Mclaren Mercedes MP4-25

[segedunum]

New back end in good light compared to the old one (New first, then old):

Wow. That's shot that gives an amazing perspective on that diffuser.

[segedunum]

They rather be fourth than DNF, so it is doubtful they would run it in the race

I'm afraid not. Such is the pace of development they could lose the equivalent in points through a DNF in the next couple of races if they don't keep up.

[segedunum]

I wonder if Mclaren has routed the exhaust into the diffuser itself instead of just blowing over the top of it?

Nope. I don't think even Red Bull is doing that fully yet. The exhaust gases are too unpredictable to blow directly. Newey tried it at McLaren several years ago but it had to be abandoned.

[autogyro]

The design of the exhaust outlet has no chance at all of having the same effects on airflow at the rear as on the RB.
I would have expected much more from McLaren.
Start by moving the lower wing section up at least five inches.
Then get rid of all the covers over the exhaust outlet.
Then work out what you want to achieve.(it is not to directly blow the diffuser).

[timbo]

Seems like McLaren suffering from mechanical setup. Bumps disturb the car too much.
Ironically, new ultra-fast Silverstone seem to favor same car characteristics as Monaco.

[Holm86]

Why is this so difficult for mclaren to get this EBD to work?? they are not running it today or tomorow in the race.

Renault, Mercedes and Ferrari all were able to use it on their first try. And Mclaren have had even more time to work on it.

[jason.parker.86]

McLaren have fell foul of rushing upgrades to a car and as a result lost ground on setting up the car for Qualy.

Why Mclaren did not only introduce the upgrades to one car is beyond me. Why introduce the ugprades to both cars, at least if they upgrade to only one car they would have been able to compare the data!

That Mclaren looked VERY bumpy!

[BreezyRacer]

Just a thought ..

Maybe, since Button and Hamilton went off again this morning in P3, the problem is something other than the diffuser/aero changes?

[wesley123]

Why is this so difficult for mclaren to get this EBD to work?? they are not running it today or tomorow in the race.

Renault, Mercedes and Ferrari all were able to use it on their first try. And Mclaren have had even more time to work on it.

those cars arent as tight packaged as te mclaren

The new rear-end is just so slick .... the best ass in the field

If by slick, you mean: fat and cluttered, then I agree. Worst ass of top teams. Extremely bulky compared to RB6 and F10

Well i dont know if you ever seen it but the mclarens is alot tighter then the ferrari and probabl also then the red bull.

I know it doenst look great, but it is tighter then others

[segedunum]

Why is this so difficult for mclaren to get this EBD to work?? they are not running it today or tomorow in the race.

Because modelling exhaust gases and working out what to do with them is hideously complex. You can't just throw it in a wind tunnel and test it either. It needs a lot of careful thought and planning. Packaging has a lot do do with as well though because you need unimpeded airflow, as I said months ago on this thread. The McLaren rear just isn't the best to do that with.

I cannot for the life of me understand why some McLaren engineers were getting all excited about what kind of time they were going to gain. Even Renault and Ferrari have hit a bit of a brick wall now because all they're doing is blowing exhaust gases around and over the diffuser. You need a plan as to what you're going to do with it. You also need to rebalance the front end.

[Pierce89]

Why is this so difficult for mclaren to get this EBD to work?? they are not running it today or tomorow in the race.

Renault, Mercedes and Ferrari all were able to use it on their first try. And Mclaren have had even more time to work on it.

those cars arent as tight packaged as te mclaren

The Ferrari and Renault are packaged tighter. Mclaren's car is extremely bulbous and cluttered at the rear, compared to the F10. Seems like Mclarens "ultra fast development rate" got overtaken by the Ferrari boys.

[Pierce89]

Why is this so difficult for mclaren to get this EBD to work?? they are not running it today or tomorow in the race.

Renault, Mercedes and Ferrari all were able to use it on their first try. And Mclaren have had even more time to work on it.

those cars arent as tight packaged as te mclaren

The new rear-end is just so slick .... the best ass in the field

If by slick, you mean: fat and cluttered, then I agree. Worst ass of top teams. Extremely bulky compared to RB6 and F10

Well i dont know if you ever seen it but the mclarens is alot tighter then the ferrari and probabl also then the red bull.

I know it doenst look great, but it is tighter then others

I was in Canada. I saw every car. The Macca rear end is not tighter than the Red
bull, not even close.

[wesley123]

it is what you call tighter, the mclarens is much more downsloaping and nearly hits the floor when it ends, the red bull doesnt do that and seems to combine both, large coke bottle shape and downsloaping with also much longer sidepods extending to the DDD

[timbo]

it is what you call tighter, the mclarens is much more downsloaping and nearly hits the floor when it ends, the red bull doesnt do that and seems to combine both, large coke bottle shape and downsloaping with also much longer sidepods extending to the DDD

Macca has VERY bulbous central section, almost as wide as their rear wing. No other car has that.
Because of it they have smallish sidepods (although not as indercut as Ferrari or Renault)

[segedunum]

Ask yourself how much of the floor you can see and how much free air there is around the floor and suspension. McLaren are miles off Red Bull and Ferrari.