the Gen 4 Pajero is a popular towing vehicle, and I have a severe doubt that it would be so popular if all the owners are being shaken from side to side by their caravans. I suspect that the cause of your problem is not simply the Pajero's IRS.

Are your quoted figures (2.8T / 150kg) measured figures (i.e. weighbridge) or manufacturer's specification? Is that 2.8T ATM or tare? I don't subscribe to the "10% ballweight" mantra, but a 2.8T van with 150kg ball weight is getting to the light end of the spectrum. To troubleshoot this properly, it would be good to know we're dealing with actual figures. In addition to simple centre of gravity, the actual distribution of weight in the caravan will also affect performance - a lot of weight a long way from the axles is less stable than having that same weight over the axles. Where are your water tanks?

A 150kg ball weight on its own shouldn't bother the Pajero's rear suspension - what else is loading your rear suspension?

Some photos might help - a side shot of your rig loaded and ready to roll, and perhaps an "upskirt" photo of your caravan suspension.
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NT Platinum. DiD Auto with 265/70R17 Toyo MT, Lift, Lockers, Lockup Mate, 3.15 gears, LRA Aux tank, bullbar, winch, lights, lots of touring stuff. Flappy paddles. MMCS is gone!

Project: NJ SWB. 285/75R16 ST Maxx, 2" OME suspension, 2" body lift, ARB 110, 120l tank, bullbar, scratches, no major dents. Fully engineered in SA. NW DiD & auto in place - a long way to go....
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old Jack old Jack is offline
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Agree with NJswb something is not right.

1. Do you use a WDH?
2. What are front and rear ride heights when the caravan is attached, measured from centre of the wheel hubs to the underside of the wheel arch in a vertical line. Do this measurement with and without the WDH connected.
3. What are the front and rear ride heights when the caravan is not connected?

OJ.
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2011 PB Base White Auto, Smartbar, Cooper STMaxx LT235/85R-16,TPMS, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
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Coolrunning2009 Coolrunning2009 is offline
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Default Caravan pushing my Pajero side to side, will air suspension fix this

Thanks for the responses

1) Ball weight has been measured using a ball weight scale

2) 2.8T is ATM & we havenít had a weighbridge check but the van currently weighs 2.6T (scales used to check). The Tare weight is 2.2T (checked by supplier on weigh bridge)

3) We have a Hayman Reese Weight Distribution hitch but thereís no room on a frame for dual cam sway breakers. When WDH is engaged it levels the Pajero where front is 5 mm higher than back

Will do photos when we hook up tomorrow
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Old 1 Week Ago
Bessiejan Bessiejan is offline
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Default Stiffening rear suspension

Hello and I hope the brains here can help. We have a 2018 Pajero which is used to tow a caravan with an ATM of 2800. We experience pitching and yawing of the Pajero when towing. Hayman Reese towbar and WDH installed by ARB. We tow on blacktop only.

The caravan manufacturer recommended getting a sway control system as the independent rear suspension of the car will always cause the movement. We do not have room enough to fit the Hayman Reese dual cam system without e tens Iíve reconfiguration of the a frame on the caravan (again!)

A random person suggested that airbags fitted to the rear suspension would reduce the yawing and pitching.

Has anyone had any experience with the problem we have and how did you fix it without selling the car 😸

Jan
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Hello Jan,

Are you related to Ken?

Quote:
Originally Posted by Coolrunning2009 View Post
Hello All

We have a 2018 Pajero & weíre towing a dual axle 2.8T caravan with 150kg on the ball

At 90km/hr on the highway we get shaking of the car side to side.

Have had caravan wheels balanced & aligned, hasnít stopped the shaking. Caravan manufacturer says itís because of the independent suspension of the Pajero

Will fitting of airbag suspension help with this?

Cheers

Ken
__________________
NT Platinum. DiD Auto with 265/70R17 Toyo MT, Lift, Lockers, Lockup Mate, 3.15 gears, LRA Aux tank, bullbar, winch, lights, lots of touring stuff. Flappy paddles. MMCS is gone!

