catent wrote: ↑24 Mar 2025, 23:40
SB15 wrote: ↑24 Mar 2025, 19:32
I asked this question immediately back in November when there were rumors about the SF-25’s suspension:
Who at Ferrari thought going double pull-rod was good idea especially in an era where the floor produces most of the downforce that sucks the car closer to the ground and where the other top 3 teams went Push-Rod in the rear for great reasons?
I too am curious about this, but what exactly are the reasons for a push-rod rear suspension? That’s a genuine question because I have no idea (other than speculating about suspension geometry in a very elementary manner).
I’d suspect any inherent limitations of a pull-rod rear suspension, or any clear benefits of a push-rod rear, would be well within the scope of awareness of the technical team, especially by year four of a reg set. But perhaps they did make a major conceptual misstep.
Curious to hear the rationale supporting a push-rod rear, or explaining why pull-rod was a bad idea.
You've hit it exactly right there. Pull or push is simply the method (orientation) of taking the wheel movement into the suspension component acting on it, from one to the other.
Figuratively speaking it could literally ..... the activation rod and all spring /damping effect ... be flipped /inverted to make that change. They simply don't do anything different.
Reality is what the design meets in integration within the chassis space around other necessary components etc.
As example you could produce just as much/much more advance or nuance in two systems both of which are of the same orientation.
Folding the leverage ratio provision into more restricted "topography " will ordinarily involve higher component loading, the need for more control/concise component accuracy to generate the same level of chassis to wheel deployment.
The spring, usually torsion type, and most other component in that control system can be sited more or less wherever needed through transition linkage, only limited by designer and concept originating mindset.
The front it seems to be moving toward acceptance of pull type offering quantifiable gain in placement of active rod within aero plan. The rear is far more difficult to assess, not least because we don't usually get such clear view.