Okay peeps, I have a simple question with a potentially not-so-simple answer: what is the correct steering rotation and steering lock for the ISI BMW Sauber F1?
The reason I'm asking, is because of conflicting answers on the internet + comparing to other sims + based on the feeling when I'm driving.
For those who don't know, the formula is as follows:
Steering ratio (SR) = degree rotation / (steering lock * 2)
Now, some terminology:
Steering ratio - is fixed for the car
Degree rotation - is the rotation of the physical wheel in your hands (NOT the on screen wheel, as that can be inaccurate in older sims)
Steering lock - is the changeable value in the tuning screen (for those wondering why it's multiplied x2, it's because the number refers to the degree your car's tires turn one way. So total lock-to-lock left to right is x2)
Other sims use values below:
EA F1 Challenge 99-02: 270 degrees, 23 lock = SR 6 (note: 23 lock is the highest it can go, and consensus on the internet is 270 deg is best (also feels best to me). Keep in mind though that this is an old game and 900 degree wheels weren't exactly common back then)
Game Stock Car/Automobilista: 360 degrees, 18 lock = SR 10 (note: recommended settings by the developers. Feels spot on to me)
Live For Speed: 400 degrees, 16 lock = SR 12.5 (note: degrees is fixed, lock is maximum the game allows. Feels ok, but could use more rotation in tight corners)
Assetto Corsa I think has 360 degree for the Lotus Exos F1 look alike (steering lock not provided). PCARS also has 360 degree for Formula A I think (I don't have PCARS so someone can check).
The gold standard, of course, is real life. In Monaco hairpin when you would see the highest steering rotation all season I've seen drivers crank 180-200 degree one way (meaning 360-400 degree lock-to-lock). Don't know about steering lock, but I assume it changes track to track. But there still should be a ballpark figure for the overall steering ratio. My research gives numbers around 10-12, which agrees with GSC/AMS/LFS.
Now rFactor is the confusing one. Using GSC/AMS/real life or LFS values, I can never get the BMW Sauber to handle right. It just doesn't turn in enough. Now today I decided to give the EA F1 Challenge numbers a try and voila! It handles perfectly. The amount of input makes sense and it feels natural. This is crazy because as you can see above the steering ratio for F1 Challenge is way off the other two.
My theory was, the steering lock for F1 Challenge refers to full lock-to-lock and not just one way. So when applying the formula you don't need to multiply by 2. Which gives steering ratio of...
12. Perfect slap bang in the correct range.
Now, the problem is, rFactor's number is definitely
NOT full lock-to-lock. Because for any other car in the game the numbers are for half a lock (the correct notation). So I'm confused why this number works so well
Either the Sauber F1 in rFactor is modelled wrongly, or GSC/AMS/LFS got it wrong. Which is unlikely because their numbers are more like real life. My brain is starting to melt at this point
TL;DR
1) What is the correct steering rotation, steering lock and steering ratio for REAL F1 cars?
2) Is the vanilla BMW Sauber in rFactor known to have a wrongly modelled steering rack?
3) Basically, I want to use the most realistic setting. But using realistic setting in rFactor doesn't work well.
This is the crux of the problem. I would just use 270/23 and not think too much, but my brain is telling me it's wrong
Damn my OCD
I hope some of GTPs more intellectual members can enlighten me 👍