Project: NJ SWB. 285/75R16 ST Maxx, 2" OME suspension, 2" body lift, ARB 110, 120l tank, bullbar, scratches, no major dents. Fully engineered in SA. NW DiD & auto in place - a long way to go....
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Old 1 Week Ago
Bessiejan Bessiejan is offline
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Yes I am.

I did not know he had posted here, but still no response to our similar questions. ����
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Welcome to Jan & Ken.

Rather than have two threads running for the same issue, I've merged them into one. I've left it in the "Bolted on Bits" sub-forum, as it's more likely to reach a wider audience here - the NX, while being the latest iteration of the Gen 4, has roots tracing back to 2000, so we may have many members with relevant experience who won't necessarily look in the NX sub-forum.

As previously posted, it's unlikely the Pajero would be as popular as a towing vehicle if its rear suspension was inherently susceptible to sway - or we'd all know a lot more about the problem. I don't believe your caravan manufacturer is correct to blame the vehicle, and we'd like to help you get to the bottom of the issue. The previously discussed photos would be a good place to start, along with some more information about weight distribution. There is more to caravan stability than simple "centre of gravity" - having the bulk of the weight closer to the axles is better for stability than having two big lumps at either end of the "see-saw".
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NT Platinum. DiD Auto with 265/70R17 Toyo MT, Lift, Lockers, Lockup Mate, 3.15 gears, LRA Aux tank, bullbar, winch, lights, lots of touring stuff. Flappy paddles. MMCS is gone!

Project: NJ SWB. 285/75R16 ST Maxx, 2" OME suspension, 2" body lift, ARB 110, 120l tank, bullbar, scratches, no major dents. Fully engineered in SA. NW DiD & auto in place - a long way to go....
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Hi Ken and Jan,


As "Njswb" has stated, we cannot offer accurate assistance without accurate information.
We ask specific questions for specific reasons what will become clear as the information is processed. Your problem is most likely caused by numerous factors and just spending $500 on fitting a set of airbags is unlikely to fix your handling problem and could be a waste of money.
Most business are in the business of selling something, even if it is not what you really need. We see this all the time, where forum members spend their hard earned cash, trusting a sales person form XYZ only to still have the problem so they go to the next expert at WXY only to be told and sold something different that still does not fix the problem.


Regards,


OJ.
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2011 PB Base White Auto, Smartbar, Cooper STMaxx LT235/85R-16,TPMS, HR TB, 3 x Bushskinz, front +40mm Dobinson , rear +50mm EHDVR Lovells, Dobinson MT struts and shockers, Peddars 5899 cone springs, Windcheater rack, GME UHF, Custom alloy drawer system inc. 30lt Engel & 2 x 30 AH LiFePo batteries + elec controls, Tailgate hi-lift/long struts, Nightbreaker +130LB & Phillips +100 HB, Lightforce 20" single row driving beam LED lightbar, Scanguage II.
MM4x4 Auto Mate, Serial No 1 .
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Thanks OJ.

Jan & Ken, have you read this article on ExplorOz?

https://www.exploroz.com/Vehicle/Car..._Dynamics.aspx

The article's author is well known across the industry, and has been known to attract his share of controversy - we prefer not to post his name on this forum. Personally, I'm not one of his biggest fans, but I believe the linked article is a good introduction to caravan stability. Hopefully that article may help you to understand why we're asking these questions.

Ultimately, stiffer rear suspension may be your answer - but we'd prefer to confirm that there isn't an underlying issue that we can address first. And (without knowing the brand of your caravan) you can't necessarily trust that the manufacturer has designed your caravan well.
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NT Platinum. DiD Auto with 265/70R17 Toyo MT, Lift, Lockers, Lockup Mate, 3.15 gears, LRA Aux tank, bullbar, winch, lights, lots of touring stuff. Flappy paddles. MMCS is gone!

Project: NJ SWB. 285/75R16 ST Maxx, 2" OME suspension, 2" body lift, ARB 110, 120l tank, bullbar, scratches, no major dents. Fully engineered in SA. NW DiD & auto in place - a long way to go....
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