Post: GT6 Game Physics Testing
04-30-2014, 09:03 PM #1
SiNiST3R
Samurai Poster
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GT6 Physics Testing & Analysis

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Lap Battles
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Here are some videos (I can only add 2 so Ill link post where videos are posted when I can)



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The following 9 users say thank you to SiNiST3R for this useful post:

Jounijkk, kazzbakkisback, nextgole, OdeFinn, P$ycho, policedu, q-k, turbo_nova2l, tyronekfc
05-02-2015, 06:54 PM #551
Just saw odefinn posted in ridox garage, ridox uploaded a replay for a car that that is used in the fitt hatch comp, the video of the lap would show them how to drive and tune ha ! he used same tune for online race, badass.

The following user thanked RocketScientist for this useful post:

SiNiST3R
05-02-2015, 07:11 PM #552
SiNiST3R
Samurai Poster
Originally posted by RocketScientist View Post
Just saw odefinn posted in ridox garage, ridox uploaded a replay for a car that that is used in the fitt hatch comp, the video of the lap would show them how to drive and tune ha ! he used same tune for online race, badass.


Ive told some in PM when this comp was first pointed out to me, that the Track with FF cars would make it interesting..

I find it interesting how both Ridox, OdeFiNN, and myself have ran 1:54 laps in our cars and no smoke while the Oh so Great FiTT tuners are all bitching about lighting up their drive wheels red smoking them around most of the track running slower than 1:54..... Who should be taking advice from who?!?!?!? FiTT tuners could really use a lil Ridox & OdeFiNN advice lol but instead they will enter cars that smoke around the track and even with zero tire wear in Arcade some of them have to pit/restart after a few laps because their tires are just too super heated..... That's FUCKED UP. Dolhause don't you think that's a problem with your tune, seems like a fucking problem to me, it burns through tires even with tire wear turned off DAMN that's fucked up... Is there nothing in your tuning guide to help with that


AHAHAHAHAHAHAHHAHAHAHAHAHAlololooololololololAHAHAHAHAHAHAHAHAHAHAHAAHAHAH


How well will those Smoke Machines hold up online racing with tire wear on??????????????? Easy, Fall on their Faces... Spinning entering pits lol having to pit multiple times vs the non smoke machines making them look stupid.

It also points out that the Old cars used to equalize the New cars is a bunch of bullshit. We got 3 new cars running 1:54's yet the Old versions of them are all over the place with pp and tires... The old cars are used to manipulate the comp...
05-02-2015, 07:14 PM #553
OdeFinn
Bounty hunter
@RocketScientist, that was a practise lap, first shot on Nordschleife ever with that car, good lap probably goes really close to 8 min.
And for online races, yes, I tune always online racing in my mind. Tune works well on other tire compounds too.. Smile

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SiNiST3R
05-02-2015, 11:10 PM #554
SiNiST3R
Samurai Poster
I hope buddy doesn't spoil it lol

Originally posted by coryclifford
I run 1.5" wider tires on the front, and they're harder than the rear. Imagine 9.5" wide RM on front, and 8" wide RS on back. Cause they are just like that. 500 lb front spring with no sway bar, 450 lb rear spring with a 22mm bar. Car weighs 1695 pounds full wet. Idea for the skinny softer rears is to get some heat for ultimate grip. But it's mostly loose outta control until things settle in.


This set up is very autocross. Parking Lot racing where the speeds never really get too high. Very technical and lotta twisties around cones. These FWD cars will often run a bit of toe out in the rear to get that tail out there easier. With his described set up I don't think he has camber plates he makes no mention of wheel angles. if he did have then I wouldn't be surprised with about 1-2deg neg camber up front and crazy 2.5 to 4.5 deg neg camber in the rear, Toe out both up front and in the rear, decent amount up front but very small amount in the rear what I would equal to about -0.05 deg rear toe. Front will depend on the akerman bar so its hard to say, each car needs to be felt out zeroed out you can say.. Civic tho, Im guessing about -0.25 to -0.50 deg.

His set up is mechanically giving more grip to his front and also more grip with wider tires, but he keeps it in check with softer rear tire compounds. Its lose like crazy until the rear tires heat up and the car settles in...

Take the same car for circuit racing and maybe add a really really thin bar up front, zero out the rear toe, less aggressive on the rear camber and rear sway (too aggressive on a set up like that makes it much more difficult to trail brake) I would keep a bit wider tires on the front but run the front and rear with the same compound. Maybe a slight increase to caster angle.

The theory behind the set up is heavy front light rear attack the weight transfer at the opposite end for grip on front wheel focus and increased rotation. Front wheel drive the softer springs and softer sway (or no sway) bar up front give the front more grip, The stiff rear springs and sway make for less grip, & because weight transfer is handled as a total meaning whatever WT the front axle cant resist is handled by the rear axle. The stiff Rear end is maxed fast kicking out while the soft front maintains grip to steer through the corner with the tail end following along. This gives grip focus to the front as the front wheels steer and accelerate the car while also being on the heaviest side. If we were to attack the weight directly we would have stiffer springs where there is more weight and generate a car that under steers a lot with a heavy front.

