RB Traction Control yin yang

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Mandrake
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Re: RB Traction Control yin yang

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luicchi wrote:[...] :lol: :lol: :lol: :lol: Remember the beginning of the season????
[...] :wtf: Do you really think soo??? Oh boy #-o
[...] This can be my impression but ...Are you a Vettel fan????
We are long past the start of the season. Search AMuS for articles on how especially Vettel is able to make the option tire work best (compared to his team mate for example). This transfers to the start of the race as well. Mercs have either been strong the whole race or only came to life when the fuel cell was getting empty.

I do not know any of the drivers personally, but judging the way the drivers are presenting themselves I would indeed say that Vettel, followed by Kimi, is most interested. He also visits the factory way more often than his team mate. And lastly, he was one of the only ones to visit the Pirelli factory.

shelly
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Re: RB Traction Control yin yang

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WilliamsF1 wrote:
However the latest issue of Racecar Engineering raises an alternative, legal and highly innovative solution for the RB9′s mid corner performance, which could also explain many of Red Bull’s reliability issues.
It is theoretically easy to modulate the output torque and charging input torque to an electric motor/generator using capacitors, batteries, inductors and a feedback signal. Torque changes are instant and control is easy and legal.

http://www.racecar-engineering.com/news ... -revealed/
That's what I meant in my post yesterday. Nice to see rce stating this also
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Stradivarius
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Re: RB Traction Control yin yang

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SectorOne wrote:Naw how cute, anonymous person likes to downvote... Maybe it´s you?
It´s almost like a church in here. The preacher says a bunch of stuff and everyone is going yea yea yea.
Without actually thinking about what really happened during the race.
Lap times are worth looking at for a couple of things, qualifying, tire life, and when in the races you need to show your cards.
I won't bother quoting everything you wrote, as I guess it can be interpreted as you don't want to look at the lap times because you choose to believe that Vettel was only cruising for the whole race. At least that is one interpretation of what you write. (But I must admit it is difficult to find out exactly what you mean without running into contradictions.)

But then you seem to have the opinion that Vettel at some point did show his true pace. I would then like to ask you to explicitly explain when he showed this true pace that impressed you so much. You seem to be very impressed with what Vettel did on lap 1 and 2, and also the laps he did after Rosberg pited. But if you study the lap times, you will see that this big difference at the beginning was due to Rosberg being very slow, not Vettel being very fast. You should also be aware of the fact that since drivers have to manage their tyres throughout the stint, you should never try to compare just one or two laps, because one of the drivers might be in tyre conservation mode, while the other driver isn't. The laps at the end of Vettel's first stint, when you say he was faster than Rosberg was on new tyres, were not particularly fast compared to what Rosberg was doing before his first stop. And at that time Vettel could go flat out without being concerned with his tyres, because he was soon going to change them anyway. Rosberg, however, had a long stint ahead of him and had to think about that. So he didn't necessarily push as hard as Vettel at that point. Anyway, what you have observed was Rosberg driving slower at some points in the race compared to what he could at other points, you have not seen any proof of Vettel being more than one second faster per lap.

I would also like to add that I doubt Vettel was cruising to any further extent than Rosberg during the first stint. They both needed to look after their tyres.

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Hail22
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Juzh wrote:So hamilton in today's press conference indirectly accused red bull of running traction control, stating:

"The last time I could put down the pedal that quick was in 2007 when we had traction control."

Article is on skyF1. I'll link video of full press conference when it becomes available.
[youtube]http://www.youtube.com/watch?v=Nqbu8PVQ5fA[/youtube]

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jamsbong
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Re: RB Traction Control yin yang

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Hamilton brain is really simple.

2007 and 2008 was the last generation of winglets F1 cars, i.e. twice as much downforce. With or without TC, those cars would be able to pull out of corners quicker than today's F1 car.

