McLaren MCL36 Speculation Thread

[PhillipM]

Not so. If you can't understand this via human imagination, then run a simulation via Solid Works or CATIA. I learned this stuff back in the old days when students had to make load bearing towers using thin wooden dowel sections.

Of course you can, the damper works against the spring. The spring is before the pullrod from the dampers perspective, so the force is reacted before it and the load on the pullrod is the tension of the spring supporting the car.
Ergo a pullrod remains a pullrod in both compression and rebound.
I would love for you to show your simulation in Solid Works because I think you're making absolutely basic mistakes here.

[Tim.Wright]

Push/pull-rod loads generally never change sign. They do however oscillate about their static load. So in your example of a bump, in the compression cycle the pullroad load increases in tension above it's static weight (+ downforce) load. In the rebound cycle the load reduces to a value less than the staic load but remains in tension.

Not so. If you can't understand this via human imagination, then run a simulation via Solid Works or CATIA. I learned this stuff back in the old days when students had to make load bearing towers using thin wooden dowel sections.

Solidworks and Catia aren't going to help here. This is a force problem not a kinematic one.

Pullrod load is equal to your wheel load divided by motion ratio. Wheel load can never be negative (limit case is zero when the wheel is physically off the ground).

So, unless your wheels leave the ground and your dampers are hydraulically locked in rebound, your pull rod is always going to be in tension.

An FBD of the upright will illustrate all of this very clearly.

[gcdugas]

Of course you can, the damper works against the spring. The spring is before the pullrod from the dampers perspective, so the force is reacted before it and the load on the pullrod is the tension of the spring supporting the car.
Ergo a pullrod remains a pullrod in both compression and rebound.
I would love for you to show your simulation in Solid Works because I think you're making absolutely basic mistakes here.

OK, when the length of damper expands during the rebound cycle, what kind of load does that place on the pullrod? Compression or tension? This should be easy....

[adrianjordan]

I really wouldn't read much into the Lego model.

I'm a massive lego fan and the curved shapes of an F1 car are ridiculously hard to replicate using lego!!

[Tim.Wright]

OK, when the length of damper expands during the rebound cycle, what kind of load does that place on the pullrod? Compression or tension? This should be easy....

It reduces the tension force, but remains in tension.

[Stu]

Of course you can, the damper works against the spring. The spring is before the pullrod from the dampers perspective, so the force is reacted before it and the load on the pullrod is the tension of the spring supporting the car.
Ergo a pullrod remains a pullrod in both compression and rebound.
I would love for you to show your simulation in Solid Works because I think you're making absolutely basic mistakes here.

OK, when the length of damper expands during the rebound cycle, what kind of load does that place on the pullrod? Compression or tension? This should be easy....

The damper/spring do not place a load on the pull-rod that is greater than that placed by the unsprung mass during rebound.

Compare the sizes of the pull-rods (front) and push-rods (rear) of most competitors over the last few years. A pull-rod operates solely in tension (unless the wheel that it is attached to is not in contact with the race-track).

[PhillipM]

OK, when the length of damper expands during the rebound cycle, what kind of load does that place on the pullrod? Compression or tension? This should be easy....

Very easy, the rebound force exterted by the damper against the spring force from the torsion bar reduces the spring force exerted.
Hence the pullrod sees less force from the spring supporting the vehicle. Less. It does not reverse it.

[gcdugas]

OK, when the length of damper expands during the rebound cycle, what kind of load does that place on the pullrod? Compression or tension? This should be easy....

Very easy, the rebound force exterted by the damper against the spring force from the torsion bar reduces the spring force exerted.
Hence the pullrod sees less force from the spring supporting the vehicle. Less. It does not reverse it.

Forget the magnitude of the force for a moment. Answer the question... Is compression or tension exerted upon the pullrod during rebound?

[PhillipM]

Tension. As I already said.

[Tim.Wright]

Tension...

Same direction as the static load.

[NiyolHuayra]

I have just seen the Lego leak, my thoughts: I think this only confirms the color scheme nothing more (flies away)

[bauc]

I have just seen the Lego leak, my thoughts: I think this only confirms the color scheme nothing more (flies away)

Yeah, there are a ton of people working at Lego who had the design of the Lego model long ago for this, so its just a generic F1 model with the color scheme of Mclaren

[BOEING>AIRBUS]

Hoping that to be the case

[NiyolHuayra]

From 2022 - McLaren Formula 1 Team thread by User: wogx (memberlist.php?mode=viewprofile&u=36832)

[Emag]

https://www.wykop.pl/cdn/c3201142/comme ... fnjB41.jpg

From 2022 - McLaren Formula 1 Team thread by User: wogx (memberlist.php?mode=viewprofile&u=36832)

Sidepods look like Haas' but I am not sure if they look that way because they are made out of lego pieces, or because the model that McLaren gave them was like that