Raptor Live Tune - RUF Yellow Bird '87

FishHunters
You got the specs on your tune with RS tires? I could "hopefully" back track from there. Raising the rear height? I'll give it a shot, but isn't that backwards to the way it should work?
Click to expand...

I made some minor changes yesterday and right now it's like this (Shelby Cobra 427 '66, no oil change, 550pp, 500hp 903kg):

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Ride height: 90/105
Springs: 9.50/10.30
Compression: 6/7
Extension: 7/7
Anti-roll bars: 2/3
Camber: 0/0
Toe: -0.10/0.05
Brakes: Racing brakes, 2/2

Custom transmission: 2.700, 1.969, 1.466, 1.128, 0.882, final gear 2.955

Triple clutch, carbon driveshaft, LSD: 10/15/7

Engine: racing exhaust, sports catalytic converter, power limiter to 90%

Body: stage 3 weight reduction, carbon hood, 1 kg ballast
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The ride height as far as I know does work backwards as it should, raising rear provides more rear stability and viceversa. Camber is at 0/0 because all I feel it does is to reduce grip.
First gear is for a standing start with no tyre wear, you'll get wheelspin on full throttle with tyre wear on. Since first gear is already almost at the left end of the slider, you'll have to lower the final gear setting to adjust it to tyre wear, and make the other gears a little shorter to get the same top speed.
Finally, if you plan on using nitrous you have to set the power limiter at 100%, otherwise nitrous will have no effect at all, so you'll have to adjust engine parts and ballast to get 550pp, and tweak the transmission a little for the standing start and the increased top speed.

Hope it helps.
 
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Thanks man! Is that a long 1st gear? Looks like it. Can you send your race file via the PS3? FLsurffisher is my PSN. Thanks again!
 
FishHunters
Thanks man! Is that a long 1st gear? Looks like it. Can you send your race file via the PS3? FLsurffisher is my PSN. Thanks again!
Click to expand...


I tried to but I don't know how to do it, it would only let me attach pictures to the message. I PM'd you a download link so you can copy it to a pendrive and then to your PS3.
 
Ok! Serious progress has been made. Bought a new one and started from scratch. Used info from you guys. Lowered the car first back to the 70's. Found that increased my oversteer. Raised it real high also made the back end higher than the front. Found that increased understeer too much. Wasn't able to get around the 1st corner well. Lowered the car back down to 80/85 which I believe is close to perfect. It will probably need to go up a few more clicks.

Used Hami's LSD Guide (Hami you really should copy and paste that to GT6, please). Right now it's set to 25/8/20. With that setting I'm getting off almost all the corners with no red tires. There are about 3-4 corners (Nurb GP/F track) where I believe it's more inertia (corner ENTRY) that I get red on the outside tires (discovered I can set the instrument display in replay. Helps me see exactly what happened while I was driving). Trying to figure out how to handle that CORNER ENTRY Red. Usually it's while going down hill on a sharp turn. Pretty sure I'm not carrying too much speed. My brakes are racing brakes set 7/5. I like coming in hot, hitting the brakes then turning the wheel over. Got my time down from 2:15.3 to 2:13.1. This car can go lower. Haven't messed with anything else. No Springs, Camber, Dampers yet.

Right now the PP is 525 and HP is 501. Want to keep it there. That's where it was after the oil change. Trying to keep ALL the cars close to their natural PP/HP.

Input is most welcome!
 
Ok. So what is happenening here. Turning into a corner having already braked/braking my two outside tires are going red. The weight transfer is causing the car to slide, wheels to lose grip. First throught is to adjust the Decel. 2nd thought is the ride needs to be either hardened or softened. Gotta wait til tomorrow beforee I can start tinkering again.

Finally, ran the Ring with several off road slips from the weight transfer. Time was 8:26. Under 8 is definitely possible and maybe as low as 7:30.

A little bit more about the car. Its strenght lies in it's lightning acceleration and power up through the gears. On the first straight on Nurb GP/F it is blowing away the ghost replays of both the Tuscan Speed 6 and BMW M3 CL. The turns had been where they were catching up. The car has the capability to "crush" the times of both those cars. And that's where I want to get it.
 
