still wondering should i get the Sway bar?
10-25-08, 11:38 PM
#21
Me personally, I am leaning toward f-sports. I don't need more understeer.
But, I would like to have less body roll up front (with the thicker sway bar), but that will change the dynamics of the car, which is very sensitive.
But, I would like to have less body roll up front (with the thicker sway bar), but that will change the dynamics of the car, which is very sensitive.
Last edited by t0e; 10-25-08 at 11:48 PM.
10-26-08, 03:01 AM
#25
.But, I would imagine that you could just spray paint them whatever color you like.
I'm sure kurtz will have a more technical answer as to why, but IIRC the front sway bar actually affects the REAR dynamics, and vice-versa.
10-26-08, 08:42 AM
#27
Setup 2... from the factory this car has quite a bit of understeer built into it (as do almost all cars anymore, because it's "safer")
Setup 2 will significantly reduce this. Setup 1 will reduce it, but not as much.
Herb Adams wrote a pretty nice book on chasis engineering if anyone wants to get into the technical stuff a bunch, but the "simple" thing is that the larger your front bar the more the car will understeer and the larger your rear bar the more the car will oversteer (all else being equal on a normal RWD vehicle).
With the F-sports on my 350 I don't find any oversteer issues, so I suspect I could've gone even stiffer rear if anyone made one, but it's a big noticable improvement as is, and "good enough" for the driving I do with this thing.
On my last RWD car (albeit a considerably larger and more powerful car than the IS350) I used some Herb Adams designed bars that increased the front stiffness by 94% and the rear stiffness by -441- percent. And that got the car just about perfect neutral (neither tending toward under nor over steer)... under normal conditions you got neutral handling and if you romped the gas you got throttle induced oversteer, which is how a RWD car should behave IMHO...no electronic nannies on that car though.
Given all the electronic nannies on this car it's gonna be pretty tough to spin the car out unless you turn VSC/TRAC off, no matter what bars you go with.
02-11-09, 10:01 AM
#30
Setup 2... from the factory this car has quite a bit of understeer built into it (as do almost all cars anymore, because it's "safer")
Setup 2 will significantly reduce this. Setup 1 will reduce it, but not as much.
Herb Adams wrote a pretty nice book on chasis engineering if anyone wants to get into the technical stuff a bunch, but the "simple" thing is that the larger your front bar the more the car will understeer and the larger your rear bar the more the car will oversteer (all else being equal on a normal RWD vehicle).
With the F-sports on my 350 I don't find any oversteer issues, so I suspect I could've gone even stiffer rear if anyone made one, but it's a big noticable improvement as is, and "good enough" for the driving I do with this thing.
On my last RWD car (albeit a considerably larger and more powerful car than the IS350) I used some Herb Adams designed bars that increased the front stiffness by 94% and the rear stiffness by -441- percent. And that got the car just about perfect neutral (neither tending toward under nor over steer)... under normal conditions you got neutral handling and if you romped the gas you got throttle induced oversteer, which is how a RWD car should behave IMHO...no electronic nannies on that car though.
Given all the electronic nannies on this car it's gonna be pretty tough to spin the car out unless you turn VSC/TRAC off, no matter what bars you go with.
Setup 2 will significantly reduce this. Setup 1 will reduce it, but not as much.
Herb Adams wrote a pretty nice book on chasis engineering if anyone wants to get into the technical stuff a bunch, but the "simple" thing is that the larger your front bar the more the car will understeer and the larger your rear bar the more the car will oversteer (all else being equal on a normal RWD vehicle).
With the F-sports on my 350 I don't find any oversteer issues, so I suspect I could've gone even stiffer rear if anyone made one, but it's a big noticable improvement as is, and "good enough" for the driving I do with this thing.
On my last RWD car (albeit a considerably larger and more powerful car than the IS350) I used some Herb Adams designed bars that increased the front stiffness by 94% and the rear stiffness by -441- percent. And that got the car just about perfect neutral (neither tending toward under nor over steer)... under normal conditions you got neutral handling and if you romped the gas you got throttle induced oversteer, which is how a RWD car should behave IMHO...no electronic nannies on that car though.
Given all the electronic nannies on this car it's gonna be pretty tough to spin the car out unless you turn VSC/TRAC off, no matter what bars you go with.
Thanks for the explanation, but lets say if i was looking for oversteer, should i just go with 160% set up for the rear? I know its not enough but its better than nothing in this case. Im just trying to get my car to have less understeer. My front tires are bald compared to my rear tires.