F-Type ( X152 ) 2014 - Onwards

F-Type S and Launch Mode Frustrations

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Old Dec 20, 2017 | 08:06 AM
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Default F-Type S and Launch Mode Frustrations

Ok, so this has been discussed in the past but I am just irritated with it at this point.

For us to use dynamic launch we put the car into dynamic mode, foot on brake and other foot on gas to 1,500 RPM. Dash says dynamic launch ready, we wait until we want to go, foot comes off the other foot bashes the gas pedal to the ground.

This is all fine and dandy but I feel like it has been set up for the RWD cars.

With a AWD model I feel like you should be able to launch at a much higher RPM and be faster than the RWD car due to less traction issues.

Today I discovered that if you are NOT in dynamic mode and you use your left foot for the brake and right for the gas, it does not limit your rpm's not does it give you dynamic launch. I used this method to shoot the car off the line at 2,500 RPM and it felt a hell of a lot quicker than the dynamic launch.

Is my mind playing tricks on me or was this system simply not designed with the AWD cars in mind?
 
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Old Dec 20, 2017 | 08:41 AM
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Originally Posted by PunisherFType
Is my mind playing tricks on me or was this system simply not designed with the AWD cars in mind?
You're thinking they developed this car like the GTR or 911 AWD platforms and that is simply not the case. While the AWD setup in the F-type is the same style as the GTR, Jaguar engineers went much more conservative with the tuning of the trans/engine at launch. They really prevent you from doing a hard launch and i would imagine launch control is letting you down because of this.

Most people, myself included, have found you get the quickest 0-60 or 60' times by launching off of idle. Literally not touching the gas at all until releasing the brake.
 
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Old Dec 20, 2017 | 09:04 AM
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But in normal mode and letting it go at 2,500 or above you're saying it will be slower than from a idle launch?

Does dynamic mode do anything for us as far as drag racing goes?
 
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Old Dec 20, 2017 | 09:25 AM
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Originally Posted by Stohlen
Most people, myself included, have found you get the quickest 0-60 or 60' times by launching off of idle. Literally not touching the gas at all until releasing the brake.
That seems to be the consensus for the V8, but he's got a V6. I don't have an automatic, so I can't really address the original question.
 
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Old Dec 20, 2017 | 09:26 AM
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A big difference is the type of gearbox. Other cars that use launch control pretty much all use DCT type boxes - as good as the ZF8 is I am not sure that a traditional automatic / torque converter box is best suited to launch control applications.
 
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Old Dec 20, 2017 | 09:38 AM
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Originally Posted by ek993
A big difference is the type of gearbox. Other cars that use launch control pretty much all use DCT type boxes - as good as the ZF8 is I am not sure that a traditional automatic / torque converter box is best suited to launch control applications.
That is actually correct. By comparison on a BMW Z4 35is with DCT it can launch at 5000 rpm as it's a Dual Clutch not a torque converter driven box.
 
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Old Dec 20, 2017 | 09:42 AM
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Originally Posted by ek993
A big difference is the type of gearbox. Other cars that use launch control pretty much all use DCT type boxes - as good as the ZF8 is I am not sure that a traditional automatic / torque converter box is best suited to launch control applications.
You're certainly correct here. But even still, it's pretty pathetic that they won't even allow you to load up the torque converter without pulling power from the motor.
 
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Old Dec 20, 2017 | 11:26 AM
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good read on the subject

https://www.zf.com/corporate/media/e...wbis1000nm.pdf
 
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Old Dec 20, 2017 | 05:59 PM
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Originally Posted by lizzardo
That seems to be the consensus for the V8, but he's got a V6. I don't have an automatic, so I can't really address the original question.
with the MT we have infinite launch control. We can launch it any rpm we want to. (At the cost of clutch material)
 
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