Post by ~misfit~ Post by larkim Post by build Post by D Munz
What exactly happens when the break-by-wire fails? How does the
driver control the speed or even break at all. Maybe they have a
handbrake hidden in there somewhere...
The BBW did not fail. The front left disc exploded.
Wrong driver build. Unless you think Autosport got it wrong.
Artciles like this are a good example of why I dislike F1
'jounalism'. They turn up a few days after the race to try to keep up
the hype (and site traffic).
Evidence: Fernley (via Autosport) "Esteban LOST the brake-by-wire for
the last two laps." (My emphasis.)
Yet in the pen after the race Esteban said that they had "a little
failure with the brakes but that didn't stop me" and that he was
catching Bottas and Kimi towards the end and, with a couple more laps
he could have "done something".
Decide for yourself, don't let the money-grabbing psuedo-news sites
spoon-feed you pap. I suggest that Fernley didn't lie, maybe he said
Ocon lost brake by wire *adjustment* or something similar and the
journos decide to trim the quote?
Right, an hour or so of research later and I've discovered that a complete /
total failure of the brake-by-wire system *only* takes the MGU-K out of the
braking equation. The disc brakes still work. However (as I already knew)
the rear discs have been reduced in size and stopping power because the
MGU-K takes up to 4 MJ of braking force away from them per lap. So they
would get hot and the bias would have to be moved forward a few percent.
So if Ocon had a brake-by-wire failure for the last two (?) laps it only
meant he'd have to manage his brakes a little differently and perhaps lost
5% total retardation ability. It's like having 10% of the problem that Dan
Riccardo was driving most of the race with.
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)