bill shoe wrote:Traction Control Issue- The engine has severe fluttering or misfiring sounds throughout the video. This is a clear contrast to the moments when the engine is pulling clean. Something is going on. The odd fluttering sound occurs right after gear changes.
The rules used to allow (and may still allow) 200 milliseconds for the computer to actively control the throttle after a gearchange. The was because the throttle needed to be actively controlled for the gearchange itself. If I remember correctly, Ferrari was the first to take advantage of this loophole to create 0.2 second bursts of traction control after gearchanges. The interesting thing is that the burst in the above video seems to be longer than 200 ms. Less than 1 second, but more than 200 ms. Perhaps after the 200 ms closed-loop traction control phase there is an open-loop transition phase back to the regular engine map, and this transition has the effect of making the fluttering noise longer than 200 ms.
I made a bit of a guess above, but anyone who wants to claim there is no traction control needs to come up with some kind of plausible explaination for the severe fluttering noise. A statement that Ferrari would not break the rules is not a functional explaination in this regard.
Something I noticed in that video, no lights on the wheel until right at the end where he appears to turn them on to do a practice start. He must be short shifting or otherwise he would be hitting the limiter. Very wierd things going on in that video. The flutter I have heard before on other cars this year and last year though.
, i've seen those stripes before , they use to notice the propagation of heat on the exposed surfaces ( race condition) to define the carbon density to apply, after some laps they find the initial stripes with different degrees of colors.
=D>
