Launch control
#41
#42
#44
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The instructions in the manual says it all IMO. 'Lightly applying throttle' is NOT proper launch control. He even posted the manual instructions to prove he has launch control... but that actually proved he really doesn't. Ha ha. You can call something whatever you want, but the facts speak for themselves. What he can definitely answer, is at what rpm he gets the dash light of 'activation ready'. But based on 'lightly applying throttle', my bet is it'll be quite low... which would be perfectly fine for a large V8 with a supercharger. So the other question some of you guys could answer (IF you're into that kind of thing
) is what is the ideal rpm to launch your F-Type using brake-torquing. Based on having a supercharger, I don't think anything more than 2K rpm is needed. And whatever that rpm is, that's probably what the 'launch control' system is doing. So basically a simple brake-torque launch, but at the optimal rpm. So in a sense, that dash light is probably better than nothing, but if you know at which rpm that is, the system doesn't help launch your car any quicker. It just acts like a shift light, telling you when it's optimal to shift... or to launch. Having said that, for a proper launch, you definitely need a DCT, which do the equivalent of a clutch dump. Both systems are quite abusive, but brake-torquing can overheat a regular transmission in short order. That's why in most cases, you can only do one, and require several minutes of cool-down. So for me this is a moot conversation, since I'd never use it anyway
.
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Last edited by JCtx; 08-12-2023 at 03:14 PM.
#45
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Portlander (08-12-2023)
#46
#47
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Yes, Dynamic Launch doesn’t do much, mostly it disables rev matching to keep the revs up during shifts. This document describes it on p. 5.16.
https://www.dropbox.com/s/wskjex70o2...ntrol.pdf?dl=0
Dynamic Launch
Dynamic Launch enhances vehicle acceleration and
automatic gear changes. The system uses driver brake
and throttle inputs to detect a ‘launch’ situation and
adjusts gear shifts accordingly.
During normal automatic gear changes, the engine’s
power and torque are reduced slightly to match the
engine speed to the transmission speed, which deliv-
ers a very refined shift.
In Dynamic Launch the engine’s torque is not low-
ered during the gear change. This delivers maximum
through-gear vehicle acceleration, through 1st and
2nd and then through 3rd and 4th gear changes. This
allows the car to accelerate more quickly than when in
‘conventional’ Sport Mode.
Because the torque is not lowered during the process,
the driver also feels a slight ‘boost’ in acceleration as
the transmission and engine speeds are matched, trad-
ing refinement for ‘sportiness’.
https://www.dropbox.com/s/wskjex70o2...ntrol.pdf?dl=0
Dynamic Launch
Dynamic Launch enhances vehicle acceleration and
automatic gear changes. The system uses driver brake
and throttle inputs to detect a ‘launch’ situation and
adjusts gear shifts accordingly.
During normal automatic gear changes, the engine’s
power and torque are reduced slightly to match the
engine speed to the transmission speed, which deliv-
ers a very refined shift.
In Dynamic Launch the engine’s torque is not low-
ered during the gear change. This delivers maximum
through-gear vehicle acceleration, through 1st and
2nd and then through 3rd and 4th gear changes. This
allows the car to accelerate more quickly than when in
‘conventional’ Sport Mode.
Because the torque is not lowered during the process,
the driver also feels a slight ‘boost’ in acceleration as
the transmission and engine speeds are matched, trad-
ing refinement for ‘sportiness’.
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#48
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#52
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Having owned two F-Types, a base model 2018 and a P450 AWD 2022, I think it would have been nice had Jaguar overtly stated whether or not each vehicle was equipped with launch control. Neither of my F-Types reacted positively to launch control instructions so I'm assuming neither had or has it.
#53
#54
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It kicks down to first so quick that it's fine. If you are good enough to shift at just the right moment, then go with the manual shifts. I'll take the ego blow and admit that when in Sport, the cars shifts better than I do.
Last edited by eeeeek; 08-14-2023 at 02:00 PM.
#55
#56
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I mist admit I can't change quick enough on the paddles from.1st to second on a standing Starr it always flashes like crazy as it hits the rev limiter so fast.
#58
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As stated elsewhere only the V6S got launch control and the base model never got it anywhere in the world.
#59
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Indeed, but that's not what the instructions you posted said, hence our confusion. They said to press the gas pedal lightly, and when the launch message says it's ready, to release the brakes, then floor the gas pedal. That's clearly just a brake-torque launch. But if it's like you just described above, then it'd' be proper launch control. So for which model were the instructions you posted??? Just curious.
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Portlander (08-15-2023)
#60
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My MY18 V8 handbook has the same set of launch control instructions, so it's clearly a "one book fits all" publication - it also includes details of the auto high beam assist and blind spot monitoring, neither of which are fitted to my car.
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OzXFR (08-15-2023)