Question about stock diff and customizable?

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For example, the GT86 anniversary edition. Stock diff, it is 50 initial torque, 80 acceleration sensitivity, and 0 braking sensitivity. The Fully customizable LSD only goes to 60/60/60 however. I am reading the description for initial torque, and it says the more sensitive initial torque is, the less pronounced the change in handling when it kicks in. I thought a higher initial torque setting (number) means it is more open? With 5 initial torque being as locked as possible/welded? I thought the 86 had a good LSD that provided good limited slip. So why would stock say 80? When the maximum of the custom LSD is only 60? And wouldn't 80 be super open? Like without LSD?

When it says "more sensitive initial torque" it is saying smaller number right?
 
I ran some tests today. It appears to me that they are taking the same route as GT5 Diffing.
As in 5/60/60 is the closest to welded.

I read, read, and read their little description on the inner twerkings as well.

I'm rationalizing that initial tork is how much juice is needed to start the pop and locking process.
then the Accel and Decel is the mount of Jdm tytness, it will allow.

In this case, the 5/60/60 is.....

5.....engage nowww biiiiooooootttchh

60.....all gas Goooooooo

60........on brake, imma never let you Gooooo
 
So here are my findings, might be wrong but hey ho!

With a LSD there are 3 variables:

Initial Torque
Acceleration Sensitivity
Deceleration Sensitivity

Initial Torque - How much torque is required to get the lock, so the lower the setting the easier the diff will lock up due to requiring less torque.

Acceleration Sensitivity - How much will the diff lock under power? The higher the setting the more lock the diff will give you under throttle, this gives you traction but can also introduce over steer.

Deceleration Sensitivity - How much will the diff lock when no power is applied. The higher the setting the more it will lock, which gives you more stability but at the cost of understeer.

So with that 86 you have 50/80/0:

Initial torque: 50 - This means you really have to give it the beans before it will start to lock.

Acceleration sensitivity: 80 - This means it will lock heavily under power, but due to it being a lesser powered car it will not cause huge levels of oversteer but will give you grip under power.

Deceleration sensitivity: 0 - This means the diff is fully open when you are not on the throttle, this helps the car turn in and gives it a darting handling characteristic.

Diff's are abit of a dark art but you have to get them right in order to have a well setup car.
 
ps3dan101
So here are my findings, might be wrong but hey ho!

With a LSD there are 3 variables:

Initial Torque
Acceleration Sensitivity
Deceleration Sensitivity

Initial Torque - How much torque is required to get the lock, so the lower the setting the easier the diff will lock up due to requiring less torque.

Acceleration Sensitivity - How much will the diff lock under power? The higher the setting the more lock the diff will give you under throttle, this gives you traction but can also introduce over steer.

Deceleration Sensitivity - How much will the diff lock when no power is applied. The higher the setting the more it will lock, which gives you more stability but at the cost of understeer.

So with that 86 you have 50/80/0:

Initial torque: 50 - This means you really have to give it the beans before it will start to lock.

Acceleration sensitivity: 80 - This means it will lock heavily under power, but due to it being a lesser powered car it will not cause huge levels of oversteer but will give you grip under power.

Deceleration sensitivity: 0 - This means the diff is fully open when you are not on the throttle, this helps the car turn in and gives it a darting handling characteristic.

Diff's are abit of a dark art but you have to get them right in order to have a well setup car.
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Excellent reply. With initial torque, regardless of whether it is 5 (locked) or 60 (open), the diff will lock in a straight line under full throttle correct?

Also, when a car is cornering, and there is a bit of rear slippage, but there is only one rear wheel turning red/smoking/laying rubber, that is the result of a low acceleration sensitivity am I correct? What does that mean in terms of racing and drifting?

With regards to the 3 variables, it does not matter whether the car has broken traction or if the car is tight (gripping) correct?

How would you compare the stock diff in the game to the diff the car has in real life? The GT86 in real life has a pretty aggressive/good diff, but in the game its initial torque (50) is quite high, and isn't it odd that acceleration sensitivity is 80 for the stock diff, but for the fully customizable LSD it can only go to 60? That would mean it is suppper lock under power. Is this a PD screwup or is there logic behind that?
 
ps3dan101
So here are my findings, might be wrong but hey ho!

