[MVRC] Mantium Virtual Racecar Challenge 2025 (Grand Prix Cars)

[yinlad]

Alright. I still feel like this is a non-issue but I can agree to tone town the effect a bit... See if you like this better: https://docs.google.com/spreadsheets/d/ ... 5WKzE/copy

Maybe it’s because I’ve always used windows but the problem is even if I perfectly balance the car on my simulations I’ve never had identical results from the official simulation so the balance ultimately isn’t fully in my control. Having the lap time drop off reduced a bit would help in that regard

[janci_kp]

Alright. I still feel like this is a non-issue but I can agree to tone town the effect a bit... See if you like this better: https://docs.google.com/spreadsheets/d/ ... 5WKzE/copy

I think this is much better.

[yinlad]

I must confess I forgot to include my ride height adjust file on my submission and have uploaded a new version this morning including that, with no changes in geometry to the “on time” submission. I am happy to burn my late submission ticket on this if that is an acceptable trade for a missed text file that arrived 8 hours late?

[LVDH]

Here are the files, I have received:

2026 Full Car Assembly.SLDASM
CAEdevice_Race01_Sub03.zip
EaJRacing_01_07.zip
HermesMotorsport_01_01.zip
JJR Racing_round1_v1.zip
Koldskaal_rd1_v1.zip
maxtaylor_01_01.zip
Panthera_R01_V3.zip
PurePowerRacing_miami_50.zip
Variante_Miami_V01.zip



DK_Racing (2).txt
extension requiest.txt
Kostov Racing extention requiest.txt
RustedGP_Round1.txt


There are two funny ones:
There is nothing, I can do with this one: 2026 Full Car Assembly.SLDASM. Please keep in mind that there are rules about name format and also file format. This one seems to ignore them all.
This one is also pretty funny: extension requiest.txt. The file name does not contain a team name and the file itself is just empty. So again, there is not much I can do with this one.

I must confess I forgot to include my ride height adjust file on my submission and have uploaded a new version this morning including that, with no changes in geometry to the “on time” submission. I am happy to burn my late submission ticket on this if that is an acceptable trade for a missed text file that arrived 8 hours late?

I will figure something out. The only thing I know right away, is that I cannot accept late "late submission" requests.


Other than that, it seems that GRaph did not submit a car, so we will have somebody else on top for once. I hope you guys did a good job for the first race.
It might be JJR, as he is back. Welcome back!

[CAEdevice]

Here is my challenger for the first round:
https://i.imgur.com/y5RrUhN.png
https://i.imgur.com/Q6yVFOn.png
https://i.imgur.com/nXAarpN.png
https://i.imgur.com/LTHeq1n.png
I went to the route of the "size zero" concept for this one since the rules are kinda similar to the pre- 2022 cars and the cooling is not strict as that era of MVRC. As said before, finding the right balance is very tricky. I had to unload the front wing massively for having a balanced car and i'm still not sure of the balance, it was touch and go on my simulations. I'm suprised no one is talking about the CoP calculations. I agree with the importance of the balance but i dont think it should be calculated how it is on the current sheet. Having CoP at 1.824 equals to 1 second slower lap compared to 1.825 feels illogical. If we are aimin to realistic cars we should also agree to have a realistic calculation system.

How many details! Good job!

[The Rusted One]

Im confused about the deadline time. If it's 04-05 24:00, is it basically 04-05 23:59 (06-05 23:59 with the extension)?
So I have around 27hrs to the extension deadline?

[Ft5fTL]

Alright. I still feel like this is a non-issue but I can agree to tone town the effect a bit... See if you like this better: https://docs.google.com/spreadsheets/d/ ... 5WKzE/copy

Maybe some gradual scaling on performance hit would be better but the latest one is much better than what we had. Thanks for listening the feedback.

How many details! Good job!

Thanks, lets see how will it perform compared to other cars.

[yinlad]

So I have around 27hrs to the extension deadline?

That is correct.

[Dimitris]

When will the new rules about bodywork curvature be published?

