ACR and other car launches. (INDY 1/4) :D

[180s]

Besides the ACR, certain cars I've seen in the dragging world launch very differently.

My tunes are above average, but not the best. The one thing that lets me down is my launch. No matter how I try, when I press the handbrake and rev any of my cars, they bounce extremely fast. But! The cars that I see launch bounce back very slowly, but jump in the air when released giving them a epic launch / run.

I've asked people all around lobby's how do I do it, but most tend to be not helpful. I don't want to leave the drag world, but It's hard competing against people with this launch. Hopefully I've made this clear, If I nail this launch technique who knows where I can go.

If you missed the title, this is for INDY 1/4

Thanks for reading, have a good day

 

[AKA I95]

try extendinyour launch gear to the point of almost bog or stall but, so if you extend it too much and it bogs then bring it back till it wont bog but it will pulls

 

[180s]

What do you mean by bog or stall? I just tried to put second all the way down, but made no difference. I launch okay, but its when I rev my car thats annoying. It just bounces rapidly.

 

[Simple Matt]

What do you mean by bog or stall? I just tried to put second all the way down, but made no difference. I launch okay, but its when I rev my car thats annoying. It just bounces rapidly.

Lol bro don't worry about that.. From what I can tell.. That doesn't make much difference.. If you don't like how it revs, e easier on the accelerator 👍

 

[180s]

It does lol, its the reason why I'm losing. I have tried but you see there pressing the accelerator on full, and it still bounces low, compared to when I do it it bounces fast. When i ease off and it bounces slow, my launch becomes horrible. It's confusing to discribe but people who have it will know exactly what I'm talking about.

 

[dr_slump]

No matter how I try, when I press the handbrake and rev any of my cars, they bounce extremely fast. But! The cars that I see launch bounce back very slowly, but jump in the air when released giving them a epic launch / run.

Please tell me that you're not talking about what happens when you hit the rev limiter.

But if I'm right, then.....

When you watch other cars (most people don't like it anyway), then it always shows incorrect datas. As example you're watching a guy and it looks like as if he's shifting at 7500rpm, but when you ask him afterwards, he'll probably disagree and say that he shifted at 8000. The spectators mode is inaccurate! The refresh rate seems to be terrible and it has always a delay.


EDIT: Of course, there are multiple launch techniques (I like the one which avoids bogging down), but they are usually not that great when dragging by tree. Cause they hurt your concentration and also need a little bit more time.

 

[180s]

I am and thanks for the input from both of you.

I know, but It's been bugging me. Okay, so let's assume spectator throws off maybe .500 extra rpm. These guys while holding handbrake and hitting rev limiter, bounce from lets say 8000 to 5000, then it goes back to 8000 and repeats, the launches they do are ehhhh to good.

 

[dr_slump]

I am and thanks for the input from both of you.

I know, but It's been bugging me. Okay, so let's assume spectator throws off maybe .500 extra rpm. These guys while holding handbrake and hitting rev limiter, bounce from lets say 8000 to 5000, then it goes back to 8000 and repeats, the launches they do are ehhhh to good.

Post your suspension, I could bet that the reason is not the rev bouncing story.

 

[AKA I95]

oh, you are talking about that ok, look, don't pay attention to that, spectator mode it's inaccurate. when you see that they are bouncing the rev limit slow it's not true. on real time they are actually bouncing it at a really fast rate. its just cause of the inaccuracy on the internet it shows it slow. when i rev up for launch i full gas it and it bounce fast as always

 

[dr_slump]

oh, you are talking about that ok, look, don't pay attention to that, spectator mode it's inaccurate. when you see that they are bouncing the rev limit slow it's not true. on real time they are actually bouncing it at a really fast rate. its just cause of the inaccuracy on the internet it shows it slow. when i rev up for launch i full gas it and it bounce fast as always

Like I said, it can't be the reason.



Post your suspension setting!

