Lotus E20 Renault

A place to discuss the characteristics of the cars in Formula One, both current as well as historical. Laptimes, driver worshipping and team chatter does not belong here.

Post Wed Feb 15, 2012 3:26 am

Off paint scheme topic, but this car will be a challenger.
The R31 had pretty good aspects which were shadowed by the exhaust system, but were carried over to this car.
For Sure!!
ringo
 
Joined: 29 Mar 2009

Post Wed Feb 15, 2012 3:29 am

Yeah there are a few elliptical features I can see :P
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raymondu999
 
Joined: 4 Feb 2010

Post Wed Feb 15, 2012 12:44 pm

stefan_ wrote:This is from an interview with James Allison for the Lotus website.

WITH SO MUCH DEVELOPMENT STILL ON GOING AT THIS EARLY STAGE OF THE SEASON, HOW DIFFERENT WILL THE E20 THAT SITS ON THE GRID IN MELBOURNE BE TO THE CAR WE’VE ALREADY SEEN AT JEREZ?

The car we take to Melbourne will be significantly different to the one we ran in Jerez. There’s a lot of work still to do before the season opener, and so many elements will change; the front wing, rear wing, side pods, pod vanes, engine cover, barge board, floor, some suspension elements, and some small brake duct features to name but a few! As always, it’s going to be a very busy few weeks.


+ front vortex generators* and tea tray, said Allison earlier
* wich ones :?: the dolphin fins under the nose or the vanes below the front brake ducts, or all of them :-k
Blackout
 
Joined: 9 Feb 2010

Post Sat Feb 18, 2012 12:10 am

raymondu999 wrote:Yeah there are a few elliptical features I can see :P

damn right!

But on a more detailed note, this team was always good at suspension. Slow speed turs are even more critical this year without the blown diffusers. This team went through hell trying to make the FEE work last year in slow speeds. All that effort and experimenting will be invested in this years suspension i believe.
For Sure!!
ringo
 
Joined: 29 Mar 2009

Post Sat Feb 18, 2012 1:51 am

Mechanically they've always been pretty sound so without much of a blown effect in slow corners that will be pretty important.
munudeges
 
Joined: 10 Jun 2011

Post Sat Feb 18, 2012 11:42 pm

Strangely enough Mr Grosjean has said the car 'feels' best in high speed corners. I'm hoping this teams pre-season promise becomes a reality. 2011 was too same-y.
Tozza Mazza
 
Joined: 13 Jan 2011
Location: UK

Post Sun Feb 19, 2012 3:51 pm

Tozza Mazza wrote:Strangely enough Mr Grosjean has said the car 'feels' best in high speed corners. I'm hoping this teams pre-season promise becomes a reality. 2011 was too same-y.

Unfortunately the F1 circuit no longer contains many high speed corners, and even fewer are important to lap time.
“To be able to actually make something is awfully nice”
Bruce McLaren on building his first McLaren racecars, 1970

“I've got to be careful what I say, but possibly to probably Juan would have had a bigger go”
Sir Frank Williams after the 2003 Canadian GP, where Ralf hesitated to pass brother M. Schumacher
Pierce89
 
Joined: 21 Oct 2009

Post Sun Feb 19, 2012 3:56 pm

Doesn't matter much that Jerez doesn't have many does it though? If he feels it's good in fast corners; most other circuits have fast corners anyways.
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raymondu999
 
Joined: 4 Feb 2010

Post Sun Feb 19, 2012 6:46 pm

MIKEY_! wrote:It's such a step down from gold. It doesn't really remind me of the old lotus colour scheme anymore.


fussell wrote:In relation to the cream paintwork

I have been told by a professional model maker (at a company that makes models for manufactures), the original Lotus didn't have gold paintwork, but something they called 'sign writers gold' which is a beige/cream colour. However I do think this is on the cream side, or maybe because the lines are a lot thicker?


The 'gold' on the 70's cars was a cream colour - for better contrast.
I've Gunnar Nilsson's old sidepod hanging on my wall.
willga
 
Joined: 21 Aug 2008

Post Sun Feb 19, 2012 6:57 pm

willga wrote:I've Gunnar Nilsson's old sidepod hanging on my wall.


Feel free to measure the width of the pinstripe and send that over to Genii ;)
#58
Gridlock
 
Joined: 27 Jan 2012

Post Mon Feb 20, 2012 2:30 am

HiRes photos (right click & view):

Diffuser:

Image

Image
madly
 
Joined: 11 Feb 2010

Post Mon Feb 20, 2012 2:34 am

That diffuser looks a bit weird, the sides don't fully extend and curve much sooner effectively extending the exit zone of the diffuser and working tighter with the rear tyres.
Motorsport Graduate in search of team experience ;)
Owen.C93
 
Joined: 24 Jul 2010

Post Mon Feb 20, 2012 3:18 am

The outer most turning vanes look like they are turning the diffuser flow 90 degrees just rear of the tires. It's expanding the flow vertically and horizontally. I figured the rear tires would mess up with the flow and cause a lot of bad interaction in this area.
Honda!
dren
 
Joined: 3 Mar 2010

Post Mon Feb 20, 2012 6:31 am

Regarding the purpose of the odd side-facing diffuser exits--

Don't think interaction with the rear tires, instead think interaction with the (closer) "brake duct" cascade wings just inside the tires.

My guess is that the outer corners of the diffuser are a bit forward and sideways-facing so that the diffuser air exits more directly underneath/behind the "brake duct" winglets on the rear corners. By connecting the outer edges of the diffuser to the "brake duct" wing cascades you should be able to get some airflow synergy. The brake duct cascades help pull more air through the diffuser. Neat. There's something deliciously creative about the way the side-exit diffuser geometry accomplished this.

This overall system may also be an effective way of passively clawing back some of the blown-exhaust sealing at the diffuser edge that was done last year. Notice the Renault seems good in fast corners even though they do not resort to exhaust outlet trickery a la McLaren, Sauber, etc.
bill shoe
 
Joined: 19 Nov 2008
Location: Dallas, Texas, USA

Post Mon Feb 20, 2012 9:33 am

I agree with Bill Shoe. On the first photo there is visible fow-vis on the left inside wheel cover, and at the right side there are visible rear wheel winglets. Definitively there is some creative way in diffuser exit treatment.
madly
 
Joined: 11 Feb 2010

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