Lotus E20 Renault

[Carlo's]

Looks quite elegant. Hope that tomorrow they will refine it a bit to gain more laptime.

[tok-tokkie]

I assume that is titanium. I have tried to polish titanium and it ain't easy - mine is dreadfully dull in comparison. Ended up with rotary polish mop & stainless steel polishing compound.

[aleks_ader]

Very small lump (if you can call it that) for the coanda, looks like they are trying to get some exhaust effect with minimal impact on the E20 normal airflow, let's see how much this brings them, given that the leading exhaust blowing teams completely commited to it, Red Bull with the ramp, Sauber going back to the ramp, Ferrari with the big duct and Mclaren extending theirs significantly.
Also (as with the Williams) hot air openings became significantly bigger.

Yes and can be with minimal efort ajusted on optimum slit gap (unbolted that little screew and bolted new plate ).. Briliant!

[aleks_ader]

Is that a bump in the metal?

Looks like it. Are they trying to utilise a coanda effect inside an existing coanda effect?

Maybe but in other pictures i canot see it ... Strange! Maybe is just optical ilusion (polishing patern)? Other opinions? Its to soon to make any conclusion...

[Arunas]

Is that a bump in the metal?

IMO it must be due to interaction with exhaust manifold undeneeth this fairing, tight packaging.

[wizzer]

I assume that is titanium. I have tried to polish titanium and it ain't easy - mine is dreadfully dull in comparison. Ended up with rotary polish mop & stainless steel polishing compound.

Titanium doesn't like hight temperature so much. I suppose it's stainless steel.

[kebab]

I assume that is titanium. I have tried to polish titanium and it ain't easy - mine is dreadfully dull in comparison. Ended up with rotary polish mop & stainless steel polishing compound.

It could be Inconel rather than titanium.

[wizzer]

Inconel could be too heavy and too expensive for that purpose.

[shelly]

I agree with kebab -could be inconel

[kebab]

Inconel could be too heavy and too expensive for that purpose.

In fact inconel is lighter than stainless steel or even duplex and is used in light weight exhaust system.

[Pandabeer]

Can anyone explain me the advantages of using a coanda-type exhaust compared to the Lotus exhaust they got beforehand?

[Nando]

Can anyone explain me the advantages of using a coanda-type exhaust compared to the Lotus exhaust they got beforehand?

I guess the main thing is you guide the exhaust gases down below the tire and diffuser edge as opposed to blowing the beam wing or what it is they are doing before.

[wizzer]

I just mean I think that Inconel isn't necessarily in that case because it's far less demanding than the exhaust piping itself. In my knowledge Inconel is slightly heavier than stainless steal but far more resitant under large heat, that allow the use of thiner pipes.

[Forza]

Lotus has confirmed that it will stick with the Coanda-effect exhausts on Kimi Raikkonen's car for the remainder of the Korean Grand Prix weekend. The team trialled its new design during Friday free practice at Yeongam and, after detailed analysis of the data overnight, the team is confident enough to stick with it.

Technical director James Allison believes that the benefits of the new concept will increase over the forthcoming races, as the team understands them better."We are at the beginning of a relatively long road with them," he said.
"It's not straightforward to make them work from the start, but the numbers we got are good so we are quite pleased."

Lotus only has enough parts to run on Raikkonen's car in Korea, but AUTOSPORT understands that the plan is for the team to be able to run it on both cars from the next race in India.
Source

[rssh]

Only Kimi is going to use the new Coanda exhaust system because Lotus says that they have only 1 spare and if something goes wrong on Kimi's exhaust they would have to take it off Romain's