Pajero 4WD Club of Victoria Public Forum Pajero 4WD Club of Victoria Public Forum

Go Back   Pajero 4WD Club of Victoria Public Forum > General Information > Techniques

Techniques Winching - Recoveries - Chainsaw Safety - Proper aproach to 4wding etc

Reply
 
Thread Tools Display Modes
  #11  
Old 30-08-16
Wicks747 Wicks747 is offline
Member
 
Join Date: Oct 2014
Location: Alice Springs
Posts: 204
Default

Dragging this topic back to the top but I saw this video that depicts what old jack is describing very well. Well more the effects on how a trailer is loaded and what effect that has on the tow vechiles handling. But still worth a watch. https://www.facebook.com/63298759684...3177227491383/
__________________
Sold 2004 PA Challenger
Current 2010 XLT Ford Ranger. TJM winch bar, ARB rear bar, Gme uhf, Goodyear Wranglers, dual battery, light force blitz 240s, hard korr lightbar, bushskinz bash plates. Helical torque lock lsd.
Reply With Quote
  #12  
Old 01-09-16
Hill Hill is offline
Valued Member
 
Join Date: Sep 2007
Location: Adelaide
Posts: 755
Default

Old Jack

Stumbled across this excel spreadsheet on caravan forum which thought may prove useful.

Works to calculate impact of ball weight on front and rear axles. Allows input for wheelbase etc.

Reference: http://caravanersforum.com/viewtopic.php?t=65150

Hill
__________________
200 Series
AOR Quantum 4

Last edited by Hill; 25-03-19 at 12:49 PM.
Reply With Quote
  #13  
Old 01-09-16
nicho nicho is offline
Junior Member
 
Join Date: Sep 2014
Location: NSW
Posts: 33
Default

https://m.youtube.com/watch?annotati...&v=XBZu39pQ8Gg

Came across this vid in my research on wdh vs airbags and found the maths pretty interesting
Reply With Quote
  #14  
Old 03-09-16
bugeye50 bugeye50 is offline
Member
 
Join Date: Oct 2013
Location: Douglas Park NSW 2569
Posts: 90
Default

Thanks OJ, I found your explanation of the weight distribution most informative. Being a caravanner, towing a 2500kg ATM, 21 foot van behind an NT Paj, I find the use of a WDH imperative. Although a dual axle with a very light ball load (unloaded) I find that once the van is loaded and hitched to the vehicle, the back of the Paj does go down quite a bit, making it a bugger to drive. Once the WDH is fitted, and sway control (in my case) the rig levels up nicely and makes it quite pleasurable to drive. I don't overload the WDH bars but I've just gotta hope that those welds on the tow bar have been done correctly. Will go out this morning and look for any visual signs of fatigue.
Reply With Quote
  #15  
Old 22-01-19
denisp denisp is offline
Junior Member
 
Join Date: Dec 2018
Location: Mt Eliza
Posts: 48
Default

Very interesting post.
I have prepared a spreadsheet for our new Paj Sport.
For now I have put 55%, 45% as axle load shjares at tare.
Would like to be more accurate, and wondering if you or any poster can oblige.
Regards,
Denis
Reply With Quote
  #16  
Old 22-01-19
old Jack's Avatar
old Jack old Jack is online now
Valued Member
 
Join Date: Jun 2011
Location: Adelaide
Posts: 6,771
Default

Hi Denis,


Only way to know 100% accurate is to weigh the front and rear axles on a weigh bridge or with wheel scales.
Service Manual states tare is between 2085kg and 2100kg depending on factory options, without dealer fitted accessories or a full tank of fuel, I do not think this covers the 7 seater either. Your Owners Handbook will have your tare weight in the specifications section. I seem to recall the PS front axle weight with a factory nudge bar was around the 1100kg so 50% to 53% as an estimate.



If you PM "Mundy 55" he has a great spread sheet where you add your data in and it calculates axle loads and weight distribution for vehicle and trailer/caravan. He has posted it but I cannot find the link.