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turbof1
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Re: RB Traction Control yin yang

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If you watch the video, you'll notice he says that they -mercedes- are always looking for more rear downforce, and I think that is the clue of the story: he isn't implying that red bull is running traction control; he is implying they just have more downforce. Unlucky choice of words there at the end, which got ripped out of context.
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SectorOne
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Edit: someone downvoted mine and yours, so you are welcome in the sense that i neutralized your post even though i probably should be the last person to do so.
Stradivarius wrote:I won't bother quoting everything you wrote, as I guess it can be interpreted as you don't want to look at the lap times because you choose to believe that Vettel was only cruising for the whole race. At least that is one interpretation of what you write. (But I must admit it is difficult to find out exactly what you mean without running into contradictions.)
No that´s not true. Looking at laptimes is one thing. But basing everything on it is utterly insane.
I´ve explained in detail why that is as well.

Oh please, present the contradictions, and while you are it, respond to your original idea of Rosberg being hampered by Vettel´s wake despite being over 2 seconds away from him.


Stradivarius wrote:I would then like to ask you to explicitly explain when he showed this true pace that impressed you so much.
Is this a joke or are you just playing around? Are you honestly asking me this?
Especially considering not only what i wrote in the post but also what you wrote here below.

You don´t have to respond because this quote above just let me know where the bar is set....
It´s like the lights are on but there´s nobody home.
Stradivarius wrote:You seem to be very impressed with what Vettel did on lap 1 and 2, and also the laps he did after Rosberg pited. But if you study the lap times, you will see that this big difference at the beginning was due to Rosberg being very slow, not Vettel being very fast.
Yes very impressed at the opening laps, obviously.

Ok so Rosberg was just slow. How about Alonso? New tires, 5 tenths of Vettel on 26 laps old tires.
Maybe everyone was just going slower... i guess that´s the only thing that makes sense when you are trying to downplay the utter dominance displayed by Red Bull.


Stradivarius wrote:You should also be aware of the fact that since drivers have to manage their tyres throughout the stint, you should never try to compare just one or two laps, because one of the drivers might be in tyre conservation mode, while the other driver isn't.
At the start of a race, people are going as fast as they can, when things are settled they start tire conserving.
Just like after the Safety Car, like Hamilton said, "we are going flat out". Watch the press conference for "facts".



Stradivarius wrote:you have not seen any proof of Vettel being more than one second faster per lap.
Oh i have, but maybe you haven´t.

Opening laps are flat out. Then they get a call to start preserving tires to make sure they hit their pit window/strategy.

The first four laps he´s pulling away with an average of 1,5 seconds per lap. <--- You can´t brush this away!

Image

You can clearly see how he first pushes like crazy, absolutely destroying everyone.
Backs off the true pace of what the car really can do and drives a little bit quicker or level with Rosberg.
He´s just chipping away at the gap and occasionally saves his tires on certain laps.

He´s literally playing with Rosberg. He cuts back on the pace, finds out Rosberg set an identical laptime.
Pulls out 6 tenths on the next lap just to let him know that there´s no way he will have this one.

With Michelin´s you would see the gap increase by how he increased it in the opening laps.
The Red Bull has a Pirelli-leash on it.. That´s the only thing that held that car back in Singapore.
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beelsebob
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Re: RB Traction Control yin yang

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jamsbong wrote:Hamilton brain is really simple.

2007 and 2008 was the last generation of winglets F1 cars, i.e. twice as much downforce. With or without TC, those cars would be able to pull out of corners quicker than today's F1 car.
As we've covered in various other threads, modern day F1 cars actually are generating very close to that much downforce. Newey recently stated that the 2010 cars were the peak of downforce generation in F1, and that the modern cars are close.

radosav
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Re: RB Traction Control yin yang

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beelsebob wrote:
jamsbong wrote:Hamilton brain is really simple.

2007 and 2008 was the last generation of winglets F1 cars, i.e. twice as much downforce. With or without TC, those cars would be able to pull out of corners quicker than today's F1 car.
As we've covered in various other threads, modern day F1 cars actually are generating very close to that much downforce. Newey recently stated that the 2010 cars were the peak of downforce generation in F1, and that the modern cars are close.
I agree, and i think that Lewis did make that statement about TC on purpose , not so to accuse RBR of cheating , but more to point how great car Vettel drives !

aussiegman
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From the Racecar Engineering prelude:

"However the latest issue of Racecar Engineering raises an alternative, legal and highly innovative solution for the RB9′s mid corner performance, which could also explain many of Red Bull’s reliability issues.
It is theoretically easy to modulate the output torque and charging input torque to an electric motor/generator using capacitors, batteries, inductors and a feedback signal. Torque changes are instant and control is easy and legal.