 

[180s]

Okay thanks for your advice.
Since we are on the topic of suspension, I'm going to also post feedback on why I choose it, maybe you can direct me to a better tune. I just want to ****ing learn lol..

ACR SUSPENSION

Ride Height: 20 / -45 - I did this because It generates maximum grip.
Spring Rate: 16.9 / 15.7 - Kind of went with my gut feeling, but also because I felt the fronts where to low.
Dampers (Extension and Compression)
10 / 1
1 / 10 - I have no ****ing clue what dampers do, It's random.
Anti role bars: 4 / 4 - I gathered It's useless?

Toe Angle - 0.45 - Helped me launch a bit better.. Rest are 0

Ballast - 0 / 0

If you could just enlighten me how to properly tune suspension, or tell me tips, I'd greatly appreciate it from a pro like you both

 

[dr_slump]

Okay thanks for your advice.
Since we are on the topic of suspension, I'm going to also post feedback on why I choose it, maybe you can direct me to a better tune. I just want to ****ing learn lol..

That's great!

ACR SUSPENSION

Ride Height: 20 / -45 - I did this because It generates maximum grip.

OMG! No! Definitely not!
Here we go! Ride height is the reason!

This is GT5 and not GT4! Front low, rear high gives max grip! And you did exactly the opposite.

Spring Rate: 16.9 / 15.7 - Kind of went with my gut feeling, but also because I felt the fronts where to low.

Spring rate doesn't change the height!

Dampers (Extension and Compression)
10 / 1
1 / 10 - I have no ****ing clue what dampers do, It's random.

Your tune is random or the dampers story? Pretty basic this here.

Anti role bars: 4 / 4 - I gathered It's useless?

Nothing is useless!

Toe Angle - 0.45 - Helped me launch a bit better.. Rest are 0

Camber 0? Good!
Toe is not bad.

Ballast - 0 / 0

+50 and pray! (it's not noticeable)

If you could just enlighten me how to properly tune suspension, or tell me tips, I'd greatly appreciate it from a pro like you both

READ THIS: https://www.gtplanet.net/forum/showthread.php?t=235213

 

[180s]

Hi thanks for the swift reply.

So with the ride height, I am defiantly just stunned. This changes the whole suspension tune.

What can I base the spring rate on? I am assuming if my front would be stiff, I would have to make it soft, vise versa? Please explain more. Dampers where random, not tune.

Reading your bible, dampers (Both) and anti role bars play a 3 way triangle? If those are perfected then your launch and speed would be great?

To get the bouncing rev, I am thinking maybe I should adjust dampers?

Lots of trial and error to do here, I may PM my transition tune to you, to also get your opinion. 👍

Great tutorial on dragging BTW, Well worth the read.

 

[dr_slump]

Hi thanks for the swift reply.

So with the ride height, I am defiantly just stunned. This changes the whole suspension tune.

Huge difference, yes.

What can I base the spring rate on? I am assuming if my front would be stiff, I would have to make it soft, vise versa? Please explain more.

Spring rate isn't really depending on the ride height. Except when it's bottoming out, but that doesn't happen on Indy (at least I've never seen nor heard that).
You can mainly base spring rate on weight and track surface.

Dampers where random, not tune.

I don't get that sentence, sorry!
Or maybe: "Dampers were set randomly, they aren't tuned"?
Well, then I'm sorry! Trial and error! Check some basic tunes, read some theory, maybe ask some other tuners. The only setting I would give you would be a basic one, and that would have basic damper settings, like the ones in you example.

Reading your bible, dampers (Both) and anti role bars play a 3 way triangle? If those are perfected then your launch and speed would be great?

Hmm, not that much. It's more a relation between springs and dampers.

To get the bouncing rev, I am thinking maybe I should adjust dampers?

....you mean when driving in second (starting) gear, it bounces up and down without hitting rev limiter? Then you should check your spring rates and dampers. Dampers and Springs play hand in hand!

