Aero and springs formula

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1

I did an aero formula with some help in FM5, I have been using that same formula in forza 6 and it works well still but I think you not only can use it for aero but also for springs. Use the same ratio as

https://forums.forza.net/turn10_postst17236_Aero-Base-data.aspx?=

1st column is the cars front weight %( after upgraded)
2nd column is the % of rear wing downforce and springs compared to front
3rd and 4th column is an example of is front wing/springs is 100 rear should be starting at X (4th column)

I still got a day a data gathering but I looks really good for a decent base for springs and aero balance.

60 -33 100 67.0
59 -28.15 100 71.9
58 -23.3 100 76.7
57 -18.45 100 81.6
56 -13.6 100 86.4
55 -8.75 100 91.3
54 -3.9 100 96.1
53 0.95 100 101.0
52 5.8 100 105.8
51 10.65 100 110.7
50 15.5 100 115.5
49 20.35 100 120.4
48 25.2 100 125.2
47 30.05 100 130.1
46 34.9 100 134.9
45 39.75 100 139.8
44 44.6 100 144.6
43 49.45 100 149.5
42 54.3 100 154.3
41 59.15 100 159.2
40 64 100 164.0
39 68.85 100 168.9
38 73.7 100 173.7
37 78.55 100 178.6
36 83.4 100 183.4
35 88.25 100 188.3

2

I also setup aero based on weight distribution but have completely other ratios than you.

In short: more weight on the front requires more downforce on the rear compared to the front and vice versa.

For normal Forza aero kit (50-100 front, 75-200 rear) I figured that for balanced aero the sliders should be aligned if the weight distribution is 47%, if wd is less than 47% rear slider should be lower than front slider, if wd is higher than 47% rear slider should be higher than front slider.

Examples:
40% 100 187
47% 100 200
50% 100 >200 (so you have to reduce front aero to keep 200 rear aero, i.e.: 98 200)

But I guess those differences come because we tune differently.

3

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Another element to consider is the springs, when you look at the defaults, the majority are not distributed per weight…i.e. Front-to-Rear Springs Ratio versus % Front Weight. So, I first adjust these and/or assume the % Front Weight per the default springs, thus, a new value. Then, adjust aero.

PRKid
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4

There is no formula that will actually help you as much as just figuring it out on the car you’re using. Most cars use a set aero balance with which they are fastest - most of the time either all or none, and in the case of GT, max front and min rear.

2 Likes
5

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Agreed!

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