If torque were to be modulated in response to the normal force of the tires against the track (in response to shock pressure for example) significant unused traction potential could be recovered during high pressure phases (upside of bumps) and initiation of full wheel spin during low pressure phases (downside of bumps) could be delayed. Yielding better turn exit acceleration, higher cornering speeds and stability. Especially on bumpy tracks like Singapore."

So it seems my friends and I were not the only ones to draw a comparison to the RBR KERS failures earlier in the season and consider the possibility of using the KERS system to legally control torque at the whees
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fasterthanyou
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Re: RB Traction Control yin yang

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SectorOne,

Rosberg had problems after the safety car. Hamilton, Alonso and everyone else are stuck behind him.

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hollus
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Actually, since the matter of whether Vettel was going as fast as he could or not is in this case on topic... (whether the car could take going faster is another matter, see where Webber's ended).

Has anybody noticed that Vettel (wen he can) seems to pull away from the field until he is 7 seconds ahead, then he settles into the pace of his pursuers? It can be seen there at the beginning of the race, and I have noticed in dozens of races before (I might look for hard data this weekend). It is not 6, it is not 8, he pushes until he is 7 seconds ahead, then settles. In this case he didn't do it after the SC and he went like 25 seconds ahead, but crucially he also went 25 (+5?) seconds ahead of the car in P8 and he needed space to pit safely.

Check it out if he leads in Korea in the dry. 7 seconds. Why precisely 7?

Image
In most cases, the majority is below the average.

Tommy Cookers
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aussiegman wrote: "However the latest issue of Racecar Engineering raises an alternative, legal and highly innovative solution for the RB9′s mid corner performance, which could also explain many of Red Bull’s reliability issues.
It is theoretically easy to modulate the output torque and charging input torque to an electric motor/generator using capacitors, batteries, inductors and a feedback signal. Torque changes are instant and control is easy and legal.
If torque were to be modulated in response to the normal force of the tires against the track (in response to shock pressure for example) significant unused traction potential could be recovered during high pressure phases (upside of bumps) and initiation of full wheel spin during low pressure phases (downside of bumps) could be delayed. Yielding better turn exit acceleration, higher cornering speeds and stability. Especially on bumpy tracks like Singapore."
the KERS machine (motor/generator) has a specialised type of drive that continuously modulates the MG torque
(either torque output ie motoring or torque input (load) ie generating)
the 'demand' signal from the ECU is to give a desired (eg steady) torque although rpm is varying rapidly
the drive always knows the actual rpm, so supplies the MG with appropriate voltage, giving demanded torque despite changing rpm
(necessary because an electrical machine has an inherent opposing 'back emf' voltage that is proportional to machine rpm)
this is fundamentally an internal current-controlled loop equivalent to a torque-controlled system
so in principle the KERS can seamlessly sweep from motoring to generating or vice versa if that's what the ECU wants
any EM in KERS or 2014 has built-in EM rpm feedback or the equivalent, and neither the EM or its drive could work without this
because of this (internal) rpm feedback, wheelspin causes a sudden fall in signal voltage, and in voltage to the EM
so as wheelspin starts the motor torque rapidly starts to fall (by some useful amount, seamlessly even into reverse torque)
(of course, a suitable internal rate of change limit of current/voltage ('slew rate limit') must have been set to achieve this)

for this modulation of torque RCE's 'capacitors, batteries, inductors and a feedback signal' are not needed
RCE instant torque changes (from the machine) are impossible (because of the EM inertia and other factors)
for the torque to be modulated according to wheel load as per RCE some load sensing device and feedback would be needed
this would surely be banned via a protest and ruling ?

so wheelspin (even wheel locking) can be and is deterred using the inherent characteristics of the EM and its drive
(this deterrence however achieved depends fundamentally on the EM capability, so will from 2014 be much greater)
so legal (passive-component) networks as per RCE may be more useful in 2013 than 2014
Last edited by Tommy Cookers on 05 Oct 2013, 12:34, edited 2 times in total.

