My HS build

[CoryM]

Originally Posted by Jason@SportsCar

If you are happy with it dont change it.

Body roll is not a bad thing if you have enough camber, and with the crash bolts you should be way better off camber wise than most HS cars. The softer front bar really helps mid corner rotation, and will certainly help power down with that open diff. I will take corner exit over transitional speed every time - you can pick the transitional speed back up with better shocks.

Yeah, it always comes down to keeping the driver happy. You're right, mid corner shows a hint of understeer, but immediately transitions into rear rotation so I am OK with it. It's very brief, to the point you don't have time to correct it before it sorts out. As far as camber, I was after more contact patch on the inside tire, which the front bar gains and more neg camber reduces.

I would say it is in your head. Its like when someone tells me they changed from 87 octane to 91 octane and the car feels more stronger....

After 5 years, maybe the driver mod has improved? Like Jason said, if you feel like its faster, then stick with it.

If you are going to be running NT01, that will throw you in F Street Prepared.

I have ran that setup, and its just dead weight. You can control much more with just tire pressure in autocross

I can't see it being in my head. After 4.5 years of racing the car, put the F bar on and after 3 events to get used to it and tune pressures: I'm certain on this car at these autoX events it is faster. I realized last night I'll just run my wet tires for the winter series and hope for enough wet days to compete. You've run this setup? This exact setup? On a 5dr with 205/50/r15 on 15x5.5" rims? .... why?

As far as the front bar goes I want to be clear: I did not install the front bar to control balance. When chassis tuning, I always try to maximize grip first, then adjust until balance is right. This is the same as tire pressure tuning; maximize grip with temp probe or chalk, then adjust pressures to reduce grip where needed for balance. The sway bar does the same, except I am using it to help compensate for the high CG. I wanted more grip from my inside front tire, and the front swaybar accomplished this. I was able to reduce neg camber up front to -2.5° (which I forgot to include in my first post), this not only improves the inside tire contact patch further, it also makes a large difference to the braking grip(VS -2.8° which was my previous). After adjusting the balance with rear tire pressures, I am comfortable that it is well set-up, and the co-drivers (once they get used to timing the soft springs) agree so far. I also have pictures to show I have much more contact patch than before.

Who knows, maybe I'm crazy but I've always figured the whole point of suspension was to keep as much rubber in contact with the road as often as possible (or at least when it's required). The front bar seems to accomplish this without causing too many compromises so I am happy.

All that being said, the Yaris is now getting totally forgotten about while I sort out the E-mod car for it's first season.

Cheers.