And don't forget 100 km/h is 62.4 mph, so 4.22 seconds 0 - 100 km/h equates to around 4.00 seconds 0 - 60 mph.

 

++++++1!

 

Sadly nearly twenty years after dsc / esp was developed many drivers don't seem to understand how it works.
Yes it often includes traction control to limit wheel-spin by backing off power, usually modulating the throttle is not the first strategy as power and torque can be limited much quicker by ignition timing ( retard ) change and with F type with EAD by actuating electronic differential.

The part of stability control that's most often misunderstood is dealing with understeer and oversteer. This uses sensors for yaw, steering angle amongst others .

When understeer or oversteer is detected it corrects this by doing something no driver however expert they are can do, apply brake selectively to a particular wheel (not all four).

I watched a YouTube video from about 2001, it was first generation ESP the test involved simulating an emergency swerve left, right,left, right
It was carried out on low grip surface, a frozen lake, the manufacturer suggested testing with and without ESP at 50mph.
The driver was Tiff Needel a UK professional race driver and TV presenter, he tested at 70mph without and with stability control enabled
Far better driver than I, and I suspect most if not all forum members.

Watch, then tell me DSC can't benefit even highly skilled drivers.

 

so from my "testing" i have learned:
V8S RWD

in full nanny mode the F-Type is stable and confident as long as you don't come in too hot or apply "overly generous" peddle, and if you do it shuts it down fast to keep the rear wheels lined up with the front and minimize wheel spin.

in TracDSC it will let you spin the wheels fairly hard up to about 30mph and to what i would consider about 15 degrees of front wheels not lined up with the rear before it shuts it down. But in order to spin the wheels from a stop you need to have the wheels strait and get on it hard.

DSC Off you can blow the tires off at any moment. BUUUT if you spend some time in a parking lot its very very easy to manage the slide and have some fun! even in traffic and tight spaces it will follow the front wheels almost to the point of being sideways, i honestly think this is where the F-Type is the most fun.

my two problems are the random wheel hop and the how long it takes to turn off DSC when im in a hurry to turn it off...

 

Unfortunately I don't think my car has the dynamic launch. It is the base.

 

You missunderstand me; I never said that DSC wasn't a benefit, in fact, I think it's a huge benefit that allows the car to be driven by the less skilled/experienced drivers or by more skilled drivers in conditions that would make the car a handful or even un-driveable. I love to be able to put the DSC on when in traffic or when it starts to rain, etc. and not have to be as mindful of the throttle.

What I take exception to is the idea that a good driver on a good road in good conditions is somehow crazy to drive an F type with the DSC off.

Cheers,
Dave

 

I know this thread is about DSC limiting acceleration, but some nanny discussion benefits seem to have filtered in, so...this morning I was driving to work early morning on city streets. I was doing about 35-38 mph when I came up on a yellow light while about to make a left turn. Rear end started to slide out. It took about a second or so and the nannies kicked in to stop the slide. What surprised me is that at that relatively low speed and not too much throttle that the rear end would want to step out. My car is AWD R, in DSC, 8900 miles on oem tires, 59 degrees, no rain (maybe some dew, it was 6:30 am). I would have expected more grip and with even more throttle. Any thoughts on this?

 

If your OEM tyres are Pirelli P-Zero that is where I would put the blame.
I replaced the P-Zeros on my car yesterday with Michelin Pilot Sport 4 S, and already the difference in grip is very noticeable. Today I tried a couple of tests where the P-Zeros would lose traction and the DSC would cut in, and the 4 S just gripped and went, without any DSC interference. Night and day, although of course I am comparing fairly worn P-Zeros (all four inside edges were bald although plenty of tread in the middles and the outer edges) with brand new 4 S.

 

I don't think that's his point Dave. I think his point is that even a driver of your skill will benefit from good DSC. IMO, your argument is similar to saying ABS isn't needed because you are so damn good at braking. I remember guys holding on to that for YEARS.

Unless you are a professional driver (maybe that is your skill level), many track instructors advise using *some level* of DSC on the track to get around faster and be safer. Even for advanced drivers.

That said, I do agree with your last statement. It's not crazy at all to drive with the nannies off. If you can't get to the point of feeling safe in good conditions with them off, the car may be too much for the driver.

 

My opinion is that the possibility of dew on the road is a likely cause. My understanding is that roads that are damp, often close to dry can have less grip than very wet roads, the opposite of what we might expect.
Additionally your F type R being AWD is a moot point in this case, I believe AWD on Jaguar is like many other AWD cars, most of the time, unless putting down serious power it's sending all torque to rear wheels and hence will behave like a RWD car. Only when wheel spin is just about to occur will some torque be tranferred to the front wheels (up to 30% max ?).
If your car's rear stepped out then unless excessive power / torque prompted this and my interpretation of your post leads me believe this wasn't likely, the oversteer was caused by lack of lateral grip.

At the risk of irritating members who choose to refer to DSC as "nanny mode" rather than an electronic safety aid I would suggest that your experience illustrated quite well how road conditions can change quite quickly and sometimes with little warning.

 

I race with track DSC, however if I were to do a drag race I'd turn it completely off. If you want to go fast in a straight line (and know what you are doing) DSC will slow your car down.

 

@ Oz: I was going to put the blame on the Perellis but still plenty of tread.

@ Paul: I'm am thinking along your lines. What needs to be recognized that in the situation I describe, the Dsc corrected faster than I likely could have. Need to be cognizant of step out even with AWD, with DSC at relatively low turning speeds. At 32 degrees could be a skating party.

 

I have never met a person that did not believe he was a good driver. Thats why there are millions of wrecks every year.

I have also never met a person, unless completely high, admit they were dumb.

I think the homo sapien ego has a built in DSC, it will not allow one to ever believe they can be bad at driving or bad in thinking, even when drunk.

 

.

nice. ....I've been driving higher hp cars than the F type with zero electronic aids for decades....and racing motorcycles for longer than that. if you want to believe that you'll spontaneously burst into flames if you turn DCS off on your F type, don't let me try to convince you otherwise.

a great many F type owners would do well to practice driving their cars in a controlled environment without the DSC crutch IMO.

cheers,
Dave

 

No that's not what I was saying.

I was reminding everyone that we think more highly of our driving skills than reality suggests. There have been many test to prove this. Under the influence of alcohol is one of the few instances where the ego reveals itself.

However, logically speaking, if one drives where the wheels never slip, they are driving slower than the DSC. Because the DSC is braking the wheel spinning and allowing you to keep your foot on the throttle, albeit cutting throttle, but thats faster than the foot. Because by foot you have no way of braking individual wheels.

 

Dave,
I agree with your final point above.

My principle point is that DSC will sometimes recover from a situation that even a skilful driver as you imply you are couldn't recover from without DSC.

 

OK, thanks guys; I think we're all singing from the same sheet of music.

Cheers,
Dave

 

Today I decided to do my first official launch in the AWD R. Turned off DSC completely, went into dynamic mode, put the shifter into S and floored it. Not to complain but the car just took off, barely a single tire sound. I expected at least some amount of tire spin with the DSC off @ ~640bhp but pretty much nothing, full grip. Is that normal? Running Michelin Pilot Super Sport 265/305s

 

A base V6 puts more power to an axle than your tuned AWD V8 and therefore more likely to do a burn-out. You need to go back to the Pirelli's if you want massive wheel spin.

 

Ugh. Just spill some ATF to get it going.

Still, if your goal is to hoon with impunity, both AWD and good tires are counter-indicative.