With a LSD there are 3 variables:

Initial Torque
Acceleration Sensitivity
Deceleration Sensitivity

Initial Torque - How much torque is required to get the lock, so the lower the setting the easier the diff will lock up due to requiring less torque.

Acceleration Sensitivity - How much will the diff lock under power? The higher the setting the more lock the diff will give you under throttle, this gives you traction but can also introduce over steer.

Deceleration Sensitivity - How much will the diff lock when no power is applied. The higher the setting the more it will lock, which gives you more stability but at the cost of understeer.

So with that 86 you have 50/80/0:

Initial torque: 50 - This means you really have to give it the beans before it will start to lock.

Acceleration sensitivity: 80 - This means it will lock heavily under power, but due to it being a lesser powered car it will not cause huge levels of oversteer but will give you grip under power.

Deceleration sensitivity: 0 - This means the diff is fully open when you are not on the throttle, this helps the car turn in and gives it a darting handling characteristic.

Diff's are abit of a dark art but you have to get them right in order to have a well setup car.
Click to expand...
Correction on both.

The Acceleration is how fast the diff reacts to throttle input, not really the locking. So more would simply mean quicker reaction. It doesn't really give you anymore grip is just makes it spin quicker as you get on throttle. Deceleration is the same but in reverse. It's how long it takes the diff to come to a stop. So it's how fast, not how much.
 
ps3dan101
But then what's the point of initial torque ?

Surely initial torque is the preload of the diff and the accel and decel is where you can adjust how tight it goes under and out of power?
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The initial torque is how easy it locks when the car breaks traction. The lower the easier it locks, the higher the more effort it takes for it to lock which means more grip entering and exiting the corner.
 
But that's not the case, because these diff settings apply to race cars as well. The fully custom LSD works the same on all cars and race cars don't break traction ?

Surely the Intial torque is sensitivity and preload. Accel and decel are how much lock you have ?
 
ps3dan101
But that's not the case, because these diff settings apply to race cars as well. The fully custom LSD works the same on all cars and race cars don't break traction ?

Surely the Intial torque is sensitivity and preload. Accel and decel are how much lock you have ?
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Same can be applied to race cars. Think of the term "initial torque", it's how much torque is required to lock the diff. Acceleration and Deceleration are self explanatory.

But you can experiment with it yourself. My base diff setting is around 20/35/35 if I want more grip I'll increase the torque and lower the acceleration slightly. For race cars it's different because it depends more on how much power, weight etc.
 
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Drift_Monkey
Same can be applied to race cars. Think of the term "initial torque", it's how much torque is required to lock the diff. Acceleration and Deceleration are self explanatory.

But you can experiment with it yourself. My base diff setting is around 20/35/35 if I want more grip I'll increase the torque and lower the acceleration slightly. For race cars it's different because it depends more on how much power, weight etc.
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I'm gonna go with @ps3dan101 on this one. Initial: How fast it locks. Accel: how agressive it locks. For example, a car on 35 accel, doesn't completely lock. A car on 60 doesn't either, but it comes closest to it. I think only 100 accel means 100% lock.
 
The GT86 uses a Torsen LSD, that's why it's hard to make sense of those numbers.
I think it's a generic value for all/most torque sensing LSDs in Gran Turismo.
 
hmm, this seams a little odd, I'm playing with the twin turbo supra, running a 5-60-60 diff it was opening only 1 wheel to start with, the 2nd wheel would spin mid corner. When the 2nd spun it then went for aggressive angle and almost put me off. This was good fortight tracks like Matterhorn. But then I tried 60-60-60. I then found I had ridiculous grip. Couldn't get the car to lose traction on Matterhorn even in the wet, but if it did break traction it was soo aggressive I'd swap ends. It also used to understeer quite harsh, so I'd have to already be sideway well before the corner. . Yet this diff ratio was almost excellent on the streets of willow. I have now gone to a 5-30-30 ratio and it seems to be a really well balanced diff setting considering the power curve of the car. I found the above instances easy to find on High speed ring. But doesn't this contradict the above posts???
 
it does... i feel as though no one really knows what locked is in terms of the lsd settings. But we can safely say a lower initial torque feels much better for drifting.

