Nurburgring + Koenigsegg = death. (Need help tuning)

paskowitz · 16 December 08, 01:00

I can get in the low 8s easily but a clean lap only comes every 5+ tries and it is just really hard to keep this car under control. Any ideas on setups to help control the massive oversteer? Also the bumps on the Green Hell really upset the Koen. Any way to fix this? Thanks for the help.

darock · 16 December 08, 12:01

The massive oversteer is on exit, right.

Adjust your gearbox. The lower gears provide way too much torque multiplication. Which is what gearing does, multiplies the engine torque. And if you can't use it, you don't need it. Everyone understands setting top gear to match the longest straight, but few realize how important it is to do the same on the other end of the gear train.

The default gearbox starts with 1st gear of 7.875. Dial that to a lot lower number. Then even out the gear ratios from 2nd up to 6th. Try the car out on a standing start to make sure you can still spin the tires. You can soften 1st as far as the gearing options will allow and not hurt performance until the sucker won't burn rubber on a standing start. You're basically matching the gearbox to the intended use.

Differentials wound up in race cars to tame the beasts. Use yours. Dial the Power side of the differential up. Many of the powerful cars run 100% and it's not enough.

Set your Slow Damper settings to let the weight transfer to the rear as soon as possible on acceleration. Lighten the front rebound and the rear bump. That way the shocks will allow the weight transfer as soon as possible.

Bumps are a problem? Check out the thread about dampers that's active right now.

My advice is guaranteed: If you are not satisfied with my advice, there is no additional charge.

Spad · 16 December 08, 12:34

Just to correct you Darock....

Only kidding

Another thing about this track to is the wings...

Get them high becuase most of the track is corners. You can offest slower speeds on the straight by better quicker cornering. Be carefull of the rear wing tho becuase to high speed it will induce under-steer in high speed corners.

Also try running a medium to hight pre-load and also try running the coast side a tad higher... say anything 50+. That may give the car a more planted feeling under braking and on corner entry!

Darock for me the Diff was the most challenging thing to figure out and learn how to use. It's also a nightmare trying to find good easily understandable description of it for my brain to absorb!

pitradio · 16 December 08, 12:37

Quote:

Originally Posted by Spad

Just to correct you Darock....

Only kidding

Another thing about this track to is the wings...

Get them high becuase most of the track is corners. You can offest slower speeds on the straight by better quicker cornering. Be carefull of the rear wing tho becuase to high and it will induce under-steer in high speed corners.

Also try running a medium to hight pre-load and also try running the coast side a tad higher... say anything 50+. That may give the car a more planted feeling under braking and on corner entry!

Darock for me the Diff was the most challenging thing to figure out and learn how to use. It's also a nightmare trying to find good easily understandable description of it for my brain to absorb!

Not my advice..
I'd suggest to put wing and splitter low.

The gain you get on the straights is enormous, and once you know the corners well you'll be faster with a low wing and splitter setup.

Spad · 16 December 08, 13:01

Quote:

Originally Posted by pitradio

Not my advice..
I'd suggest to put wing and splitter low.

The gain you get on the straights is enormous, and once you know the corners well you'll be faster with a low wing and splitter setup.

Most of Nordschleife is cornering, its what 13 miles or something and 180 somet corners? Only a small part of it by comparison is long open straights and that equates to higher wing settings. The car will feel more planted thru the corners and the offset against slower speed is minimal at best. You may loose 5mph to 10mph maybe a tad more along the straights but you can possibly gain more with higher wings and a well balanced car in the corners over the entire lap.

Look at these images. One is of the BMW Sauber at Nordschleife...

and the other at Monza a low down force circuit which is predominantly straights...

The Sauber at Monza is running less wing angle both front and more so on the rear than the one at Nordshcliefe! It's exactly the same for a GT car.

Cornering is what is important at Norschleife becuase any one can drive fast in a straight line. The real key is getting the speed thru the corners!

paskowitz · 16 December 08, 13:37

I am talking about the road car which has no DF settings. The race car I have no trouble with. When I go over the first crest (after the 11th corner I think) the CCX looses all traction and basically goes air born. Then when I try and brake the car lunges forward off the crest and is just as uncontrollable. This is the type of car that you can be careful with and it will still kill you. I think it is harder than the Viper just because it is so much faster.

I do not think the gearbox is adjustable either so... all I can fiddle with is the suspension settings. Anyways I will try what you guys said.

Spad · 16 December 08, 13:42

ROFL.... Sorry thought you meant the CCGT!

That cars is a smegging nightmare to drive! I tried it round there and spent more time mowing grass and ramming the armcove!

In that case get into the "slow in fast out" mentality. Get on the brakes a lot sooner than you would and then use the power on the exit to balance the power over-steer. This way the car will be more settled and you will have less weight going forward to quick on corner entry. Like Darock said you need to change the weight transfer with the Dampers.

Have a look at this and also print it out coz its a bitch to remember.

It's great for dialling the dampers in to stop over/under steer on corner entry and exit!

paskowitz · 16 December 08, 13:55

I can change that stuff mid race? Sorry I am a little new to the whole PC racing sim world. I used to only play Gran Turismo but now my time is spent 50/50. I know the whole slow is smooth, smooth is fast motto. It is just the Koenigsegg does not care. On tracks like Valencia it is not too bad to handle but something about the Nurburgring really unsettles that car. I have more problems with oversteer from bumps than say exiting corners.

