Red Bull RB9 Renault

[turbof1]

All missing the obvious

It is Kers harvesting under traction.

I posed this question to Peter Windsor last year, and he confirmed on his podcast that KERs harvesting was being carried out under part throttle conditions.

Also, bear in mind, webber came to almost a complete standstill, floored it, the car was square, almost no lateral load.
One would suggest that the rate of load applied by the unit would increase exponentially (gear dependant) as revs get closer to the peak torque number, in conjunction with rev limiter, it may have set up the harmonic we are seeing.

+1 from me mate. The traction control speculation became a little bit too wild.

[WillerZ]

All missing the obvious

It is Kers harvesting under traction.

I posed this question to Peter Windsor last year, and he confirmed on his podcast that KERs harvesting was being carried out under part throttle conditions.

+1 from me mate. The traction control speculation became a little bit too wild.

As I understand the regulations, KERS should not be harvesting unless the driver is activating the brake pedal at the time. I thought, at the time it came out, that KERS harvesting under part-throttle conditions meant drivers using both pedals simultaneously to keep KERS topped up when there wasn't enough normal braking energy to do the job: during the warm-up lap, behind the safety car, etc.

Happy to be wrong…

[techF1LES]

'Wheel hop' conversation between Steve Matchett and Williams F1 engineer Richard Saxby:

The near draconian FIA control of current ECUs would thwart any attempt at TC. What we're seeing is the car bouncing at a natural frequency.

2 stage dampers high freq low damping bump/rebound under squat and minimal DF, promoting wheel hop...

Yep, all of that seemingly combined with undamped torque wind-up, producing drivetrain vibrations/oscillations.

15Hz I calculated. 7 post produces 20-25Hz all connected and base line setup.

[Huntresa]

Its pretty sad seeing all the so called news sites reporting Red Bull cheating etc... Almost worse then some of the car threads on this forums at times, *cough* Mercedez *cough*

[Tim.Wright]

Yep, all of that seemingly combined with undamped torque wind-up, producing drivetrain vibrations/oscillations.

This is basically what I was saying. I suspect that whatever oscillation this was, has been excited by Mark dumping the clutch or the anti stall kicking out or both.

[Pierce89]

All missing the obvious

It is Kers harvesting under traction.

I posed this question to Peter Windsor last year, and he confirmed on his podcast that KERs harvesting was being carried out under part throttle conditions.

Also, bear in mind, webber came to almost a complete standstill, floored it, the car was square, almost no lateral load.
One would suggest that the rate of load applied by the unit would increase exponentially (gear dependant) as revs get closer to the peak torque number, in conjunction with rev limiter, it may have set up the harmonic we are seeing.

KERS harvesting under part throttle deceleration I can agree with, but Mark wasn't part throttle and he wasn't decelerating. Kers harvesting isn't pulsated either as far as I know.

[Pierce89]

The point of it is to do exactly the opposite, compromise ultimate performance in favour of making the package easier to hold at the limit.

Make the package easier to drive (on the limit) by having an unpredictable torque map with peaks and troughs?

Regardless of what you think of the theory, MotoGP factory teams were all using "Big Bang" motors. They weren't really sure why it helped traction, but factory engineers were quoting the same theory Phillip expounded.

[flynfrog]

The big bang motors produce a smoother torque output trying to get away from the big pulses.

[youtube]http://www.youtube.com/watch?v=Myfp2sUducE[/youtube]

[BreezyRacer]

My God, if someone out there thinks that RB is using traction control and that these tire marks are the evidence then perhaps they could also explain the very long continuous black marks leading to the chatter. Jeezzzz

[Hobbs04]

Is there anyone who has the Singapore gp from last year or 11? I distinctly remember cars accelerating out of turn 14 laying down some signicant skid marks. I've slept a few times since then but I think it was Alonso defending from Webber.

[raymondu999]

Is there anyone who has the Singapore gp from last year or 11? I distinctly remember cars accelerating out of turn 14 laying down some signicant skid marks. I've slept a few times since then but I think it was Alonso defending from Webber.

I have both races in 50fps 720p glory

[Hobbs04]

Im trying to find evidence from other instances where cars left similar marks. Can you review singapore 2011 and see if the acceleration tire friction marks off of turn 14 resemble Webbers recent so we can put this traction control hype to bed. Or PM the file.

[flynfrog]

Im trying to find evidence from other instances where cars left similar marks. Can you review singapore 2011 and see if the acceleration tire friction marks off of turn 14 resemble Webbers recent so we can put this traction control hype to bed. Or PM the file.

I don't think any one really believes it is TC.

[spiritone]

You could be wrong.

[wesley123]

You could be wrong.

How so?