maybe video microphone.Quote:
Originally Posted by Toyoda
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maybe video microphone.Quote:
Originally Posted by Toyoda
Hissy in this alsoQuote:
Originally Posted by dimviii
https://m.youtube.com/watch?v=i-cwgyrAsX4
Other observations are less tail happy than hyundai, they (Hyundai )may still not have solved the grip issue, also traction aid or shudder under acceleration on the vw is more pronounced? Just speculation on the footage, take my comments with a grain of salt :)
Quote:
Originally Posted by Fast Eddie WRC
Ogier for sure
I think we are attaching too much value to the aerodynamics... I don't think they are as important as we think they are. Even a formula one car can't actually generate much downforce until they reach 120 plus, and that is towards a smooth track.
Rally cars rarely reach above 150 and the number of smooth asphalt events is quite limited. Having small unsprung weight and a well sorted suspension is much more important in my eyes.
Even though the Hyundai is the least aero focused car it doesn't mean it will be slow...
The Peugeot 205 beat the competition from start without having any aero at all.
make sure you communicate this to the teams, they spend money for no reason on aero R&D all these years while the answer is simple.Quote:
Originally Posted by itix
Here our video from Hyundai Gravel Tests at Costa Brava!!
Strange that John Kennard is not at codriver seats, and his place it´s occupied by Seb Marshall.
https://www.youtube.com/watch?v=l6dRhlMMuFc
To be fair, in the beginning of the 205's victory parade it came up against bad, undriveable Audis and 2WD Lancias and Renaults, who themselves had very little aero as well. Later that changed (and the 205 still won, so I'm not trying to devalue its worth). But regarding the aero's importance, is it only on tarmac that they reach those speeds (Finland, Poland, etc jump to mind)? Also, F1 is entirely different at every possible level, so using that as a marker might be misleading IMO.Quote:
Originally Posted by itix
I was there since the begining and saw Marcus doing the recce for the stage, so since early morning I was pretty sure who was the driver ;)Quote:
Originally Posted by Fast Eddie WRC
Mikkelsen
https://youtu.be/IMifUFDN8Gc
Always remember this: the problem on gravel is grip.Quote:
Originally Posted by itix
Grip for simple "ax" (as in bilen axar ut från kurvan bra)
Grip for braking
Grip for cornering
Whole point of aero is to increase grip. It CAN easily creat down force at average speeds around 100 km/hr..
The problem is if you make it so it increases downfrorce and thus grip at 100 km/hr then it will cost a lotta speed higher up..
Example back to the late 80s..Opel Kadett E model..Great car in the GSI model with GMs wonderful 2,0 XE 16v..
Its a clean car aerodynamically..
Put it on a flat section of motorway and it took only about 7+8hp to drive down the road at 100 km/hr...
but to run that same clean car to 210 km/hr it takes all 150 hk it makes.*
Air Resistance goes up at some cube function..
So make aero work at "average SS sped" of 100 km/hr and you better have LOTS of power or it costs ax and top speed.
Another simple example is "Big Wing" Escort Cosworth vesus no wing Escort Cosworth..
Big Wing cars went 225 km/hr top speed.
No wing cars did 246..
Todays cars are little bitty 1600cc engines...
You could say that's barely 8% smaller than old GpB 205.. but they had a 44mm restrictor...vesus a tiny little thing now...They also had turbos that look like it came off a 6 liter turbo diesel truck...
They could afford to trade some downforce at SS average speed because they had abundant power.
No sure how much excess power todays things have with limits on intake valve size, turbine and compressor wheel limited and the engine volume limited.
*these figures were straight from an old friend Ola Strömberg in Örebro who did a few events in a GpA version. He might know something, especially coming from all those years in the very aero Saabs..
Aero is inferior compared to the gains to be made elsewhere I meant, I'm sure you understood that...Quote:
Originally Posted by N.O.T
Of course when you have maximized the other aspects of your current homologated package you will chase aero.
Let's be realistic, stages have been won plenty of times without rear wings, wheel arches gone etc etc...
Have you seen Solberg in Mökkiperä or Neuville in Finland last year? :pQuote:
Originally Posted by itix
They didn't win the stage without a rear wing for sure.
can you name one, because i cannot remember...Quote:
Originally Posted by itix
Remember how much time Latvala lost in Wales 2014 without rear wing... The rear end of the car was all over the place.
