McLaren MP4-29 Mercedes

[Per]

The force in the pullrod is dominated by the normal load on the wheel so I can't imagine that the butterfly suspension will have much influence on that. And with rear downforce reduced w.r.t. 2013 the normal load should be lower.

Perhaps they are using some temporary pullrods allowing for greater ride height adjustments? They look like metal and I can't imagine McLaren not using CFRP pullrods in Melbourne.

[stefan_]

http://i.imgur.com/LDqNhDL.jpg
Can anyone tell me what the inlet in the red circle is and the bulge in the green circle?

Red - tyre wake slot
Green - that is to help with the upwash

[i70q7m7ghw]

Just helps with cooling, they ran it in 2010 too. Here's an image showing the gurney tab and a decent view of the rear wishbones. They are pretty thick.

http://www.formule1.nl/media/uploads/me ... 593.49.jpg

I think that is a pretty clear image showing the shape of the wishbones is more of a "bell" than a "mushroom".

[Bart111]

@Coefficient

Can you provide a source for Mclaren's fuel worries please?

Well, it's a rumour I read somewhere on an Italian website and I would have ignored it had Paddy Lowe not called the 100kg fuel limit "sometimes very frustrating". I was actually hoping to find here someone who has heard it too and knows the source.

[megasyxx]

http://i.imgur.com/LDqNhDL.jpg

Can anyone tell me what the inlet in the red circle is and the bulge in the green circle?

RW81 aka modified f-duct?

[miguelalvesreis]

How many upper wishbones are allowed?
Is this a 3rd link member?


https://drive.google.com/file/d/0B6Ffkm ... sp=sharing

[i70q7m7ghw]

http://i.imgur.com/LDqNhDL.jpg

Can anyone tell me what the inlet in the red circle is and the bulge in the green circle?

RW81 aka modified f-duct?

NO.

[i70q7m7ghw]

How many upper wishbones are allowed?
Is this a 3rd link member?

https://drive.google.com/file/d/0B6Ffkm ... sp=sharing
https://drive.google.com/file/d/0B6Ffkm ... sp=sharing

Nope, it's 1 wishbone with 3 "arms".

[Lycoming]

The force in the pullrod is dominated by the normal load on the wheel so I can't imagine that the butterfly suspension will have much influence on that.

It's also determined by suspension geometry, particularly pullrod angle.

And with rear downforce reduced w.r.t. 2013 the normal load should be lower.

but weight is increased. Plus, your largest load is going to be in bump anyways, and the bump load is large relative to the downforce load, so it dominates.

Perhaps they are using some temporary pullrods allowing for greater ride height adjustments? They look like metal and I can't imagine McLaren not using CFRP pullrods in Melbourne.

I don't understand how metal pullrods would give you more ride height adjustment options.

[Coefficient]

Winter Testing 2014 - Session 2, Day 2 - Bahrain (20.02.2014)


http://i.imgur.com/0tPiTAu.jpg

Gurney on hot air exit.

http://www.zaslike.com/files/waxgb1fmzykg9t7we5wx.jpg

http://www.zaslike.com/files/qwbnsl1twz4m07x3ppmu.jpg

Probably for helping to extract hot air, or even to direct it upward.

They also have a robot with one infra red eye on the front jack too. Must be Honda having an influence already.

[Pup]

How many upper wishbones are allowed?
Is this a 3rd link member?

Is what a 3rd member? You outlined the only 2 in the photo.

Nope, it's 1 wishbone with 3 "arms".

There's no such thing.

[i70q7m7ghw]

Nope, it's 1 wishbone with 3 "arms".

There's no such thing.

There is, and they have one. The two arms highlighted in that picture, the third is the oversized aero arm at the back.

[Pup]

That's the track rod. We've been through this.

[i70q7m7ghw]

That's the track rod. We've been through this.

Uh, we are talking about the rear suspension? if you mean the toe link, that's the lower "mushroom".

[Pup]

You mean the lower "rounded rectangle", don't you?

The track rod is the upper one. The lower one is the rear arm of the bottom wishbone. The highlighted piece in the photo is the entirety of the upper wishbone.

Rules do not allow 3-member wishbones.