Red Bull RB7 Renault

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gioma
gioma
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Joined: 02 Mar 2010, 00:08

Re: Red Bull RB7 Renault

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At the end of the page there is a nice picture of the exaust exiting on Red Bull RB7 got on Friday morning at the Australian Grand Prix.

http://en.espnf1.com/f1/motorsport/story/44769.html

Robbobnob
Robbobnob
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Joined: 21 May 2010, 04:03
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Re: Red Bull RB7 Renault

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thats Torro Rossa's Exhaust.

Thinking about RBR running more rake, that must mean that their splitter has a lil bit of flexing magic going on as well.
"I continuously go further and further learning about my own limitations, my body limitations, psychological limitations. It's a way of life for me." - Ayrton Senna

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horse
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Joined: 23 Oct 2009, 17:53
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Re: Red Bull RB7 Renault

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Lindz wrote:
Mchamilton wrote:http://mclarenf-1.com/index.php?page=srs&s=7The rear wing and camera mount heights on the RB7 are higher than the McL, which if you go to any side view comparison, is because the RB7 has a lot more rake.
That's weird though. The cameras must be at the same height when stationary right? The roll hoop is forward of the rear wheels so the rake must be being generated by lifting the rear of the car. How does that work? Is she not coming down of a bump so the rear suspension holds the car in the air? I don't know, seems weird to me, I'm not convinced we're getting a genuine comparison from those photos.
"Words are for meaning: when you've got the meaning, you can forget the words." - Chuang Tzu

shelly
shelly
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Joined: 05 May 2009, 12:18

Re: Red Bull RB7 Renault

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Robbobnob wrote:thats Torro Rossa's Exhaust.

Thinking about RBR running more rake, that must mean that their splitter has a lil bit of flexing magic going on as well.
Agree on that. If you have a method to overcome flexibility rules, then you would aplly it in every place it gives you the advantage: front wing, tea tray, floor in front of rear wheels, maybe rear wing mountings also.

Tea tray flexing will allow you to lower front wing without excessive rake.

Question related to this: why can rb7 run with significant highwer rake than competitors, without losing rear downforce?
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horse
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Joined: 23 Oct 2009, 17:53
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Re: Red Bull RB7 Renault

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horse wrote:How does that work?
Another idea oh how the raise the rear is to have very stiff front suspension and very compliant rear suspension. Then the downforce of the front wing will cause the chassis to pivot about the front wheels lifting the rear and centre of the car. That's one short lever though!
"Words are for meaning: when you've got the meaning, you can forget the words." - Chuang Tzu

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Lindz
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Joined: 09 Feb 2011, 11:01

Re: Red Bull RB7 Renault

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horse wrote:
Lindz wrote:http://mclarenf-1.com/index.php?page=srs&s=7The rear wing and camera mount heights on the RB7 are higher than the McL, which if you go to any side view comparison, is because the RB7 has a lot more rake.
That's weird though. The cameras must be at the same height when stationary right? The roll hoop is forward of the rear wheels so the rake must be being generated by lifting the rear of the car. How does that work? Is she not coming down of a bump so the rear suspension holds the car in the air? I don't know, seems weird to me, I'm not convinced we're getting a genuine comparison from those photos.
Well, since you can set up your car to run any ride height (front and rear) that you want, all regulated measurements are made relative to the reference plane. So if every car ran at the same ride height and rake angle, the regulation parts would all be in the same areas. Of course this isn't the case. With the RB7, it runs a quite high rear ride height. This pivots the car and tilts the front wing forward (and closer to the ground), but it also raises the rear (and, generally speaking, takes away downforce since the diffuser isn't as effective). Red Bull have done a very good job blowing the diffuser with their exhaust, so it helps recuperate some of that lost efficiency from the high rake.

If I'm also not mistaken, the rake will have a nice by-product of making the rest of the floor a bit more efficient since it essentially uses a flat plane like a diffuser (there is pressure difference from front to rear, which will create a bit of downforce in itself).

marekk
marekk
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Joined: 12 Feb 2011, 00:29

Re: Red Bull RB7 Renault

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It's all about self confidence when setting design goals, i think.