If you want less weigth transfert left/rigth, -1 or -2 on both roll bars...

If you want less weigth transfert front / rear, try cross bumper like 5 / 3 front, 10 / 5 rear

Thèse are all the settings you need to control the weigth transfert, if spring / rh are allready ok.
 
2:12.953 - Another break-through! Adjusted the Decel down to 15 that still needs alittle work but it's better then being at 25. Still couldn't really "PUSH" the car through the turns. Adjusted the roll bar to 7/5. That fell stiff. Was taking the turns wider. Backed it down to 5/3 and increased spring rate to 10/7. My laps are now consistent within .2 and I can push the car hard. Definitely in the ballpark. Need to keep testing and keep tweaking. Ran the car this morning online. At Apricot Hill put up a 1:29 and that was the fastest lap during practice!
 
Most of the turns Im yellow on outside front tire. One turn im red on both outside. A couple turns Im red outside front.

Feel like I need to go up on something and down on something else within the suspension but not sure what yet. Gotta think about it.

This I do know. I use the fastest lap as a ghost lap. And coming out of the last turn to the first turn I'm even every time now. Unless I mess with the gearing that's as good as it will get. Not too concerned because it is the strength of the car. Acceleration. Watched a Video of Shelby comparing the '65 with the brand new Snake. The Cobra beat the Snake in a race with corners. Lost the drag by just .1 The Cobra is 550hp. The snake is 750hp.
 
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Current Settings:
RH 80/85
SR 10/7
Com 3/3
Ext 4/4
RB 5/3
CA 0/0
Toe 0/.2

LSD
Initial 30
Accel 7
Dec 10

Triple plate added
SS tires
525 PP
501 HP

Will think on it the next day and a half and work on it again first of the week.

For Comparision: Claudiorz

Ride height: 90/105
Springs: 9.50/10.30
Compression: 6/7
Extension: 7/7
Anti-roll bars: 2/3
Camber: 0/0
Toe: -0.10/0.05
Brakes: Racing brakes, 2/2
 
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Thinking to myself what does it need...needs to be tightenend up alittle. Going to go up a tick on Roll and down a tick and a half on springs with that may need to up Com & Ext on Dampers a tick or two. If that doesn't work, I'll go the other way with it. Close. Just needs a little tightening.
 
Changed the settings.
RH 87/83
SR 12/7
COM 5/3
EXT 7/4
ARB 5/3
CA 0/0
TOE 0/.2

RBRAKES 6/ 5

Lsd
25-7-8

Felt this is more in line with best practices. And what it should be to achieve a desired result. Lap times are still consistent 2.11.8 to 2.12.9. Need that final bit of understanding. How does it "feel" now? Not quite sure. Concentrating on the Red and what's happening around the track. Still able to push the car. Just pushing a little differently than with the other set up. Now I've started to integrate the turns to be best on. Like a highspeed corner into a long straight. Track specific tune? Yes and no. I feel if a car can handle the Nurb GP/F it can handle ANY track including the Nordescleife and La Sarthe.
 
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2:11.055 - Went ahead and made Praiano's gearbox adjustment. Definitely a smoother take off and could tell was ahead of the ghost. Almost feels like it takes away the essence of the car. This car is about acceleration. That is different now. Then lowered the car even further 77/72 (60 is bottom). That was also a noticable difference. That's where it's going to stay. Just need to compensate with spring rate, roll bar, dampers. Planning on being done with this one today!
 
RUF Yellow Bird Tune

What a car! Great acceleration. Very powerful. However, doesn't want to roll. Stiff in the "hips". I knew RUFs were good cars. Gonna try and tune all of them.

Started this tune buy taking a one and getting it to 500pp. All the power components put would put it over 550. So I did the stage 3 weight reduction then added the low RPM turbo. That got me to about 552pp. Then I added 35kg of ballast. Since the car is rear heavy (46:54) I put the ballast forward. That made it 47:53. I then took it online and drove it with SFR & Traction at 5 to see what it could do. Track of course is Nurb GPF. Handling was awful best lap was 2:14+. Oversteer when power is applied. Sometimes both rear went red on me. Turn the wheel over to enter the turn and it would slide to the outside.

