FPV MIC
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- 4,318
- Australia
- GT-MIC
I've been wondering for a while now if this had been the issue I was having a while back doing a BMW hotlap challenge but as I only have one leg, I couldn't test the theory. Thanks for that information (especially the bit about manually blipping the throttle even when auto clutch and auto blip are turned on), it'll be very useful in the future.I made an interesting discovery the other day. Some of you may have already worked this out, but for those who haven't, this might be useful information.
I've noticed in AC that some cars have horrendous snap oversteer under brakes, like an unrealistic amount, not just lift-off oversteer. The first few days that I played it I didn't care too much, because I wasn't messing about with setups much, I was just trying out different cars to see how they felt mostly.
However, the other day I was messing about with setting some cars up for different tracks, and just generally finding how dramatic a difference I could make to the cars' behaviour with setup changes. One combination I tried was the Lotus 25 at Brands Hatch. The 25 here had a shocking tendency to snap into oversteer in the braking zones, and even after adjusting the setup the car was still doing the same thing. I noticed that the setup changes I'd made had affected the car's attitude in a predictable way in everything but braking, where it still exhibited the exact same violent snap oversteer. I even tried going extreme with the setup to see what effect that would have: The car was an understeering lump with this setup (as it should have been), but still under braking, even in a straight line, the car would snap into oversteer suddenly.
I was scratching my head for a moment over this, because it didn't feel right. The way it was behaving wasn't realistic to begin with, but the way the setup changes had affected the car in a predictable and realistic way in all other conditions, but the car still had this reaction when I was braking for a corner. I went back to a good setup, and just ran lap after lap, adjusting my driving to see what was causing it. I don't know how I'd missed it before, but the sudden snapping was happening on downshifts, specifically when the shift had been completed. Now because I don't have a shifter, so I have to use the paddles, I use auto clutch and auto blip. After noticing it wasn't actually the braking itself, but the downshifting that was causing the issue, I noticed the throttle blip on downshifts was very small, even when braking hard into a corner and shifting right on the threshold, the blip was the same as it was when downshifting when coasting. It didn't seem to be giving it enough throttle between shifts.
So I quit the session, and went back into it, this time turning off auto clutch and auto blip. I ran a couple of laps to get used to the clutch (using a clutch with paddles feels so foreign to me, hence why I don't normally do it lol). Once I had a feel for it, I tried doing a fast lap and downshifting without rev matching, and the back-end snapped hard, just like with the auto clutch and auto blip turned on. So after doing this a few times to make sure it was definitely the cause of this behaviour, I started rev matching manually on downshifts, and this solved the problem completely.
Since I'm comfortable with hell-toe downshifts in real cars (been doing it since I was a kid), the rev matching in game was an automatic reflex. I could match the revs perfectly with every downshift. But interestingly, the amount I would blip the throttle without even thinking about it was a lot more than the game's auto blip, which barely touched the throttle on downshifts. I've since noticed that in many cars the auto blip is enough to keep the car in check, but some, like the 25, the auto blip is just way off, and it's causing a compression lockup when you're downshifting at the threshold on corner entry.
You can avoid it by braking longer before you downshift, and keeping the shifts low in the rev range, but this will lose you a lot of potential lap time. I've noticed that you can manually blip the throttle even when auto clutch and auto blip are turned on, so you can keep them both on, and just manually blip the throttle to match the revs on aggressive downshifts, and it eliminates this nasty snap oversteer a bunch of cars have.
Anyway, sorry about the long winded explanation, I'm not even sure if I worded it all as well as I could have lol, but I hope that helps some people.