Most laptime is to be found in quick corners. If you really belive your car will be the quickest one lap time wise, you can sacrify top speed and not bother to much about slow corners. If you are always on pole, you don't have to overtake anyone.
If you belive you don't have to follow anyone, you can go for less draggy cooling solutions. And so on ...

It's just "win or die" type of a car. Sounds easy.
But you have to have lot of self confidence to go this way. AN has enough IMO.
And team/DM obviously support this way of thinking.

McLaren or Ferrari can't take that much risk. They can't afford to be 4th or 5th team.
The bravest wins - and i can perfectly live with this.

Reventon
Reventon
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Joined: 26 Mar 2009, 13:25

Re: Red Bull RB7 Renault

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bot6 wrote:I have a feeling my first article on the F1T wiki will be about how diffusers work.
I'll be interested in reading that. I've just read these two guides :
http://www.scarbsf1.com/diffuser.html
http://www.atlasf1.com/2000/feb16/gray.html

I'm still not 100% sure what causes the air to speed up under the floor.

Formula None
Formula None
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Re: Red Bull RB7 Renault

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Image

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dren
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Joined: 03 Mar 2010, 14:14

Re: Red Bull RB7 Renault

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I read somewhere, maybe it was here, that the Red Bull has been running some sort of hydraulic suspension coupling system front to back that levels the car. Is this true?
Honda!

mx_tifoso
mx_tifoso
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Joined: 30 Nov 2006, 05:01
Location: North America

Re: Red Bull RB7 Renault

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Split 5 pages worth of diffuser discussion, can be found here:
:arrow: Diffusers

Moved recent posts about Webber's issues here:
:arrow: Mechanical issue with Webber’s RB7

Flexible wing specific comments here:
:arrow: Flexible wings 2011
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Ferraripilot
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Joined: 28 Jan 2011, 16:36
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Re: Red Bull RB7 Renault

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dren wrote:I read somewhere, maybe it was here, that the Red Bull has been running some sort of hydraulic suspension coupling system front to back that levels the car. Is this true?
I thought all equipment such as that had been banned since Williams had suspension like that in the 90s, albeit a more complicated system

bonjon1979
bonjon1979
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Joined: 11 Feb 2009, 17:16

Re: Red Bull RB7 Renault

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horse wrote:
Lindz wrote:
Mchamilton wrote:http://mclarenf-1.com/index.php?page=srs&s=7The rear wing and camera mount heights on the RB7 are higher than the McL, which if you go to any side view comparison, is because the RB7 has a lot more rake.
That's weird though. The cameras must be at the same height when stationary right? The roll hoop is forward of the rear wheels so the rake must be being generated by lifting the rear of the car. How does that work? Is she not coming down of a bump so the rear suspension holds the car in the air? I don't know, seems weird to me, I'm not convinced we're getting a genuine comparison from those photos.
You're not getting a genuine comparison, look at the lines on the ground they run at different angles, so car is in a different position on the track. Also photos are taken from slightly different angles. I wouldn't be surprised if one was taken with the photographer stood up and the other kneeling down. So one's effectively looking down on the car, the other taken more at nose level.

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dren
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Joined: 03 Mar 2010, 14:14

Re: Red Bull RB7 Renault

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Ferraripilot wrote:
dren wrote:I read somewhere, maybe it was here, that the Red Bull has been running some sort of hydraulic suspension coupling system front to back that levels the car. Is this true?
I thought all equipment such as that had been banned since Williams had suspension like that in the 90s, albeit a more complicated system
The Williams system was an active system. I thought the one I read about was some sort of hydraulicly coupled system that leveled itself out.
Honda!

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raymondu999
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Joined: 04 Feb 2010, 07:31

Re: Red Bull RB7 Renault

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Wow! Apparently the ignition overrun means that the cars use 10% more fuel for the Renault RS27 http://www.racecar-engineering.com/news ... more-fuel/
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