Edit: I've just tested 5/60/60, 60/60/60 and 5/5/5. 60 initial torque is most definitely open diff and 5/5/5 as well as 5/60/60 is still a 2way diff. As long as acceleration is the same as deceleration and the torque is at 5 you have a locked diff. If your acceleration is different from the deceleration and the initial torque value is between 5 and 60 it is a 1.5 way. Acceleration and deceleration don't seem to change how the wheels lock, only how fast it reacts when you get on the gas and off.
 
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With the LSD on gt5 we can only emulate different settings of a 1.5 & 2 way diff.

In reality 0 60 60 would be a locked diff as the initial torque would not matter due to the diff being permanently locked.

5 60 5 is as close to a 1 way diff as we can get, but in reality it should be something like 5 60 0. The initial torque should be the only variable that is changed on a 1 way.

5 60 30 is as close to a 1.5 way and mirrors the setup of a real 1.5 way. Again the initial torque should be the only variable that is changed on a 1 way.
 
ps3dan101
With the LSD on gt5 we can only emulate different settings of a 1.5 & 2 way diff.

In reality 0 60 60 would be a locked diff as the initial torque would not matter due to the diff being permanently locked.

5 60 5 is as close to a 1 way diff as we can get, but in reality it should be something like 5 60 0. The initial torque should be the only variable that is changed on a 1 way.

5 60 30 is as close to a 1.5 way and mirrors the setup of a real 1.5 way. Again the initial torque should be the only variable that is changed on a 1 way.
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1.5 ways dont mean half the deceleration it means that it's in between locked and open. Can be any setting between 1 and 2 way.
 
Drift_Monkey
it does... i feel as though no one really knows what locked is in terms of the lsd settings. But we can safely say a lower initial torque feels much better for drifting.

Edit: I've just tested 5/60/60, 60/60/60 and 5/5/5. 60 initial torque is most definitely open diff and 5/5/5 as well as 5/60/60 is still a 2way diff. As long as acceleration is the same as deceleration and the torque is at 5 you have a locked diff. If your acceleration is different from the deceleration and the initial torque value is between 5 and 60 it is a 1.5 way. Acceleration and deceleration don't seem to change how the wheels lock, only how fast it reacts when you get on the gas and off.
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This contradicts itself bigtime. 5/60/60 is as close to a 2 way (locked) diff, you can come. 60 60 60, is open. 5 5 5, is open. (Considering the 5 Accel means that there is only very little the diff is doing to keep wheelspin at the same speed, the wheels will be turning at very varying speeds.)
 
Drift_Monkey
1.5 ways dont mean half the deceleration it means that it's in between locked and open. Can be any setting between 1 and 2 way.
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The 1.5 way only locks half way under deceleration terms if I recall...

I read this on a motorsport forum:

Short version:
1 way: Differential completely opens on decel.
1.5-way: Differential "unlocks" in decel at half the rate it locks on acceleration.
2-way: Differential unlocks/locks at the same rate in accel/decel.
 
Gonales
This contradicts itself bigtime. 5/60/60 is as close to a 2 way (locked) diff, you can come. 60 60 60, is open. 5 5 5, is open. (Considering the 5 Accel means that there is only very little the diff is doing to keep wheelspin at the same speed, the wheels will be turning at very varying speeds.)
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which is the point ive been trying to make at the start that Acceleration and deceleration have nothing to do with the locking, only the response. The initial torque is the lock.
 
Drift_Monkey
which is the point ive been trying to make at the start that Acceleration and deceleration have nothing to do with the locking, only the response. The initial torque is the lock.
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Like I said. Saggyscrot is right. Torque is the amount of torque needed to lock. Acceleration, is the amount of lock under accel... It's not rocket science mate.
 
Drift_Monkey
sigh, now you guys are being stubborn. I'm over it.
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So, the 2 people trying to tell you something, (which a lot of other people back up), are stubborn, when you refuse to accept what they try to tell you. And you are the only person that believes otherwise?
 
I wish PD would remove the adjustable diff and have actual 1, 1.5, and 2way diffs like they used to.

The adjustable is just too mysterious. Even when set to 5/100/100 it still was weird, so I quit messing with it and drove the aristo with a stocker.
 
Serum
I wish PD would remove the adjustable diff and have actual 1, 1.5, and 2way diffs like they used to.

The adjustable is just too mysterious. Even when set to 5/100/100 it still was weird, so I quit messing with it and drove the aristo with a stocker.
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Im guessing they were meant to give us more control over the way it's tuned but some people rather a cheap welded diff setting.
 

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