OJ.
__________________
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 .
Reply With Quote
  #17  
Old 02-03-19
PaulMcG PaulMcG is offline
Junior Member
 
Join Date: Apr 2017
Location: Sunshine Coast
Posts: 14
Default

(Mr.) OJ

I came across your post on this in a search on WDH's. Thanks for a comprehensive explanation.

I'm just in the process of going from a camper trailer, about 1400kg ATM, to a van, possibly about 2300-2400ATM. Obviously I am going to use a WDH with this heavier tow load, and I've done all calculations and am happy to be well within all weight limits of vehicle, trailer, and combination.

However, I just can't get my head around a final concept:-

Let's say trailer has an ATM of 2,200kg, made up of a combination of 2,000kg GTM, and 200kg ball weight. Now I fit a WDH, which effectively transfers some of the ball weight back to the trailer axles.
If I have the van fully loaded with water tanks full, etc. and am at my limit of 2,200 ATM prior to use of the WDH, does this effectively mean I will now exceed the trailer's GTM, when that extra mass is transferred to the trailer's wheels.

Perhaps I am overthinking this, but I am just trying have a full understanding of all potential limits and complications prior to making any final decisions on vans. Can safely say that I won't get a sensible answer from a caravan salesman.

Thanks in advance for any reply, many of your posts have been a source of valuable information to me over the years.

Paul
Reply With Quote
  #18  
Old 02-03-19
Ian H Ian H is offline
Valued Member
 
Join Date: May 2015
Location: melbourne
Posts: 1,462
Default

I'll chip in here and let you know that when I weighed my set up with the WDH off and then on, it transferred 160kg off the rear axle. 100kg went to the front wheels and 60kg to the van wheels (single axle). Depending on how tight you pull the hitch, that's the sort of difference it can make.
__________________
2015 NX GLS, Factory alloy bar, Peders Springs & EFS Shocks, MM Auto Mate, dual batteries with Redarc DC/DC, LRA 58L tank, Safari snorkel, Boo's bash plates (full set), 17" steels with BFG KO2's, Drifta drawers with slide, TPMS, Uniden UH8080S. Infinity caravan and a TVan Firetail.
Reply With Quote
  #19  
Old 02-03-19
old Jack's Avatar
old Jack old Jack is online now
Valued Member
 
Join Date: Jun 2011
Location: Adelaide
Posts: 6,771
Default

Ideally the WDH should be adjusted so that all the weight transferred off the front axle is returned back to the front axle, at the same time some of the towball weight will be transferred back to the trailer axle. Best way to gauge this is measure the front EBH ride height from centre of hub to under wheel arch in a vertical line before the towball load is applied then once the towball load is applied adjust the WDH so the front axle EBH returns back to the unhitched height. Too many people put excessive loads on their WDH to compensate for weak rear coils, all this does is put extra load on the towbar, it's attachment to the vehicle and the trailer coupling.
You do not need fancy scales just a tape measure!

OJ.
__________________
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 .

Last edited by old Jack; 18-04-19 at 10:09 PM.
Reply With Quote
  #20  
Old 28-03-19
PaulMcG PaulMcG is offline
Junior Member
 
Join Date: Apr 2017
Location: Sunshine Coast
Posts: 14
Default

Thanks Ian for the reply, that was pretty much what I was after.

Thanks OJ, yeah that's how I have set up a WDH on a previous vehicle, just measuring front ride height before and after hitching.
Reply With Quote
Reply

Thread Tools
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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
weight distribution hitch gunbarrelpaj Generation 4-2 Pajero 3 16-01-14 06:39 AM
Trailer 'Weight Distribution Hitch' 260DET PB -PC Challenger 2009 - 2014 13 02-07-13 09:16 AM
Weight Distribution Hitch C&C Generation 4-1 Pajero 3 22-09-12 09:23 AM
MM Weight Distribution Hitch - Dimensions MountainMan Bolted on bits, factory and aftermarket accessories 1 15-02-12 05:44 AM
Challenger weight distribution hitch salandaar PB -PC Challenger 2009 - 2014 2 08-10-11 03:44 PM


All times are GMT +10. The time now is 04:35 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.