Author Topic: Skippy setups  (Read 7639 times)

[SJ]Jarkko Rantajoki

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Skippy setups
« on: August 11, 2008, 11:00:15 pm »
Heres one from me, on my second race running 2.12-2.13 racepace, tires are pretty ok to the end also. Oh yeah, please dont spam this topic, just post setups that you find good. Also if you have great setups for some other cars feel free to post a topic in the correct sub forums.
« Last Edit: August 11, 2008, 11:22:44 pm by [SJ]Jarkko Rantajoki »

[SJ]linklemming

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Re: Skippy setups
« Reply #1 on: August 12, 2008, 02:52:34 am »
Where how do you save these.  I search for *.sto files and none show up.  Are they stored at iracing instead of on my machine??

Gary

[SJ]Jett

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Re: Skippy setups
« Reply #2 on: August 12, 2008, 03:44:34 am »
go to MyDocuments...look for iRacing folder. There inside that folder you should see each car folder. Thats where they go.


[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #3 on: August 12, 2008, 05:24:22 am »
Loosened the rear ARB with one extra click and managed PB of 2.12,0 and Time trial result 2.12,5.
It needs to be "driven" bit more as it doesnt wanna turn as much but i feel i can take the last turn better with it like that.

[SJ]linklemming

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Re: Skippy setups
« Reply #4 on: August 12, 2008, 06:08:43 am »
Interesting setup compared to what I was using, same BB, ARB at 4 and spring perches at 10 (minimum ride height).  Compared to your setup it was scary twitchy and I couldnt catch any spin that occured and turn entry while braking was scary.  That being said, I felt like it had more exit speed stability and defnately seemed faster down the back straight.

Seem to get same times(2:14.4) with either setup, me thinks what I am losing with my twitchy setup in the corners I am gaining on the straight even though I have to exit at the oak tree really slowly.

Your setup is definately more relaxing, especially in a pack...and actually quite tossable, will see how it feels in race.

Might try my setup and full soft ARB tomorrow just for kicks if the speed advantage I saw last night on the back straight goes away with your setup.

Noticed something interesting tonight, the steering is alot lighter with the front all the way down.  Seems counterintuitive, perhaps the extreme camber has less steering feedback.  Suprisingly front/rear weight doesnt change with the perches at max/min...I would expect something....bug perhaps.

Hopefully you dont consider this spam :)

Gary

[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #5 on: August 12, 2008, 06:25:03 am »
Hmm i have one bit more twitchy setup too, maybe that one has more straight speed.. gotta try if i can now toss that around the track after learning the track. I really wanna break into racepace of 2.11s

EDIT:Nah looks like im gonna stick to my own, so much better to toss it around. Just need some more laps to break into 2.11s
« Last Edit: August 12, 2008, 06:51:02 am by [SJ]Jarkko Rantajoki »

Hawkeye

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Re: Skippy setups
« Reply #6 on: August 12, 2008, 12:17:21 pm »
This setup feels like it was made for me. After 3 laps I set my PB even that was a slow 2:15.085 I see I can easily hit 2:14 with this set up. Not sure what you did different on this set but it drives smooth as glass. Thanks for posting it.

[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #7 on: August 12, 2008, 05:11:19 pm »
Yeah definitely softening the ARB bit more is the way to go, 2.11,5 in qualify. :)

[SJ]linklemming

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Re: Skippy setups
« Reply #8 on: August 13, 2008, 01:02:06 am »
Jarkko,

Congrats on the time, now go get Huttu thumbs up

I would be curious as to your thought process while doing this setup...i.e. why you changed what.

I have been researching this on the iRacing forums and it really kind of scattered and unclear.

I did record car parameters for all spring perch offsets and all I saw was ride height and camber changes ,no weight balance change and a small amount of caster change.

I would just prefer to have a method I can do/understand rather that just using your setups (which seem good).

Gary

[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #9 on: August 13, 2008, 04:52:14 am »
Jarkko,

Congrats on the time, now go get Huttu thumbs up

I would be curious as to your thought process while doing this setup...i.e. why you changed what.

I have been researching this on the iRacing forums and it really kind of scattered and unclear.

I did record car parameters for all spring perch offsets and all I saw was ride height and camber changes ,no weight balance change and a small amount of caster change.

I would just prefer to have a method I can do/understand rather that just using your setups (which seem good).

Gary


My thoughts when i started adjusting the car:
Feck poo and arse, this bastard snap oversteers and takes too long to grab it back, way too edgy out of/in to the corners.
needed more grip on fast corners
=>
Im wanted it bit higher (assumably longer spring travel making it softer also?) so i adjusted spring offset, getting it up a little,
then softened rear ARB little bit to gain more grip on rear.
Its hardly rocket science.. i just think what i need the car to do, then try to think how to achieve it.
Dont have too much technical knolidge, its more spinal feeling and knowing some basic things about setups.

[SJ]linklemming

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Re: Skippy setups
« Reply #10 on: August 13, 2008, 02:08:57 pm »
From what I have read so far, the spring perch offset doesnt affect spring rate, only ride height although thats debatable until iRacing releases their setup guide.

