Wednesday, Sep 23, 2015 at 19:48
Notso
First of all I was talking about vehicle handling after it had been lifted. As for load and sagging suspensions, has it every occured to you that it is supposed to sag? Do you think a company like Toyota that has made the biggest selling 4x4 ute in the country for the last fifty years does not know how to make a
suspension that works?
This little extract below is a post from a bloke named Robi. It was posted on another
forum recently during a discussion on bump steer.
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Inspired by Peter of Peter n Margaret, I finally worked out how to post a photo.
I mentioned in my comments about the geometry & design of leaf springs the example of a Toyota Ute. With luck, here it is..
Recapping the key points, the front eye mounting point is way lower than the spring rear eye, and the spring is close on flat. When this thing has extra load, and the spring goes concave, it actually increases the roll understeer % which is highly desirable with increased load in the vehicle.
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If you look at this link you will see the post and a photo of a Cruiser ute at the bottom of the page. Two posts above it is a lot more on the subject, particularly in relation to caravans, from the same man. He also mentions his qualifications.
http://caravanersforum.com/viewtopic.php?f=2&t=22776&p=347673&hilit=bump+steering#p347673
As I said to DQB, learn how suspensions work before you start changing them. If the car has been designed to run with the
suspension down when loaded and the owner brings it back up to standard height or higher, it is not surprising that it does not handle like it should.
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