Stradivarius
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Re: RB Traction Control yin yang

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SectorOne wrote:Edit: someone downvoted mine and yours, so you are welcome in the sense that i neutralized your post even though i probably should be the last person to do so.
Stradivarius wrote:I won't bother quoting everything you wrote, as I guess it can be interpreted as you don't want to look at the lap times because you choose to believe that Vettel was only cruising for the whole race. At least that is one interpretation of what you write. (But I must admit it is difficult to find out exactly what you mean without running into contradictions.)
No that´s not true. Looking at laptimes is one thing. But basing everything on it is utterly insane.
I´ve explained in detail why that is as well.
I think that when one claims that one particular driver is more than one second faster per lap than another driver, the lap times become essential. I don't really see another way of arguing for or against a statement like that, without basing it on the lap times.
Oh please, present the contradictions, and while you are it, respond to your original idea of Rosberg being hampered by Vettel´s wake despite being over 2 seconds away from him.
First of all, I never said that Rosberg was hampered by Vettel's wake being over 2 seconds away. What I wrote was: "the first couple of seconds will come automatically, without having a faster car". When I write "a couple of seconds" it's a way of expressing some uncertainty. Some years ago, it was said that you could feel the car ahead when within 4 seconds, although the effect is obviously not strong at such a distance. When Alonso was penalized at Monza in 2006 for hindering Massa during qualifying, I don't think he ever was less than 2 seconds ahead in any corner. My point was not that Rosberg spent a lot of time close to Vettel. My point was that if Rosberg had had identical pace to that of Vettel, he would have been a couple of seconds behind Vettel at the end of the stint. So when we are evaluating Vettel's speed in light of the lead of 8.275 seconds after 14 laps, the reference should not be 0, it should be a couple of seconds. I.e. if Vettel had an identical car behind him with an equally skilled and minded driver, the gap wouldn't have been 0 seconds after 14 laps, indicating identical pace. The gap would have been a couple of seconds, maybe even more. If you choose to stay close to the car in front, your tyres will suffer in the long run and you will loose performance towards the end of the stint. So a couple of seconds is probably quite a careful estimate from my side.

Regarding the contradictions, what I said was that it was difficult to interpret what you write without running into contradictions. But the main message was that I don't quite understand how to interpret what you write. One possible interpretation, which contains a contradiction, is that you claim that Vettel showed that he was more than a second faster than Rosberg, but you also say that we can't rely on the lap times. You then refer to the lap times when Vettel was on old tyres, while Rosberg was on new tyres, as proof that Vettel was a lot quicker. If I understand you correctly, you are either refering to lap 16 and 17 or to lap 41 to 44. That was when Rosberg had pited and Vettel hadn't. On lap 16 and 17, Vettel did 1:53.784 and 2:01.858 (his inlap). Rosberg was actually not much slower than this on lap 14 and 15, when he did 1:53.835 and 2:00.635 (his inlap). Vettel's pace on these two laps are actually not very impressive and he even looses more than a second on his inlap compared to Rosberg. I don't see the 1 second difference here.