Drove your setup online last night and it seemed to suffer from more exit oversteer and not sure why, perhaps the added stability under braking has me braking to late...causing problems.  I did however do my best time in race and consider how tired I was, that was an accomplishment.

The car was definately slower down the straight, where I used to gain 2-4 car lengths, now I am just even with everyone.

Will try a dropped front tonight and soft ARB and see if that works for me, dont really see the need for alot of suspension travel on this track unless you are jumping curbs and the long straights reward aero advantages.

Gary

[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #11 on: August 13, 2008, 03:05:53 pm »
From what I have read so far, the spring perch offset doesnt affect spring rate, only ride height although thats debatable until iRacing releases their setup guide.

Drove your setup online last night and it seemed to suffer from more exit oversteer and not sure why, perhaps the added stability under braking has me braking to late...causing problems.  I did however do my best time in race and consider how tired I was, that was an accomplishment.

The car was definately slower down the straight, where I used to gain 2-4 car lengths, now I am just even with everyone.

Will try a dropped front tonight and soft ARB and see if that works for me, dont really see the need for alot of suspension travel on this track unless you are jumping curbs and the long straights reward aero advantages.

Gary


You definitely need to jump curbs if you want a fast lap, almost every single one of em, actually. :)
Really need to be aggressive with the setup, if you are late in a corner its not very good, i usually toss it in reasonably early.

[SJ]linklemming

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Re: Skippy setups
« Reply #12 on: August 16, 2008, 04:20:08 pm »
Decided to do some research on the Skippy and the setup parameters available.

While it is generally accepted that raising the front increases understeer and lowering it increaes oversteer it bugged my that nobody could say why.  I figured it was the camber differences and change in static loading.  The Setup menu showed no change in loading so I was confused.

Did some reading in the "Going Faster" book by mr barber himself and found the answers.

1.) Changing the ride height at just 1 corner changes the static loading on all corners.
2.) Changing the ride height at 2 corners at the same end of the car does not change static loading.
3.) Lowering the front lowers the roll center which makes the car less resistant to rolling, effectively
      softening the front and adding grip at the front.
4.) Raising the front raises the roll center which makes the car more resistant to rolling, effectively
      stiffening the front and reducing grip at the front.

And then my observations(some VERY obvious):

Lowering:
    - Adds negative camber which will add front grip (usually) but could reduce braking due to less
      contact
    - Reduces Aero drag

Raising:
    - Just the opposite of lowering :biggrin:

Here is a summary of parameters vs front ride height:

Perch Offset       F Ride Height       F Camber        F Caster
      -10                     3.63                    -1.6                 5.5
       -5                      3.24                    -2.1                 5.3
        0                      2.85                    -2.6                 5.0
        5                      2.45                    -3.1                 4.8
       10                     2.06                    -3.6                 4.5

Lastly, we all know what changing the rear ARB does but I have seen mention by many that stiffening it adds high speed stability so see what works for ya.

Gary


[SJ]linklemming

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Re: Skippy setups
« Reply #13 on: August 16, 2008, 04:25:13 pm »
From what I have read so far, the spring perch offset doesnt affect spring rate, only ride height although thats debatable until iRacing releases their setup guide.

Drove your setup online last night and it seemed to suffer from more exit oversteer and not sure why, perhaps the added stability under braking has me braking to late...causing problems.  I did however do my best time in race and consider how tired I was, that was an accomplishment.

The car was definately slower down the straight, where I used to gain 2-4 car lengths, now I am just even with everyone.

Will try a dropped front tonight and soft ARB and see if that works for me, dont really see the need for alot of suspension travel on this track unless you are jumping curbs and the long straights reward aero advantages.

Gary


You definitely need to jump curbs if you want a fast lap, almost every single one of em, actually. :)
Really need to be aggressive with the setup, if you are late in a corner its not very good, i usually toss it in reasonably early.


I am riding curbs pretty much all the way from T4 to the oak tree, not doing it yet coming down the hill after the back straight or T1-T3.

Just had a gander at Huttus setup and he is running perch offset of -2...me thinks he is using lots of curb lol

Gary

[SJ]Jarkko Rantajoki

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Re: Skippy setups
« Reply #14 on: August 16, 2008, 05:09:50 pm »
lol nice

My racepace is now mid to high 2.11s
Tracks gonna change though, need to start practice for the next one.

[SJ]linklemming

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Re: Skippy setups
« Reply #15 on: August 18, 2008, 12:19:26 am »
Anybody care to share their summit setup?

Spent 30 minutes on the track and only saw a mid 1:24 with a stock setup, tried a Huttu setup as well bit it had the front dropped all the way down which seemed weird to me because of how much bumpier this track is.

Setup with this car/game is a mystery to me, in GTL I got it so wired I can change 5 things at once and get it.

Gary

Marcus

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Re: Skippy setups
« Reply #16 on: August 18, 2008, 12:34:58 am »