S10 Impreza WRC had something like 100kg pressure at 100kph, that's quite a lot. Correct me if I'm wrongQuote:
Originally Posted by tommeke_B
John Kennard @JKCoDriverQuote:
Originally Posted by Atob WRC
@sebmarshall Cheers for filling in at Spain test..giving me an extra week with this view out of my office instead������
https://pbs.twimg.com/media/CsoXbkEVYAA21SA.jpg
Even very small rear spoiler on R5 Fiesta makes big difference, very difficult to drive without it
Latvala
https://youtu.be/5l5YFWN3duw
Definitely possible, maybe even more. A tiny formula student car from my Alma Mater is able to produce 60 kg downforce @ 60 or 80 km/h by it's wings (I don't remember exactly) and that's something as small as a go kart and the force is growing with the speed squared.Quote:
Originally Posted by SubaruNorway
https://eforce.cvut.cz/data/articles...eport_4_04.jpg
i believe it is quite the opposite.Quote:
Originally Posted by itix
formula 1 cars need to be able to reach speeds of over 300km/h, so they actually cannot use really big wings.
they have long straights, and few corners, so they rarely have a lack of traction. but most importantly: without a high top speed they can't overtake.
rallying is completely different. you often don't have enough traction, but very few moments where you hit top speed. and you don't need to overtake.
so here it is much better to sacrifice some top speed to gain traction through a much bigger wing.
Going sideways seriously disturbs the airflow both under and over the wing.Quote:
Originally Posted by denkimi
Going back to my example - the student formula is good to show that relatively large downforce is possible even at low speed. I was actually really surprised how much aerodynamic downforce can help on a twisty narrow track where the cars can't reach over 130 km/h and which looks nearly like a slalom between the cones. This particular car has active wings so that it can accelerate better because the max drag configuration is quite slow at straights (with opened wings this one does 0-100 @ 3,1s).Quote:
Originally Posted by denkimi
It seems that begins to gain some speed...
Today Tests Yaris wrc!
https://www.youtube.com/watch?v=gsai39eVPYE
nice photo from Paddon testing
https://pbs.twimg.com/media/Cs0zXA7WIAAFHWC.jpg:large
As is shown in the recent shot of Hayden testingQuote:
Originally Posted by Mk2 RS2000
unless it is designed to cope with that.Quote:
Originally Posted by Mk2 RS2000
if you expect the cars to be sideways all the time, like on gravel, you can design the wings so that it still creates downforce in that situation. that's why wings on rally cars are so different than those on circuit cars.
Ogier in Tarragona today.....
https://pbs.twimg.com/media/Cs9yIkfXgAAxA3t.jpg:large
https://pbs.twimg.com/media/Cs9yPhfWgAAJ2_8.jpg:large
A bit easier to check out the changes in gravel spec. Definitely looks different head-on but can't quite put my finger on what has changed. Bigger front radiator area maybe?
https://www.youtube.com/watch?v=lMkTaVlqSVM
different sound at antilag.Quote:
Originally Posted by Simmi
https://scontent-bru2-1.xx.fbcdn.net...f2&oe=586FE8E2
any more info of what that measures?
It's a pitot tube.It is used to measure air speed.
Andolfi testing for Corsica
https://scontent-bru2-1.xx.fbcdn.net...92951367_o.jpg
https://youtu.be/gYSV6ChA91g
Kevin Abbring @KevinAbbring
Preparing @TourdeCorseWRC in stunning #Corsica! One of the most beautiful and challenging places to turn our #NGi20R5 wheel! @sebmarshall
https://pbs.twimg.com/media/CtHPOxlWYAAPoRL.jpg
Nice livery :)Quote:
Originally Posted by dimviii
Meeke and Breen are ready for testing for Tour de Corse today..
https://pbs.twimg.com/media/CtMXc38WcAAHevm.jpg:large
is it a new front bumper?
https://pbs.twimg.com/media/CtN0ns7XYAAVb_x.jpg
https://pbs.twimg.com/media/CtN0ns8XYAAhYMJ.jpg
Extreme Shox @extreme_shox
Good test days at @TourdeCorseWRC with @HMSGOfficial. @HaydenPaddon #ext #extremeshox
https://pbs.twimg.com/media/CtQjBPHWcAAV94I.jpg
For sure that car is looking different at the front now. Bigger radiator intake area. The lights look bigger but that might be an illusion.
Young rally driver test on altitude the new Citroën C3 WRC 2017!
Video by Jaume Soler
anybody know who is the driver?
https://www.youtube.com/watch?v=jb28rNtEjMI
Emil?Quote:
Originally Posted by dimviii