|Originally posted by zkhennings:|
Will you could probably answer this, how does a rear suspension with no passive steering/toe change feel to drive, AKA in your opinion is it beneficial to design in some passive rear steering?
I haven't actually heard much about it either way... which tells me it's not a definitive advantage or disadvantage... or even a significant parameter in system trade studies.
I've read about different drivers liking it different ways. It may just be driver preference.
The '88 rear end has toe change built into the geometry, not the bushing deflection, for example. This is set up to toe the outside rear in slightly to promote understeer as the body rolled in a corner. A large majority of modern cars have some sort of passive steering built into the suspension. I think this is primarily for driver confidence and predictability of the car as it approaches the limit. That's NOT to say that it is for the confidence of *good* drivers...
Alternatively, the 308, 328, 348 and 355 Ferraris use dual H-arm rear suspensions which not only are not designed for toe change, the basic dual H-arm architecture is incapable
of bump steer. The later models may not have any either, but their geometry is not as easily understood from looking at photos. This is also true of Jaguars, TVR's, older Lamborghinis, etc.
You can also look at the current Lamborghini Aventador rear end and see that it does not have dynamic toe change.either.
[This message has been edited by Will (edited 01-29-2015).]