 

[180s]

No problem, It's the damn dampers that annoy me. I have no idea if im making progress or not on them because I trap the same :S

 

[DLR]

No problem, It's the damn dampers that annoy me. I have no idea if im making progress or not on them because I trap the same :S

Fiddling with the suspension should be after you perfected your tranny. Think of it this way, you want your wheels to spin as fast as possible when launching. Take a look at the powerband, if the graph reaches peak power very sharply and shortly, you will probably want to short shift. If the graph reaches peak power and holds it however, you might want to start in 2nd. It's all testing n tuning, finding those sweet spots 👍

 

[Swara]

Fiddling with the suspension should be after you perfected your tranny. Think of it this way, you want your wheels to spin as fast as possible when launching. Take a look at the powerband, if the graph reaches peak power very sharply and shortly, you will probably want to short shift. If the graph reaches peak power and holds it however, you might want to start in 2nd. It's all testing n tuning, finding those sweet spots 👍

for dampers, never put all of it on level 1. It helps for wheelies in offline mode, but in online mode, it sucks. Except for my RS6 Avant. Lol. It actually shaved off 0.24 seconds off my time

 

[180s]

Thanks for replying.
I appreciate what you guys are saying, but I still feel like someone knows what im talking about

 

[dr_slump]

Thanks for replying.
I appreciate what you guys are saying, but I still feel like someone knows what im talking about

And we gave you several answers to that topic........

When you ask for help, but can't accept the answer (from guys with a big experience in drag tuning), then I think we should stop here.

 

[X3sgteX]

And we gave you several answers to that topic........

When you ask for help, but can't accept the answer (from guys with a big experience in drag tuning), then I think we should stop here.

+1

We know what your saying. The answers are there in the first few posts. Regardless of what your seeing in spectator mode...or hearing from other lobby people.. Now someone chime in if I'm wrong, but WE all launch with our tachs slappig rev limiter. Like a quote from somewhere "it just works"

 

[PTK]

WE all launch with our tachs slappig rev limiter.

uh? no... I don't hit the limiter on any of my cars..

 

[180s]

Haha okay, yeah I think I just so worked up about it then my tunes ended up falling behind.

Thanks for your time guys :]

EDIT: Wait WTF to ptk? Care to explain please!

 

[PTK]

Haha okay, yeah I think I just so worked up about it then my tunes ended up falling behind.

Thanks for your time guys :]

EDIT: Wait WTF to ptk? Care to explain please!

My cars never over rev on the limiter... Thats horrible... You should check your cars powerband and see where you should generate max power and shift there. On the first gear launch, your car should not be bouncing at all, It shouldn't even go in the red!

 

[180s]

Now this is when im revving, not going right? Can I PM you more about it please.

 

[PTK]

No this is just after you let off the brake, actually during entire the first gear launch (from let off brake to second gear change). You need to apply full throttle while waiting for the ghost.

 

[180s]

Oh ok i get you

 

[PTK]

I know this is tunnel... but just forget that, its the same concept, watch just the launch and my RPM meter (and I made the vid)... look at how I go full throttle while waiting for the launch and after the "ghost" I never hit red in first gear (or any other for that matter). This is how I tune for 1/4... some cars may need to use 2nd gear but its the same concept.

 

[X3sgteX]

No this is just after you let off the brake, actually during entire the first gear launch (from let off brake to second gear change). You need to apply full throttle while waiting for the ghost.

I think we had mis communication. This is what i was referring to.

We are both on the same page about this though with your later posts.

But back to the op.

Does this clear things up? +1 with your video PTK

 

[180s]

Couldn't help but laugh when I saw that, it worked perfectly lmao,

It answers my question perfectly, thought I might need to do some trial and error.

Reply to your PM ptk, we should tune together.

 

[PTK]

Couldn't help but laugh when I saw that, it worked perfectly lmao,

It answers my question perfectly, thought I might need to do some trial and error.

Reply to your PM ptk, we should tune together.

Thanks, I'm glad I could help. Sure, I'll be on tomorrow...

To all the haters who say I don't help people... go 🤬 yourselves.