Many of the 90's Gen FWD cars use Mac Pherson front struts with a multi link rear end on coil springs. A great way to set the springs up for performance when pushed but timid when not is to use progressive rear springs, so that when pushed they stiffen up but rather soft when not pushing it, BUT run Linear up front using the progressive rears to alter handling when pushed. More performance stiffer rear spring when pushed and more balanced when not being pushed. The multi link may confuse people with my statement as the spring rates on many of these cars look F>R on the low side but F=R on the high side, but the multi link set up vs the 1 to 1 MacPherson front end leverage factor turns that into more like F=R when not being pushed but F<R when being pushed because in FF cars a F<R set up is performance oriented for rotation... Without paying any real attention to his model Civic or whatever, I can say with confidence His SR set up of 500/450 F/R is more like F<R as far as stiffness after leverage.

A great example is the ITR, that uses this type of set up (MacPherson Strut up front with a multi link rear end on coil springs, running linear front and progressive rears the car will actually rotate more the harder you push it up to its limit obviously. IF both the front and rear were progressive and stiffness were F=R at all time then the car would under steer all the time as it would on a linear front and rear set up that's F=R....


Ifs funny how the bunch will like his post at GTP but cant tell you exactly why aside from a pic of his car in an auto cross. He also highlights a key point in TT or Auto-X vs Circuit Racing. His set up running softer compounds up front vs rear being crazy lose until it settles in is indicative of somebody Hot Lapping, the word HoT in the term is not about crazy hot fast, but hot tires. When a Fast single lap is the target we do Hot and Cold laps, the cold laps consist of us getting the tires optimum to start a Hot lap. Heating them up leaving the pits or cooling them down after a Hot Lap.


Circuit Racing we don't have the luxury of Cold Laps we race the whole race hot unless nursing a crazy lead and we don't have too. Certainly not if in 2nd or 3rd or 4th etc chasing a lead. The cars are set up a bit different considering the circumstances they will be driven in.. Tires are only cool leaving the pits but that's not a problem with tire warmers...

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OdeFinn
05-03-2015, 03:49 AM #555
OdeFinn
Bounty hunter
@SiNiST3R, good collation of suspension info, you may like my X/Z- pair of Hondas, tuned for real track racing, but balance is so prefect at if you change one click on springs/dampers/ARB you'll get any desired body movement, loose rear if that's wanted etc, that guy on GTP would like that.. Maybe I'll put some "quick instructions guide" along tune.
I played during tuning that on CRX a lot, made it behave as my own was, throwing thru corners sliding like RWD car.. I didn't kill that Honda's excellent feature on my tune, reduced bit, but it's still there, you can throw it sliding thru corner, both Hondas Smile
I don't mind what FITT testers say about car, but I'm totally loving it, Honda what feels track tuned, but still Honda, bit go-kart feeling what is totally normal on stiffer suspension Honda.
CR-Z is done, CR-X nearly, maybe not fastest, but it's not scratching paint on walls:

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SiNiST3R
05-03-2015, 08:43 AM #556
Jounijkk
Do a barrel roll!
Nice video. Very smooth driving.

Where is the setup?

This video reminds me about the basic rules of driving:
Easiest way to get better lap times is using Your head, more specific - eyes, witch are the most important tool for better lap times. Most common mistake is that You are looking too close. Look far, the car goes automatically in the fastest line if You look far enough. Everyone who has done racing, knows that. I have a feeling that ode has done some racing before, car goes so nice.

Jounijkk
05-03-2015, 11:26 AM #557
OdeFinn
Bounty hunter
@Jounijkk, thanks, tune will go to GTP, maybe link here?
But not yet published, bit polishing may come to that tune, and coz I'm not mainstream tuner I'll have to keep some embargo on my tunes, waiting closer to competition end.. Winky Winky lol
05-03-2015, 12:09 PM #558
Jounijkk
Do a barrel roll!
Link is good idea, if it's ok for Sinist3r.

Im curious to see what is Your approach to the relationship between suspension part and lsd. I think There I something I can use in the future.

What competition are You talking about? I don't follow forums very much, so I don't know things what are happening. I just race, enjoy about game and try to improve myself as a driver. But I'm very happy there are people who know so much about tuning, who have deep knowledge and who are willing to share their wisdom to average drivers in this game community. Different tunings are difficult to compare because driving styles are so different ( as You know, someone loves mother and someone loves daughter ), but there could be found some useful ideas.

Jounijkk
05-03-2015, 12:27 PM #559
OdeFinn
Bounty hunter
@Jounijkk, FITT tuning competition on GTP, tuning period is till Wednesday 13 May, probably publishing on Monday or Tuesday before it.

Whole idea is coming from sharing information, let's see how this information will go.

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