Porsche 911 RSR 2.8L

Mantas, if you need i could have a performance update for original sdrenno’s version



if you are interested i can send it to you by pm (then you can copy the improvements on your version). We don’t want credit for it. already tested in online leagues

Sure, why not. Better performance, better feel of a car - more fun.

It is a little confusing, since I noticed your post in this page about fixes was from 2021 04 15. And also the Sderennos release/update available on workshop is from 2021 04 15, it says "Fixed Bug, Thanks to DJCruicky for the update". But if there are more improvements, then it is also great.
 
Hopefully will upload an update soon, tomorrow maybe, maybe a bit later.

- Fixed wrong tires being didplayed graphically
- Fixed cam file issue, there will be much less camera floating. Single screen users, use stabilize horizon off or low.
- Fixed icon errors of #84 and #108, thanks to 7bhp_Mk for noticing and providing files
- Adjusted players tire sizes
- Adjusted slicks and wide rear treaded tires response to road wetness
- Added AINegSuspForceMult parameter to fix weird AI suspension behavior
- Optimised gauges, now using smaller textures

Will have to work on adjusting AI tomorrow, because it is simply faster now. Also the car almost drives too well, IDK if to leave it at that. I think when tires were taller, they were a bit more playful, maybe will return them taller as an upgrade option. Although a car is still almost same, I am just very sensitive to differences.

If you have any suggestions, please say it. Maybe it is something that can be done quickly.
 
I might be updating. Here are few more things I have done:

- Adjusted tires to be a little more biting, sharper
- Included taller tires as option through upgrades
- AI should no longer include cars from sderenno mod
- Increased minimum rideheights

I still can't completely decide if I don't have tires a little too sharp. I think they are fine, could be just tiny bit on sharp side. I included taller tires, because I like the sensation with them more, although they will probably be slower on majority of tracks than smaller radius tires, and a little sharper less happy to slide. So perhaps it is good.

I just noticed rear wheels going through fenders model mesh again a little (with tall tires). But whatever, I think it is almost correct lol, as in this video, brilliant drive by Louis CK:
 
pls don't ignore me, but I am prepared to talk with myself.

Is there currently anything important going on with the car, any racing ?

I am considering small update next week. New treaded tires. I'll add 330hp engine. Small tweaks for chassis geometry. Small other changes to physics, nothing too significant. Slight changes to sound volume levels. I am thinking about looking through texturing and shading, maybe will find areas to improve. To me this car always looked somewhat wrong, and I just can't understand why, maybe it is too low, it is almost as is proportions of whole thing are off.

Any suggestions ? The cockpit camera sway is gentle enough ? Car drives well for you ?

About new treaded tires. I want car to drive a lot more like in video above, or like in this video (it is 911ST but it surely is modified in a way that it is a lot like RSR):

The main challenge I am experiencing with tires in rF2, and it seems to be common theme - I can't get them quite as much sensitive to high power accelerations. They always seem to take the power too easily. Even my W125 mod tires are probably bearing accelerations a little too easily. If you watch this Rohls onboard you can see how fun and vicious the contrasting grip is when accelerating on full power. And yes I do test with close to 0C temp and on wet 15-40% track, although in Loch Drummond, not in Nordschleife, thus road roughness parameters might be different, not to mention the track configuration being different. I am getting close, but rear end simply never feels sensitive enough to application of whole 330hp. And as I am getting closer, other dynamics seems to be getting a little compromised, loosing directness and precision, which I don't want to loose. I also do use close to somewhat realistic cold tire pressures around 200kpa, pressure of rears slightly higher than front.

somewhat offtopic:
It could be that it just can't be done. Years ago. Again, largely ignored I raised topic about how roughness parameters works incorrectly in wet conditions, as they should have inverted effect - smoother is better when dry, and worse when wet.

You can get some idea about roughness of road surface: https://www.tirestesting.com/tires-testing/objective-evaluation/objective-wet-condition
 
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Thanks for the mod and updates mantasisg

Any suggestions ?
Some small things. :D :-
* Aspect ratio of the cockpit mirrors, the reflection looks squashed (see video below). The virtual mirrors are fine but.
* If you crash and damage the car, the outside sunshade above the windshield becomes visible (see video below). This is due to a bug in rfactor 2 where the body mesh changes from single sided polygons to double sided polygons if you crash. See tmansteve thread-> here . Have to reload the track to get it back normal again.

 
Work goes on, sometimes tires comes fast, sometimes it takes a lot of trial and error. Still so much to learn.

Beginning to get something similar to what can be see nin that Walter Rohl driving onboard video above, I assume he is on Michelin TB15 there ? Could it be ? I think that tire should be included as somewhat "modern historics" tire.

