"The Feather"

[sk15kev]

Sorry guys I think it is the Goodyear slicks, my mistake sorry.

Next time I am on, I will have a look at the tyres.  Have only ever ran the car on races of u pto 5 laps so never noticed.  Thanks for the good feedback though, although I am surprised about the turn in and the kerb comments.  i found that it hardly noticed the kerbs.

-K

[Spiny Anteater]

I ran it again, and for longer last night, and must admit that I think I may have hit a couple of kerbs wrong when I first ran the car - it felt much better over the kerbs last night. Very often I end up straddling some of the kerbs in the downhill chicane (2nd-4th corners going in reverse) and I think I hit a couple of those wrong and unsettled the car badly. As for the turn-in - it definitely lacks turn-in compared to my builds, but I think that's a function of it being a more stable car. Depending on your driving style that's not necessarily a bad thing, and once I'd mentally tuned myself to turn the steering a bit earlier the problem went away - if you're happy with the car leave it as it is.

Having run it for longer I got it down to 89.807 seconds. That's about 1/4 second slower than my FSFocus, and about 0.1s behind Blooze's. Take driver variations into the equation and I suspect those gaps don't mean a lot - it's definitely a quick car.

Going back to the tyres, i had a look at the pressures while running those laps, and they were lower than I expected - typically about 33 psi front and rear. While I usually aim for 32psi when warm, that's not too high and I don't think that was causing the understeer. What I think may be the cause is the difference in tyre temps - 225F at the front and 148F at the rear. I don't think I've ever had a car with such a variation in temps Front to Rear. I don't know the cause, but if I had to guess I'd be looking at that low diff setting. I suspect that it's the inside wheel spinning up that's putting all that heat in, although I'd need to run a non-figure-of-8 track to be sure as the temps balance out L-R over the lap. I've always found the low diff settings help pull a FWD car though a corner though, so that may be something you only need to look at if you decide to run a longer race in it.

Nice car though - I think I'll keep it like this for a while

[sk15kev]

Nice analysis.

When I was tweaking it I sacrificed turn in for mid corner stability, helping in flow around those sweepers, which I think it does quite well.  The diff helps a lot with this, meaning you can apply some power without gaining too much understeer.

Not sure what to do about the rear tires, if I increase the rear pressure it may disrupt the balance a bit?

[BarbecuePete]

I have the issue with cold rear tyres on a few of my cars... I've not tried to get them to run hotter as, like Kev I find the car still drives nicely also im not really sure how to get them hotter to be honest or what effect it will have on the car if I do...  My only thoughts really are to lower the rear tyre pressures to create more movement in the tyre to generate more heat...   

[fndrbndr]

Well, my solution for the rears would be, if it ain't broke, don't fix it.  The car sets well in corners, so I wouldn't worry about rear tires.  I'd also point out that you don't WANT the rear tires to grip too much in a FF car.  With all the stuff the front tires have to do, that's begging for understeer.  If the game would allow it, I'd attempt to put slicks on the fronts and stock tires on the back.  (might not work, but would be interesting)  Also, look at ske's universal ff tune.  The entire concept, at least as I understand it, is to coax the rear into breaking loose.

[Spiny Anteater]

Sorry if it sounded like the rear tyres need sorting - as the saying goes: if it ain't broke, don't fix it.

I think it's more the front tyres getting too warm and that's why the understeer comes in after a few laps. I don't know the cause - the diff setting is just my best guess.

The 148F on the rear tyres is lower than I get on most of my tunes, but that's mainly due to the fact that I like the back end loose(ish) on my FWDs so I don't think it's anything to worry about. However, I have very few cars where the front tyres get above 210F (remember that's near enough the boiling point of water) so that 225F is almost certainly what's causing the understeer. For comparison, I'm sure I remember seeing somewhere that F1 teams aim to have a tyre temp of about 90 degrees C (~195F).

[sk15kev]

Don't worry didn't take it wrong.  Just seeking perfection.