Lotus E20 Renault

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ringo
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Re: Lotus E20 Renault

Postby ringo » 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.
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raymondu999
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Re: Lotus E20 Renault

Postby raymondu999 » Wed Feb 15, 2012 3:29 am

Yeah there are a few elliptical features I can see :P
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Blackout
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Re: Lotus E20 Renault

Postby Blackout » 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

ringo
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Re: Lotus E20 Renault

Postby ringo » 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.
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munudeges
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Re: Lotus E20 Renault

Postby munudeges » 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.

Tozza Mazza
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Re: Lotus E20 Renault

Postby Tozza Mazza » 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.

Pierce89
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Re: Lotus E20 Renault

Postby Pierce89 » 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.
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raymondu999
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Re: Lotus E20 Renault

Postby raymondu999 » 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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willga
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Re: Lotus E20 Renault

Postby willga » 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.

Gridlock
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Re: Lotus E20 Renault

Postby Gridlock » 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 ;)
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madly
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Re: Lotus E20 Renault

Postby madly » Mon Feb 20, 2012 2:30 am

HiRes photos (right click & view):

Diffuser:

Image

Image

Owen.C93
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Re: Lotus E20 Renault

Postby Owen.C93 » 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 ;)

dren
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Re: Lotus E20 Renault

Postby dren » 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.
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bill shoe
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Re: Lotus E20 Renault

Postby bill shoe » 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.

madly
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Re: Lotus E20 Renault

Postby madly » 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.




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