BRC - Out of the Steam - 1945 [Final Race Results]

[VicVictory]

Back up to 6th for me. Do I dare try to revise it? Last time that didn't go so well...

[BlastersPewPew]

got a question for the fuel usage.
All cars did start with 15 (liters) of fuel, will this happen in the race too, or will every car be filled individually?

Because right now, i would have driven 7.5(L) around for no reason. And the car with the worst fuel economy did finish with 0.0L left, which would be ideal for every car.

Actually if you watch the video again you will see he runs out on the straight, once he stops he is removed from the race and gets DNF on the last lap, he is not dead last on the board because this type of race is best lap, not who gets 1st/2nd etc.

[Packbat]

If I'm reading it right, the format for this one is actually a literal race, not a fastest lap - so consistent lap times will be big, here. These 10-lap tests are just to estimate fuel consumption, I think.

[BlastersPewPew]

If I'm reading it right, the format for this one is actually a literal race, not a fastest lap - so consistent lap times will be big, here. These 10-lap tests are just to estimate fuel consumption, I think.

Ohhhhhhhhhhhhhhhh, gotcha. Well I dont think I will change my car, have no clue what I am doing with it anyway, need some tutoring on suspension setup.

[Packbat]

My best understanding of the setup based on Tests 2.5 and 3 is that this is good:

Yaw Rate Green.png (81.89 KiB) Viewed 3651 times

and this is bad:

Yaw Rate Salmon.png (81.96 KiB) Viewed 3651 times

Other than that, what I did was increase damping front and rear until it stopped improving both Sportiness and Driveability and then just fiddle until I got sick of fiddling.

[07CobaltGirl]

Why is the 2nd one bad?

[Packbat]

The splits for the fastest lap of the green car in the BROBOT were 52.24, 49.74, and 59.45 (down from 64.37, 51.27, and 66.34 in-game).

The splits for the fastest lap of the salmon car in the BROBOT were 52.44, 49.87, and 60.82 (down from 64.09, 50.94, and 65.94 in-game).

In other words, in the three sectors, the green car gained 12.13, 1.53, and 6.89 seconds, respectively, where the salmon car gained 11.65, 1.07, and 5.12 seconds, respectively. The green car was 1.02 seconds slower in-game and 1.70 seconds faster in BROBOT. And the only difference I can find that might explain that is the yaw rate charts.

[TheBobWiley]

The splits for the fastest lap of the green car in the BROBOT were 52.24, 49.74, and 59.45 (down from 64.37, 51.27, and 66.34 in-game).

The splits for the fastest lap of the salmon car in the BROBOT were 52.44, 49.87, and 60.82 (down from 64.09, 50.94, and 65.94 in-game).

In other words, in the three sectors, the green car gained 12.13, 1.53, and 6.89 seconds, respectively, where the salmon car gained 11.65, 1.07, and 5.12 seconds, respectively. The green car was 1.02 seconds slower in-game and 1.70 seconds faster in BROBOT. And the only difference I can find that might explain that is the yaw rate charts.

As far as I can tell cornering speeds and stability require extremely precise settings in order to hit the sweet spot in the yaw rate. The yaw rate change based on the weight and weight distribution of the car and will change as you change other parts of the car, which can throw lap times off when comparing different engines and what not. At least it seems to stay stable for around a 5-10kg change in car weight and the reason the 2nd graph is "bad" is because of how sharply the yaw rate turns at the top into the drop. That means that at that speed all of a sudden the car loses grip and spins out, which causes the AI to drive under-speed in the corners to avoid a spin out. Getting a gentle curve as well as figuring out what "s" values your car likes is key to tuning the suspension. I have spent more time on my suspension tuning than any other part of the car and was able to achieve 20m - 1.2g @ 56 kph... but it somehow caused a slower lap time than my current 20m - 1.17g @ 54.6 kph.

EDIT: By gentle curve I mean anything smoother than direct drop off.... but I could be somewhat wrong as my graph has a pretty steep drop-off to under-steer but works well for me. Also, bottom-out (ride height) makes a big difference on green hell, but kills times on the other tracks :\

[TheBobWiley]

Just wondering, is anyone else's car not achieving the same top speed on the back-straight as in-game? I can not tell why I only hit 174 when I do 180 in-game...... tried increasing car weight to simulate fuel and only lost 1 kph off top speed for an extra 70 kg.....

[07CobaltGirl]

I don't think the in-game calculations are dynamic like the BROBOT challenge AI is. There are driver errors and traffic in the challenge, while the game calculations are for The Stig and static. Just my understanding. If you look at the bottom right of the screen you see data scrolling up which often shows various "driver errors" which effect the lap times, and probably other aspects of the race as well (grip, fuel, etc.).

EDIT: If it's of any interest, in the last race I hit 184.1km/h and in the game I hit ~185km/h on the Slingshot.

[Zabhawkin]

Didn't get a chance to revise and submit my car... Lost 7 places

[Quotex]

I made the mistake of thinking that we couldn't enter new revisions, by reading previous posts. I've sent my revision today thinking that we couldn't enter anymore, but it was because i was reading certain posts wrong.

Anyway, I can't wait for the racing to start, as i've completely finetuned my cars engine now, without losing much of it's reliability.

Also, i should note.

The car ingame is 689kg...when i rebooted the game it suddenly was 682 kg, but when i ran it on the test track, and also in the menu listing it was 689 kg.

[BlastersPewPew]

Until I get my PC up and running I am going to have to go with my last submission, it isnt perfect (or even very good) but it is all I got right now. Laptop wont run Automation so I cant even use that to try and get a revision in on time. Ah well.

[Tycondero]

The car ingame is 689kg...when i rebooted the game it suddenly was 682 kg, but when i ran it on the test track, and also in the menu listing it was 689 kg.

I have also seen that happen. I don't know why, but the game as issues with weight calculations it seems. However if you just reselect your engine variant the weight is displayed/calculated correctly.

[Absurdist]

Same here, it appears to show the wrong value until you have the car "update" in the designer. I'd assume the real value is the one after the game updates the value. I hope so, otherwise I am in trouble! XD