Red Bull RB8 Renault

[Holm86]

Yes it has nothing to do with exhaust. No octopus exhaust here ...

[Rikhart]

I´m guessing thats what he means, and makes sense. That thing is a tube, that channels air to within the floor, that then exits in the back. Is it legal to do?

[CHT]

double skin rear diffuser

This is the double skinned diffuser.

[beelsebob]

This is the double skinned diffuser.

That's just the slotted gurney that pretty much every team has now. They had this last year too, and didn't aim exhaust gasses into it, why would they do it now?

[raymondu999]

Not right now. I could try to make one when i come home. But on the updated RB8 there is an extension on the sidepod that connects to the floor. I believe there is a tunnel inside this. If you look some pages back in this thread there is some talk about the diffuser being double layered.

Im pretty sure they are feeding this layer with hot air from the sidepods.

Aha - you mean a hollow floor; somehow fed via the sidepods? Which Paddy Lowe did describe a while back as the octopus exhaust

Has nothing to do with what mclaren attempted with what you call the "octopus exhaust". It was basically exactly the same as RB, but started from under the floor. That´s it. It had nothing to do with air from sidepods.

I was just talking of the hollow floor concept - Paddy Lowe said in an Autosport interview sometime earlier this year or late last year that the octo-exhaust was basically exhausting the engine through a hollow floor and using the floor as an exhaust exit.

But that's a topic for another day.

FWIW: I don't think it's a hollow floor - I think that's just the gurney along the diffuser edge making it look as such

[Holm86]

I´m guessing thats what he means, and makes sense. That thing is a tube, that channels air to within the floor, that then exits in the back. Is it legal to do?

Yes this is what im talking about.

And i dont thing its just a slottet gurney.

To me it looks more like a dual layer diffuser.

[horse]

You can see the diffuser gurney in this image.

[CHT]

This is the double skinned diffuser.

That's just the slotted gurney that pretty much every team has now. They had this last year too, and didn't aim exhaust gasses into it, why would they do it now?

. If you look at the right side of the diffuser there is a exit hole on the floor. Perhaps this is where the air from the bridge exit.

[Rikhart]

So if that is indeed a tube, channeling air, the tunnel underneath is merely a side-product, and not the main thing... Interesting.

Woa, just thought of another thing. Its a tube. Its directly on the path of the exhaust. BAM, super heated air channel to the diffuser!

[beelsebob]

This is the double skinned diffuser.

That's just the slotted gurney that pretty much every team has now. They had this last year too, and didn't aim exhaust gasses into it, why would they do it now?

. If you look at the right side of the diffuser there is a exit hole on the floor. Perhaps this is where the air from the bridge exit.

Can you highlight it on the image? I don't see what you're on about... We've also seen right through the tunnel, and can see exactly where it exits.

[Rikhart]

Can you highlight it on the image? I don't see what you're on about... We've also seen right through the tunnel, and can see exactly where it exits.

He´s not talking about the tunnel, he´s talking about the bridge possibly being a tube channeling air, look at my "diagram" above.

[beelsebob]

He´s not talking about the tunnel, he´s talking about the bridge possibly being a tube channeling air, look at my "diagram" above.

o.O since when is a "tube channeling air" not a "tunnel"

[i70q7m7ghw]

What bothers me with this solution, is that the pullrod is not quite at a good place for that blue stream. Actually wouldn't it work better with a pushrod this year ? For me that pullrod just doesn't fall into the puzzle. Just asking.

My feeling is that this new exhaust layout is a response to what the other teams have been doing, and was not part of the inital design of the car, hence the pull-rod not being in the ideal location. Overall though, I don't think it will cause and massive issues, but I would imagine ideally they would rather not have it in that position.

[beelsebob]

What bothers me with this solution, is that the pullrod is not quite at a good place for that blue stream. Actually wouldn't it work better with a pushrod this year ? For me that pullrod just doesn't fall into the puzzle. Just asking.

My feeling is that this new exhaust layout is a response to what the other teams have been doing, and was not part of the inital design of the car, hence the pull-rod not being in the ideal location. Overall though, I don't think it will cause and massive issues, but I would imagine ideally they would rather not have it in that position.

Honestly, I don't get why people are getting hot and bothered about the pull rod being there... It was there last year, they were channelling air around the side pods of the car in the exact same way last year... Why on earth would it suddenly become a problem now?

[raymondu999]

He´s not talking about the tunnel, he´s talking about the bridge possibly being a tube channeling air, look at my "diagram" above.

o.O since when is a "tube channeling air" not a "tunnel"

He's saying that the bridge over the "tunnel" is a duct ducting air of some sort to the floor to then be blown out. Not talking about the visible tunnel.