Idea about a different approach to steering F1 car

[marcush.]

i see your point but would´t the whole system be VERY sensitive to sideloads? the smallest of sideload will have steering effect so you get a lot of instant response from the system in my view.
Of course you need very very strong actuation to counter the high forces you are transmitting into the steering ,no question about this .
The stiffness is an issue as well as you create a subchassis carrying all loads from of the front suspension but thats not really explaining why it could not be stiff ?

[The_Man]

The stiffness is an issue as well as you create a subchassis carrying all loads from of the front suspension but thats not really explaining why it could not be stiff ?

I did not quite get the question. The individual subsystems of the chassis can be as stiff as you would want but the overall stiffness will be compromised because you have a actuator in between which will majority determine the stiffness along the wheelbase. The actuator forces will have to be comparable to the forces produced when you bend a normal chassis. As you could imagine they are very large.

Also is sensitivity to side load a good thing? Can you describe what exactly you mean by side loads? Sideway forces cause by tyre slip angles of these are external disturbances or aero?

[riff_raff]

The linkage connection between the front "sub-chassis" and main chassis would need to transmit large torsional and bending loads without excessive friction. It would also need to function without inducing bump steer.

Also, could you get enough lateral movement to produce a useful change in roll response without creating an excessively wide outer chassis mold line?

Interesting though.

riff_raff

[marcush.]

The linkage connection between the front "sub-chassis" and main chassis would need to transmit large torsional and bending loads without excessive friction. It would also need to function without inducing bump steer.

Also, could you get enough lateral movement to produce a useful change in roll response without creating an excessively wide outer chassis mold line?

Interesting though.

riff_raff

My idea was to hang up the subsystem as a flexure very stiff in z and x direction but leaving the desirered degree in freedom in y.That ways friction would not be an issue.

[FW17]

How is 4 wheel steering work, what is the advantage of this?