Quote:
Originally Posted by mike156
I guess I'm confused where you're going there. Buy softer springs or buy an adjustable swaybar? You're buying something either way to change the roll stiffness up front.
|
At the limit suspension settings are a black art. There is no right answer.
There is good information on this thread and some not so good.
Have a look at F1: two very, very talented drivers, say Hamilton and Rosberg driving the same car (supposedly) on the same track on the same day. One day Hamilton is faster and the next Rosberg is faster. Change tracks and it all starts over.
Conventionally you deal with the problem of getting the power down at the rear by stiffening front roll or softening rear roll. Or, you could tighten up the lsd but that may or may not work for you.
One thing is for sure, the more power you have to deal with the more you bias roll resistance to the front axle, unless you are dealing with fwd or awd.
For these cars for street use the Torsen is pretty good. To go faster on whatever tires you have chosen to run you should first fit better shocks, as Subaru/Toyota have just done for 2015.
Next consider increasing front roll stiffness relative to the rear as these cars are tail happy from the factory, even the BRZ which is the tamest of the 3 settings released into the World markets.
If you fit a clutch type lsd then be ready for some serious understeer under heavy power applications. Once that lsd locks up the chassis will push unless it is already well turned in.
Too bad this isn't made for our cars, yet:
http://www.wavetrac.net/technical.htm
Torsen also makes one: the T2R which incorporates a clutch type pre-load slip limiting device within the Torsen diff.
http://www.torsen.com/products/T-2R.htm
One wonders why Toyota/Subaru didn't spec one....