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Message started by Sprintcyclist on Nov 1st, 2015 at 4:38pm

Title: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 4:38pm

https://youtu.be/PFzrWHTG5e8

https://practicalmotoring.com.au/car-advice/everything-you-need-to-know-about-towing-heavy-trailers/

very good site

Title: Re: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 4:42pm

Quote:
...............If you need to increase TBM, it is better to shift weight from behind the rear axles forwards, than to shift weight ahead of the axles even further forwards. Weight centralisation should be your goal. 

The less centralised the weight, the more TBM you’ll need for stability, and the greater the TBM, the more stress on the towcar and less able the towcar is to turn the rig around corners.

The scientist in the video above did the research and testing to produce a paper on the subject (publically available, but you have to pay for it).  Having read it, the conclusion is clear:

It was found that the dominant factors affecting stability were the trailer yaw inertia, nose mass (mass distribution), and trailer axle position.  It is interesting to see that the trailer mass alone does not dramatically affect the high-speed stability, as this runs contrary to current guidelines relating to limits on the relative mass of the car and trailer.

In other words, the distribution of weight in a trailer is more important than the total weight.  If you want to buy the paper for yourself you can do so here.......


same site, and here is a perfect test for yourself.


Quote:
.................If you want a practical demonstration of the effect of trailer weights find a four-wheel-steer trolley and load it like so:




dynamic-trolley

Two 20kg weights should do it.  Then push it around corners, and at a brisk pace in a straight line, waggle the trolley.   When you’ve finished re-stacking the shelves you knocked over the point will be made..............






https://practicalmotoring.com.au/car-advice/everything-you-need-to-know-about-towing-heavy-trailers/

Title: Re: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 4:48pm

phew, there's a nice small overhang. Low leverage.



isuzu mux

Title: Re: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 4:50pm




isuzu dmax - bigger leverage from towball to rear axle

Title: Re: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 6:48pm
prado



similar leverage/overhang to the MUX I think

Title: Re: Caravan stability test
Post by Sprintcyclist on Nov 1st, 2015 at 7:00pm



better prado image

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