Also on a side note, I have been wondering what are the most realistic setting for force feedback on the G25? I used to have everything at 150% and max everything but that was WAY too crazy. What setting do you recommend.

Anyways thanks for the tips.

Spad · 16 December 08, 16:28

I run my FFB settings quite high. I like to have a stiff wheel so I can minimise movement and it helps me to also notice when I am loosing grip on the front due to under-steer!

I could send you my control set file and you could give that a go? I would post the settings here but I don't know what I am looking for...

16 December 08, 01:00	#1
paskowitz Join Date: Sep 2008	Nurburgring + Koenigsegg = death. (Need help tuning) I can get in the low 8s easily but a clean lap only comes every 5+ tries and it is just really hard to keep this car under control. Any ideas on setups to help control the massive oversteer? Also the bumps on the Green Hell really upset the Koen. Any way to fix this? Thanks for the help.

16 December 08, 12:34	#3
Spad Long Haired Bum Join Date: Oct 2006 Location: Buxton, UK Age: 42	Just to correct you Darock.... Only kidding Another thing about this track to is the wings... Get them high becuase most of the track is corners. You can offest slower speeds on the straight by better quicker cornering. Be carefull of the rear wing tho becuase to high speed it will induce under-steer in high speed corners. Also try running a medium to hight pre-load and also try running the coast side a tad higher... say anything 50+. That may give the car a more planted feeling under braking and on corner entry! Darock for me the Diff was the most challenging thing to figure out and learn how to use. It's also a nightmare trying to find good easily understandable description of it for my brain to absorb! Last edited by Spad; 16 December 08 at 13:35.

16 December 08, 12:01	#2
darock Moderator Join Date: Nov 2006 Location: North Carolina	The massive oversteer is on exit, right. Adjust your gearbox. The lower gears provide way too much torque multiplication. Which is what gearing does, multiplies the engine torque. And if you can't use it, you don't need it. Everyone understands setting top gear to match the longest straight, but few realize how important it is to do the same on the other end of the gear train. The default gearbox starts with 1st gear of 7.875. Dial that to a lot lower number. Then even out the gear ratios from 2nd up to 6th. Try the car out on a standing start to make sure you can still spin the tires. You can soften 1st as far as the gearing options will allow and not hurt performance until the sucker won't burn rubber on a standing start. You're basically matching the gearbox to the intended use. Differentials wound up in race cars to tame the beasts. Use yours. Dial the Power side of the differential up. Many of the powerful cars run 100% and it's not enough. Set your Slow Damper settings to let the weight transfer to the rear as soon as possible on acceleration. Lighten the front rebound and the rear bump. That way the shocks will allow the weight transfer as soon as possible. Bumps are a problem? Check out the thread about dampers that's active right now. My advice is guaranteed: If you are not satisfied with my advice, there is no additional charge.

16 December 08, 13:37	#6
paskowitz Join Date: Sep 2008	I am talking about the road car which has no DF settings. The race car I have no trouble with. When I go over the first crest (after the 11th corner I think) the CCX looses all traction and basically goes air born. Then when I try and brake the car lunges forward off the crest and is just as uncontrollable. This is the type of car that you can be careful with and it will still kill you. I think it is harder than the Viper just because it is so much faster. I do not think the gearbox is adjustable either so... all I can fiddle with is the suspension settings. Anyways I will try what you guys said.

16 December 08, 13:42	#7
Spad Long Haired Bum Join Date: Oct 2006 Location: Buxton, UK Age: 42	ROFL.... Sorry thought you meant the CCGT! That cars is a smegging nightmare to drive! I tried it round there and spent more time mowing grass and ramming the armcove! In that case get into the "slow in fast out" mentality. Get on the brakes a lot sooner than you would and then use the power on the exit to balance the power over-steer. This way the car will be more settled and you will have less weight going forward to quick on corner entry. Like Darock said you need to change the weight transfer with the Dampers. Have a look at this and also print it out coz its a bitch to remember. It's great for dialling the dampers in to stop over/under steer on corner entry and exit!

16 December 08, 13:55	#8
paskowitz Join Date: Sep 2008	I can change that stuff mid race? Sorry I am a little new to the whole PC racing sim world. I used to only play Gran Turismo but now my time is spent 50/50. I know the whole slow is smooth, smooth is fast motto. It is just the Koenigsegg does not care. On tracks like Valencia it is not too bad to handle but something about the Nurburgring really unsettles that car. I have more problems with oversteer from bumps than say exiting corners. Also on a side note, I have been wondering what are the most realistic setting for force feedback on the G25? I used to have everything at 150% and max everything but that was WAY too crazy. What setting do you recommend. Anyways thanks for the tips.

16 December 08, 16:28	#9
Spad Long Haired Bum Join Date: Oct 2006 Location: Buxton, UK Age: 42	I run my FFB settings quite high. I like to have a stiff wheel so I can minimise movement and it helps me to also notice when I am loosing grip on the front due to under-steer! I could send you my control set file and you could give that a go? I would post the settings here but I don't know what I am looking for...