Odd Engine Note Changes During On-Board Shots

[Shiny Side Up!]

haven't seen any discussion of this, if I have missed it and it is another thread I apologize!

Has anyone noticed the engine note skipping around quite a bit in the on-board shots? At first I thought it was miss-shifts - and during the qualifying telecast, one of the SPEED commentators also noted it when on board with someone in Q3...

But in retrospect I think what I was hearing is the effect of KERS - when it kicks in, it sounds almost as if the driver downchanged at the wrong time (instant rev climb), and when it cuts out it sounds as if the driver upchanged at the wrong time (instant rev drop).

That also got me wondering about how the teams might change their gearing strategy to incorporate KERS. Clearly, the car's top speed in 7th gear would change drastically with 80bhp more - but according to Matchett on SPEED the drivers have been instructed by the teams to use a little bit of KERS spread around the track instead of all in one shot down the main straight - which would indicate that KERS is used in different gears around the track.

Anyway, interesting stuff - looking forward to the race to see how it plays out!

[Callum]

Yeah i heard the same, at first i thought it was just a dodgy camera feed but i think it is the KERS being used. It's been briefly spoken about in the aussie GP general thread.

cant wait till the race:D

[myurr]

At first I thought it was KERS too, but it also happened on the Brawn and Williams on board shots and they're not fitted with KERS. So it has to be something else.

The only thing I can think of is wheelspin, but that doesn't seem to fit with what was happening on the video.

[wesley123]

i had the same, it sounded like the engines were misshifting all the time, but i noticed it is the KERS

[Scuderia_Russ]

Misshifting or short shifting?

[PNSD]

The best description I can give is it seems the drivers are trying to get that last gear just before braking down...

Obviously this isnt the case but its what it sounded like.

The camera feed has not been great all weekend, I just assume is a bad signal.

[Giblet]

That odd rev jumping was noticed by myself as well.

it sounds more like a glitch you would hear in a racing video game then in real life.

It might have something to do with the drivers being used to 19000 and hitting the rev limiter might be squaring off the throttle on heavier braking with the 18000 red line.

[Paul]

I think it's just a camera signal issue when the car is passing under a bridge- and there are lots of these in Albert Park.

[cbjones1989]

At first i also thought it was KERS then I noticed it on the non-KERS cars.. Id imagine they'd have to make a gearbox that would accomodate KERS even if they were not initially running KERS so I assumed it was something in the gearbox that would switch to charging the KERS device.. Then i realised that if they werent running KERS they could probably take that out/deactivate it with the engine maps etc.. If it was a dodgy signal wouldnt it have happened at other places? I only noticed it during downshifts.. peculiar.

Im preffering this:

That odd rev jumping was noticed by myself as well.

it sounds more like a glitch you would hear in a racing video game then in real life.

It might have something to do with the drivers being used to 19000 and hitting the rev limiter might be squaring off the throttle on heavier braking with the 18000 red line.

[Belatti]

I have been wondering the same since qualy.

If you look at Lewis on board camera at lap 48 you will realice:
1) KERS are not being applied while the Odd Engine Note occurs
2) It happens in 6th gear between 16000 and 17000 rpm son its not a rev limiter issue

I remember to have heard something similar in Raikkonens car at Monza while qualifying (last flying lap) in 2006, before parabolica.

[sidny]

i'm pretty sure it would be the tv feed. sound and vision traveling differently ? it must be some sort of delay. also, the dashboard or steering wheel display ( rev counter) is slightly behind the actual gearchange. to sum up , i think it's just the audio/visual sync'. cheers.

[mike]

i think it could be the gearbox(im not a gearbox pro) because, higher reving engines are smoother in the shifting(what i heard), it could be the zeroshit system having issues with the higher gear over-driving the lower gear which can cause sudden shock in to the drivetrain.
i dont exact understand how, but its to do with the higher gear coming to speed quicker and the gearbox has to disenage the lower gear earlier.

As to why you heard it in monza 2006 i think thats kimi shifting to 7th just before the braking to parabolica.

[DaveKillens]

Apparantly more than just the fans listen to engine notes. As a result of audio analysis, it appears there are problems.
http://www.pitpass.com/fes_php/pitpass_ ... t_id=37402

[PNSD]

I have a feeling it could be april fools?

[Callum]

I had a thought yesterday, that maybe its an EMP pulse messing with the camera/audio system, coming from the KERS.