Setups in general

[JeffR]

New to me, I found out that steering ratio affects front tire temperatures. Although I use joystick, I use linear steering, and have hack (slow speed turn hack) turned off.

What I found was that lowering the steering ratio too much will heat up the front tires. I ran 18:1 at Zandvoort and got my best time (1:28.31). If I reduce the ratio down to 10:1, my time for 1st full lap can be about 1:30, but by then front tires are up to 270+ degrees.

I've never seen this mentioned in any setup guide, but the issue is that the fronts are steered too much and overheat.

Now for questions:

What is the effect of front toe-out? Why choose -.300 instead of -.025? (I can't tell if toe-out affects tire temps...).

Overall stiffness. Allison Hines setups are extreme, but why not just run 120/100 spring rates and total bar rates around 300 to 350? One advantage of stiff setup is less camber, which should help with inside tire grip. For a bumpy track, I just raise the car height.

[D_Man]

Jeff, I can't comment on the effect of steering ratio with a joystick, but I use the steering hack turned off and a steering ratio of 13:1 with my wheel on most tracks.

As far as the toe-in goes, it just seems to assist turn-in on corners. I have higher numbers (negative front and positive back) on twisty tracks and lower numbers on tracks like Monza and Spa.

You have to think about the "attitude" of the tyre in a corner and imagine how the amount of toe-in is affecting the cornering ability of the car. The camber is also important to maximise traction.

I hope this makes sense.

Dave