[WEC Race] WEC Round 8: Brazil

[TF110]

Originally Posted by GasperG

Obviously they rounded those numbers a little.

TF110, what I meant, in the calculator you linked you must imput altimeter pressure, this is pressure at sea level, not the pressure from the weather station, so you must add around 90 mBar to the weather station numbers, and you then get around 89% from that calculator.

I used the mBar from the race data. I took the information from the fia sites. From the live timing and from the alkamel systems post-race- http://fiawec.alkamelsystems.com/Res...Meteo_Race.PDF

[ATLFalconsFAN]

Originally Posted by Graham Goodwin

You are entirely incorrect - Brendon Was amongst the fastest and most consistent of the Porsche drivers - The #20 car was apparently down on boost, something we were seeing (and commenting on) from midway through the race.

I happily stand corrected.

I hosted a party with a few other people while watching the race. Happy to say I converted someone who had formerly never seen any form of sports car racing. Consequently I missed hearing some of the commentary.

[Graham Goodwin]

Originally Posted by ATLFalconsFAN

I happily stand corrected.

I hosted a party with a few other people while watching the race. Happy to say I converted someone who had formerly never seen any form of sports car racing. Consequently I missed hearing some of the commentary.

A sportscar racing party - the very best kind!

[Ephaeton]

TF110, AFAIUI, GasperG hints that, you've accorded for the height above sea level twice.
Once directly, by inputting altitude above sea level,
and once indirectly, by inputting the pressure as measured at the weather station
(which is at the sea level you were talking about, so already does include the lower pressure for its own altitude above sea level).

Enter an altitude of 0 and the other data from the live timing, et voila -> 89.x%.

[GasperG]

I know, read my post again. Data from from Fia site is from weather station at 785 m, data that you must input in calculator is sea level equivalent, because it then calculates actual pressure back with altitude data.
http://www.engineeringtoolbox.com/ai...ure-d_462.html

[JABWOA]

What exactly happened with Webber and the Ferrari? Car failure or driver failure? Can't find any details apart from reporting of the tv footage.
Thanks.

[chernaudi]

I can't say for sure, but a photo I saw that was taken after the accident might be a clue. There's no tire on the right rear rim of the Porsche.

http://fourtitude.com/emAlbum/albums...o-Audi-305.jpg

Whether that was a cause or effect, I don't know, but there's no evidence of there being a tire on that wheel, and there's significant damage to the rim, too.

[Spyderman]

A read somewhere that Webber hit the Ferrari whilst already out of control. If that is true or not is beyond my limited knowledge , but it does seem plausible.

[Graham Goodwin]

Mark was already having his accident before the Ferrari was involved.

[seanyb505]

I don't recall any replay of the 20 onboard camera for the accident. Yes I was also busy working on the sportscar party convert, but I'm sure we did see a short clip from the 20 when they were leading early on. Maybe John even said something to the effect of, "This is what it looks like from the lead, like he's out on a nice Sunday drive."

[Nine17]

Hello, all! It's been years, but I can't help but chime in because the silence has been deafening...

I can't quite figure out how to post the screen capture here, but freezing the Autoweek YouTube video at 1:44 shows Weber's #20 Porsche 919 sliding backwards past the apparently as-yet undamaged Ferrari's left side with the right rear corner/fender of the Porsche conclusively showing major damage and no sign of a tire -- just before its massive impact with the wall.

Given that our video vantage point shows track-out from a high-speed left-hander, circumstantial evidence points to a failure of the right rear Michelin, destroying the fender and pitching the car into an instant 180-degree oversteer condition -- when grip vanished where it was needed most.

It's not surprising that Porsche isn't going to cast aspersions on an important partner until all the data have been analyzed.

Happy Holidays!

-- David

[chernaudi]

I'd have to say that the #20 either ran over something or the car got hit by something, because there was no tire on that rim, and the rim itself had some huge chunks missing out of the outside edge, like it was struck by something that deformed it.

Could be a definite puncture, be it the tire going over something or something gouging the rim.

[joeb]

Originally Posted by Nine17

Hello, all! It's been years, but I can't help but chime in because the silence has been deafening...

I can't quite figure out how to post the screen capture here, but freezing the Autoweek YouTube video at 1:44 shows Weber's #20 Porsche 919 sliding backwards past the apparently as-yet undamaged Ferrari's left side with the right rear corner/fender of the Porsche conclusively showing major damage and no sign of a tire -- just before its massive impact with the wall.

Given that our video vantage point shows track-out from a high-speed left-hander, circumstantial evidence points to a failure of the right rear Michelin, destroying the fender and pitching the car into an instant 180-degree oversteer condition -- when grip vanished where it was needed most.

It's not surprising that Porsche isn't going to cast aspersions on an important partner until all the data have been analyzed.

Happy Holidays!

-- David

Thanks David, that was a pretty thorough analysis. I also suspect Porsche will not be rushing to release the details of the accident, even though the fans would like to know.

[Hawkwood]

Does anyone have a link to the (I think) German website where the guys make the easy-to-understand charts of fastest laps and top speeds?
I thought I'd bookmarked the page but I seem not to have done.

[J Jay]

You mean the "Reports" section of GT-Eins?

The lap charts for Sao Paulo aren't up yet, and I don't know how long it will be (my lazy backside just waits for them to kindly repost the charts here!)

[Hawkwood]

Originally Posted by J Jay

You mean the "Reports" section of GT-Eins?

The lap charts for Sao Paulo aren't up yet, and I don't know how long it will be (my lazy backside just waits for them to kindly repost the charts here!)

That's the one! Thank you