Then I went to work.

This has not been an easy tune. I've since gotten the handling better but it's still not ready for the RING itself. Still encountering some of the same issues but less pronounced. The lowest ride height is 60. Wanted to go with something around 70. Being very rear heavy I knew I wanted stiff fronts and soft rears. At 70 RH my fronts only went as high as 10. But my rears can go as high as 18+. The LSD has been an issue as well. There is nothing anywhere that I've seen that tells you how to handle both front tires going red on acceleration so it's been experimentation.

The LSD is currently at 15/12/35. That seems to have quieted down the outside spin. I'm still dealing with spin on the outside on turn in. Outside front tire to be exact. I'm thinking I need to adjust down the LSD accel one or two ticks. But I'm also thinking I need to stiffen the front springs a hair as well. Right now it's at 9.25 max 10. Dampers are 8 & 10 as well.

I've gotten the time down to 2:10.733. I believe this car needs to be in the 2:04-2:06 neighborhood. I've gotten a 500pp car around the track in 2:10+ It's a car that can also handle the RING very well.

I've also increased camber to 1/1. I believe I'll need to also adjust toe. The car isn't handling the Shumacker S very well yet and the long straight up to the barrier, on the turn it wants to shimmy. It also needs to be a tad tighter on the high speed turn.

At first with the heavy springs I thought the roll bars needed to be low to provide some roll (2). I've since increased them to 4/4 and that's when I started getting better times. I've also since flattened the car. Both front and rear are at 78/78 on Ride Height. That I believe has also helped the springs perform better.

I've run 3 laps and saved the video to analyze. Getting there. Just need to continue to figure it out. It's like a puzzle. A combination to be unlocked!
 
I may have unlocked a secret. Started the day by trying a tune someone else posted. Wasn't quite getting what I wanted out of the car. What I did discover from that tune was that a higher ride height seems to be what the car likes. So I reset the suspension to get to the natural height which was 120/120. Tried that out and found the car still had front handling issues. One problem with the way PD has set up this suspension: The rear is much heavier than the front, but on the springs I can only go up to 10.49 front. I think the front spring rate needs to be somewhere in the teens 13-15 maybe even higher. I also discovered the car does not like any added roll bars. Tried going up to 4 front, then 4 front and back, then 4 back. Each of those alternatives downgraded the handling.

What I feel is really working was lowering the back end. I went down on rear RH 120/115. That made a significant difference in handling. I posted the fastest lap time sofar 2:09.400. That was 1.333 seconds faster. Now I need to find the optimum RH and adjust everything around it. Again, I feel the car should get around the track in the 2:05 neighborhood. May be able to get back to it Monday afternoon.
 
Sooo, sooo close on this one guys. If you have any ideas or suggestions would love to hear 'em. Moved the roll bars down to 2/2 because I was getting a bit too much understeer. That's a bit too loose. I'm getting more red on the outside front on turn in. I've not "pushed, pushed" acceleration out because I'm not sure this car would EVER be able to handle that. But I have pushed it. Only on the next to last turn (S where the barrier is) on Nurb GP/F. Do I get any red and it's on the inside rear on acceleration. Correction on a prior post. I lowered the car to 125/120 and now I've brought it down to 120/115. Here is the tune as it's constituted now:

Sport Soft
550pp
526hp
wgt 1104 kg
dist 43:58
Weight reduction 3
35kg ballast at 0 position
Low RPM turbo & Triple clutch a

Brakes are 3/1
Power 100%

LSD 7/5/33

Suspension:
RH 120/115
SR 10/8.5
Damper (Com) 8/1
Damper (Ext) 10/3
RB - 2/2
Camber 0/0
Toe 0/.2

I know I have to do something with camber and toe because the car does not like the Shumacker S. Seems to shimmy through it. It's uphill and uneven.
 
GTlondoner
Already a lot of weight on the back, More than enough torque to have taller gearing and kill off a bit of wheel spin.
Click to expand...

Had 1st gear at 40% and have since backed it down to 25% which seems to have helped eliminate spin on a standing start.
 

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