Regarding lap 41 to 44, Rosberg was then clearly hindered by Webber, and he probably also didn't want to stay too close to Webber, as he hadn't scheduled any more pitstops and had to make his tyres last until the end of the race, i.e 20 more laps. Lap times don't say anything about the pace unless the driver has clear track ahead of him. Anyway, Rosberg was 1.474 s behind Webber after lap 42. After lap 43, he had closed this gap to 1.160 s and after lap 44, he had closed it further to 1.050 s. After lap 46, Rosberg was 0.885 seconds behind Webber. His lap times are thus not interesting, as they were limited by Webber, who was in front of him, driving slower. When a faster driver is behind a slower driver, the gap will stabelise around some equilibrium that depends on the speed difference. If the speed difference is very large, the gap will be very small and vice-versa. If one drivers stays less than 1 second behind another driver for several laps, or closes the distance to less than 1 second, it means he is considerably faster, although it is difficult to quantify the difference accurately. You can look at Kimi Raikkonen, who followed Jenson Button from the safety car until lap 54. The gap between them on the laps before Raikkonen passed Button developed as follows starting after lap 46: 0.729 s, 0.857, 0.723 s, 0.605 s, 0.479 s, 0.664 s, 0.428, 0.337 s. When Kimi got passed Button, he pulled away with 4 seconds per lap and opened up a 39.434 s gap in less than 8 laps. So I guess this shows that for Rosberg, it was out of the question to follow Webber closer than half a second, as he wasn't 4 seconds faster per lap. But that doesn't mean he wasn't faster when he managed to close to within one second.
Stradivarius wrote:I would then like to ask you to explicitly explain when he showed this true pace that impressed you so much.
Is this a joke or are you just playing around? Are you honestly asking me this?
Especially considering not only what i wrote in the post but also what you wrote here below.
It's not a joke, I would like an answer. Instead of writing: "If you mean lap 16 and 17...." or "If you are refering to lap 41 to 44" I thought it would be convenient to know precisely which laps on which you base your conclusion, as it is then easier to answer directly to that. At some time Rosberg had rubber in his front wing, which slowed him down and at other times, he was in traffic. But some times he showed a pace that was within half a second of what Vettel was doing. Therefore it is important to be specific about what laps you are refering to.
Stradivarius wrote:You seem to be very impressed with what Vettel did on lap 1 and 2, and also the laps he did after Rosberg pited. But if you study the lap times, you will see that this big difference at the beginning was due to Rosberg being very slow, not Vettel being very fast.
Yes very impressed at the opening laps, obviously.
So basically, you think 1:52.866 on lap 2 showed that Vettel was more than a second faster than everyone else? You do realise, I hope, that Vettel and Rosberg were the only two drivers running in clean air at that point? The tyre performance drops more in the beginning than after a few laps and Vettel was the only driver with clean air from the start. Rosberg didn't follow him, but everyone else were stuck behind him before Rosberg got his speed up.
Ok so Rosberg was just slow. How about Alonso? New tires, 5 tenths of Vettel on 26 laps old tires.
Maybe everyone was just going slower... i guess that´s the only thing that makes sense when you are trying to downplay the utter dominance displayed by Red Bull.
Again, what laps are you talking about? Well, Vettel had 26 laps old tires only once in the race, and that was just before he made his last stop at the end of lap 44. But you say that Alonso then had new tyres, but this is not true. Alonso had stoped 8 laps after Vettel, so what he had was 18 laps old tyres, which is very different from having new tyres. Also, Alonso was held up by Hamilton until the end of lap 43. So could you be refering to Alonso's lap 44, when he did 1:51.082? Well, this is 5 tenths slower than Vettel's time on lap 42, but then Vettel had 24 laps old tyres, not 26. So this is not clear to me, I can't find the evidence you are refering to, please be more specific. Please also remember that Alonso was on a 35 lap stint lasting until the end of the race, so he probably didn't push very hard at this time. Vettel, on the other hand, was headed into the pits to change his tyres and didn't have to save anything. Knowing that pit stops some times offer problems that cost time, Vettel probably wanted a good margin. He came out a few seconds behind Alonso and I doubt he would have liked to have any smaller margin than that.

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SectorOne
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Yea as i have said, the bar has been set so low that you are asking questions you yourself answer right after it.
we can continue and i can dissect your post again and you will respond with another wall of text, probably a tactic so people just give up and say ahh f*ck it let him figure it out himself.
So since i´m a man of my word. When i realized you set the bar so low that you had no idea you were asking questions you answered yourself i said i´ll stop responding.

There´s so many examples in your post above where you ( i presume) deliberately read half the sentence and ignored the rest of it, then wrote 500 words on the deliberate wrong information you took from my post.
That pisses me off beyond everything else so since you have showed your true colors here i´ll just stop before it gets out of hand.

It´s amazing you get upvoted for it as well, it´s like they don´t even read the post, they just upvote it without actually understanding the fallacies in your post (pretty much all of them, and they are quite obvious if they read my post because they would see how you pick and choose bits from sentences and puzzle it all together to something that has no truth in it).
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