[variante]

Alright. I still feel like this is a non-issue but I can agree to tone town the effect a bit... See if you like this better: https://docs.google.com/spreadsheets/d/ ... 5WKzE/copy

It's better, but it's still not seamless. It really should be seamless.
Normal laptime jumps seem to be ∼0.004s for each millimeter of CoP, but the jumps rise to ∼0.090s going from 1.824m to 1.825m and from 1.875m to 1.876m.

A car with CD=1.000 CL=-3.000 and CoP=1.876 would be slower in the simulator than a car with CD=1.000 CL=-2.965 and CoP=-1.875. But it shouldn't be. It wouldn't be in real life. So it is an issue.

And again: if it's too complicated to implement properly, we're better off without flatline/plateau.

[spacehead3]

It really should be seamless.

I think this should be what you want: https://docs.google.com/spreadsheets/d/ ... E6IDk/copy

[The Rusted One]

Late to RAWE CEEK but this is my car. I was actually decently satisfied with the car for this race even though it's not the cleanest design of all time. But while rendering the car I realized I had accidently moved the bargeboard by somehow exactly 50mm while exporting the stl...so that'll be a slam dunk penalty or DSQ coming my way.
But anyway, the bargeboard looks like that because I tried to follow the FIA's 15°tangent rule in a cheeky way, but I quit halfway through.

[yinlad]

https://i.ibb.co/mVMLdY7M/untitled.png
https://i.ibb.co/60M8JTqT/untitled1.png

Late to RAWE CEEK but this is my car. I was actually decently satisfied with the car for this race even though it's not the cleanest design of all time. But while rendering the car I realized I had accidently moved the bargeboard by somehow exactly 50mm while exporting the stl...so that'll be a slam dunk penalty or DSQ coming my way.
But anyway, the bargeboard looks like that because I tried to follow the FIA's 15°tangent rule in a cheeky way, but I quit halfway through.

sounds like you may have developed them inside an old volume that was 50mm reward? Another good looking car though, this year is setting a new standard for modelling I think

[variante]

I think this should be what you want: https://docs.google.com/spreadsheets/d/ ... E6IDk/copy

Yeah, now it's nice and smooth. Thank you for the rapid fixes.

Anyway, official MVRC images are supposedly going to be released tomorrow. So i might as well reveal the car a day early. Here we go, in comparison with last year's car:






It's still a basic car, with design accents in 3 areas:
- around the front-wing, where i took advantage of the permissive endplate rules;
- around the floor-barge, where i imposed outwash where inwash was meant to be;
- around the rear-wing, where i used the 3rd airfoil allowed in a biplane configuration.

The overall performance is still underwhelming. I do not expect to do well in the 1st race, in Miami. But, for the moment, i'm more interested in seeing other people's take on the 2026 F1 regulations (*MVRC edition*). So far, all cars that have been revealed look solidly designed.

[Dimitris]

I think this should be what you want: https://docs.google.com/spreadsheets/d/ ... E6IDk/copy

Yeah, now it's nice and smooth. Thank you for the rapid fixes.

Anyway, official MVRC images are supposedly going to be released tomorrow. So i might as well reveal the car a day early. Here we go, in comparison with last year's car:

https://arcvstudio1.wordpress.com/wp-co ... iami-1.jpg
https://arcvstudio1.wordpress.com/wp-co ... iami-2.jpg
https://arcvstudio1.wordpress.com/wp-co ... iami-3.jpg
https://arcvstudio1.wordpress.com/wp-co ... iami-4.jpg

It's still a basic car, with design accents in 3 areas:
- around the front-wing, where i took advantage of the permissive endplate rules;
- around the floor-barge, where i imposed outwash where inwash was meant to be;
- around the rear-wing, where i used the 3rd airfoil allowed in a biplane configuration.

The overall performance is still underwhelming. I do not expect to do well in the 1st race, in Miami. But, for the moment, i'm more interested in seeing other people's take on the 2026 F1 regulations (*MVRC edition*). So far, all cars that have been revealed look solidly designed.

I had the same idea about the endplates. Great looking car!