Besides that I am also very tempted to try getting this, as it is just simply so beautiful:

I assume it would be with this engine:
https://www.mittelmotor.de/racing/de/1-1-motor/1-1-kurbelgehaeuse/68516/2-1-01093-neu-detail

Also obviously some good super nicely slip and grip balanced Goodyear slicks. Perhaps it is Goodyear Eagle Sports Car Special slicks.
 
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Perhaps will update the car today or tomorrow if will feel like that.

I did some things.

1. Redone inner windshield texturing and mapping, added soft dashboard reflection effect. It is always visible, it should be only when sun is shining towards it, but in rF2 inner windshields aren't shaded properly.
2. Realised that wheels were too much inwards. It was causing car to look so much off. The stated trackwidths found on internet specs sites aren't right, or they are referencing to different mounting points. I have widened tracks, and wheels are where they should, also obviously it does make car a bit more stable, and I think it is good change, somehow it also makes car more dynamic.
3. I was not planning to do anything with model. But while at inner windhsield, I have also applied PBR shaders to interior materials, it is decent improvement IMO, and it took little time, for amount of improvement.
4. Added juicy 380hp motor. It is alright. 380hp 417Nm at the crank, but I assumed transmission losses to be only 5%, as it is rear engine and rwd... and it is Porsche.
5. Added little bit more aerodynamic settings, so more downforce is possible to extract. Of course in total car still develops net amount of lift.
6. Added some more springs options, so you can have car to become stiffer, as you all like to do I know.
7. Improved geometry, longer rear semi-trailing arms. Lower steering arms, and more aligned rear toe links - less bumpsteererz.
8. More diff options.
9. Increased caster and more options.
10. Graphically raised by 2.5cm.
11. New treaded "classic low wall" tires.
12. New treaded and slick "modern classic tall wall" tires.
13. The base mod engine file is new also, as previous one wasn't really an rF2 engine file, I think. The throttle response feels a lot better.
14. Added few more radiator options, the 380hp motor needs more cooling.
15. Increased various sound volumes.

Just tested tires at Nordschleife with default setups, 330hp motor. Only more cambers for slick tires. One medium effort lap.
- Classic low treaded tire - 8mins.
- Classic low slick tire - 7mins 57s. It expands less, thus gives less top speed, but most importantly it has harder rubber and wears less.
- Modern classics treaded tall tire - 7 mins 46s. Tends to overheat if driven too intensely in too warm temperatures such as over 20C, even though it might be the right way to drive them.
- Modern classics slick tall tire - 7 mins 43s. Also a little less expanding and giving less top speed. Also harder tire and wears less than treaded tire.

Just a note. My cars usually has "full wet" "compound". It is not compound, it is just same tire as in front mounted on rear end.

@DJCruicky I have changed mirrors U scale through 3Dsimed, not complete fix, but should be better. Unfortunately don't know exactly how to disable the damage thing, the banner thing comes with body paint material, if there is a bug in rF2 that is going to just stay like this, could just drag inner windshield towards inside a little, so there would be at least no mesh going through.
 
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I noticed the updates has almost no recognition and cummulative downloads of my mods are either decreasing or stalling. I guess this is just how it is. Anyway, it was very interesting to keep pushing myself with physics of this car and all other cars I did, but past four months it was super taxing for me. I hope in one way or another the work is not meaningless.

With this vibe RSR 2.8 got updated to version 1.3. https://steamcommunity.com/sharedfiles/filedetails/?id=3355161527


I hope you can spot some physics in these stills too.
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Also one pretty nice new RL onboard video, 330hp:

I wish to do my own driving videos to display how car works in rF2 with various complectations, talk some points. But I don't know if I will ever do that. I have a hunch though that it is almost necessary. I have no experience at this, but looking at what is common in youtube, looks like you don't really need to put any effort other than to have something to say and be able to talk haha. And if you can do some minor editing, prepare few "cinematic" shots, you are pretty much hitting top standards.
 
cant wait to try it out tonight.
If you can talk as passionate and technical as you write, I think it could be a great youtube video about this car. And such a video will probably also inspire more to try it out for more than a few minutes.
 
Of course it is possible. But if you are asking if I am going to do that, then answer is no. At least not in this decade probably.
 
Of course it is possible. But if you are asking if I am going to do that, then answer is no. At least not in this decade probably.
If you could share your max-scene with the car I could help with that :) Could've done that myself but it seems there's some additional work with mapping needs to be done for windows before starting with animations plus I didn't get why does wiper has a different mesh for cockpit and exterior view.
 
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