McLaren MCL39

A place to discuss the characteristics of the cars in Formula One, both current as well as historical. Laptimes, driver worshipping and team chatter do not belong here.
Fred
Fred
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Joined: 24 Jun 2023, 04:42

Re: McLaren MCL39

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michl420 wrote:
26 Feb 2025, 18:30
There is a stay by the lower front wishbone that goes from behind by the monocoque to the front by the wheel carrier. Is that the rear leg of the lower wishbone or a crazy steering arm?

https://pbs.twimg.com/media/Gkt_S9gWcAA ... name=large
michl420 did a pretty good job spotting this beforehand.

Whoever is responsible for McLaren’s suspension has gone pretty crazy this year though. The front suspension geometry is completely wild which everyone’s picked up on, but the rear suspension seems just as extreme in my opinion. There’s sadly just not that many great photos of it.

FittingMechanics
FittingMechanics
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Joined: 19 Feb 2019, 12:10

Re: McLaren MCL39

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Fred wrote:
28 Feb 2025, 09:29
michl420 wrote:
26 Feb 2025, 18:30
There is a stay by the lower front wishbone that goes from behind by the monocoque to the front by the wheel carrier. Is that the rear leg of the lower wishbone or a crazy steering arm?

https://pbs.twimg.com/media/Gkt_S9gWcAA ... name=large
michl420 did a pretty good job spotting this beforehand.

Whoever is responsible for McLaren’s suspension has gone pretty crazy this year though. The front suspension geometry is completely wild which everyone’s picked up on, but the rear suspension seems just as extreme in my opinion. There’s sadly just not that many great photos of it.
That is probably Rob Marshall.

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De Wet
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Joined: 03 Jan 2024, 13:32

Re: McLaren MCL39

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matt_s
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Re: McLaren MCL39

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FittingMechanics wrote:
28 Feb 2025, 00:07

He commented later on that it's not double diffusor (I guess someone asked) and then said he won't post about it now and be will let paid experts point it out.

LOL. This sounds like the F1 tech watch equivalent of "I do have a girlfriend. You don't know her. She goes to another school." :D

f1rules
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Re: McLaren MCL39

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Brahmal
Brahmal
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Re: McLaren MCL39

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ringo
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Joined: 29 Mar 2009, 10:57

Re: McLaren MCL39

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Steering arm still seems to be downstresm of the control arm, not in the middle. Not sure how that would work if it were in the middle.

Looking on this car, it is heavily developed on the outside. Very extreme bodywork solutions.

Sidepod openings and the undercut are most intriguing to me. The control ams being so long and connecting almost at the entry to the floor is interesting. Makes you wonder if it's purely for aero reasonse.
For Sure!!

michl420
michl420
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Re: McLaren MCL39

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ringo wrote:
01 Mar 2025, 08:04
Steering arm still seems to be downstresm of the control arm, not in the middle. Not sure how that would work if it were in the middle.

Looking on this car, it is heavily developed on the outside. Very extreme bodywork solutions.

Sidepod openings and the undercut are most intriguing to me. The control ams being so long and connecting almost at the entry to the floor is interesting. Makes you wonder if it's purely for aero reasonse.
The seering arm is between the lower wishbone. You can see the cut for the sliding aero-cover. And it is mounted outboard in front of the axis of rotation.
And I think the low mounting of the upper wishbone is only for aero reasons as the weird steering arm is.
Maybe the red bull introducing 3 years ago was not for aero but here it looks like so.
Last edited by michl420 on 01 Mar 2025, 14:39, edited 1 time in total.

frosty125
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Joined: 20 Feb 2014, 19:34

Re: McLaren MCL39

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Looking at how much higher the front lower wishbone is to the rear lower wishbone raises the question of how much anti-dive this car actually has.

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De Wet
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Joined: 03 Jan 2024, 13:32

Re: McLaren MCL39

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McLaren’s gold heat shield:
Kravitz disclosed the team have focused on improving the car in both slow and high speed corners together with improving the efficiency of the DRS which was controversial at times last year.

“As far as the front of the car, it doesn’t actually look dramatically different, but the rear is nicely packaged. So, from the front of it, while other teams are doing different things on their design, I think McLaren are looking…oh that’s an interesting heat shield! A gold heat shield on the front bulkhead, I’ve never seen that before! “Wow, you’ve got to keep something cool in there."

Interesting...
Last edited by De Wet on 02 Mar 2025, 11:53, edited 2 times in total.

michl420
michl420
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Re: McLaren MCL39

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frosty125 wrote:
01 Mar 2025, 11:40
Looking at how much higher the front lower wishbone is to the rear lower wishbone raises the question of how much anti-dive this car actually has.
In my opion it is pro-dive. Think of it. Under braking, he car fall (dive) into the front suspension . I don`t know why they do that. Or I have a mistake in thinking here.

Brahmal
Brahmal
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Re: McLaren MCL39

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Brightened. Lower components from left to right: wishbone, track rod, pullrod, correct?

michl420
michl420
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Re: McLaren MCL39

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Brahmal wrote:
01 Mar 2025, 19:14
https://imageshack.com/i/poKtuW6Tj

Brightened. Lower components from left to right: wishbone, track rod, pullrod, correct?
Correct!

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ringo
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Joined: 29 Mar 2009, 10:57

Re: McLaren MCL39

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I am now seeing things clearer. My mistake on saying the track was the one downstream.

It seems that the vertical motion of the wheel is so limited that the control arm geometry on these cars doesn't really change the camber much with compression or extension.

The control arms seem just there to take the loads and provide aero benefit. The tyre pressures, springs,dampers, and springyness of the arms seem to be where the suspension tuning is at moreso than geometry.

Mercedes W16 did copy Mclaren's idea from last year also. Is their track arm at the rear or middle?
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the EDGE
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Re: McLaren MCL39

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Scarbs talking about McLaren’s track rods