hardingfv32 wrote:ForMuLaOne wrote:One last sentence: On a formula one car, every force, every acceleration and the following consequences are a result of a force or load that has been applied to the tyres, as they are the only contact to the ground. This should be enough to understand the rules and the system.
This is a fair statement. So let us break down 10.1.2: The suspension system must be so arranged that its response results only from changes in load applied to the wheels.
A load is being created by the mercury column, correct? That load is applied to the suspension system not the wheels. The application of this load changes the ride height. This change in ride height does not change any of the loads on the wheels. If the system is blocked off so the mercury can not move, the loads on the wheels stay the same during braking. Clearly the suspension is not responding to changes in wheel loads using this system, because there no deference in loads between an active or in-active mercury system.
Good challenge , but i think I have posted a valid defense.
Brian
As i suspected, dodgy science.
The pressure is created by the LOAD.
Correct that the "mercury column" is a sort of pump. Pumps create flow but need t be able to create flow against a load.
Think front end loader. The hydraulics has to lift the big basket in front. Remove the hydraulic line connection to the basket there will be no load. The pressure gauge will show 0kpaGauge. (well in reality it will show a small pressure due to frcition losses in the lines creating a small pressure) Reattach the line and the pressure will jump to the operating system pressure.
Hence pressure is created by the load.
This load at the wheels (back to our car) is transferred to the springs via the control arms (creating leverage at the mounting points (hence a 50mm diameter piston can suspend 150Kg)
nsmikle,
lifting the wheels off the ground will draw the dampers to their bump stops correct since there is no load on the suspension. So the inertia valve cannot.
Right so you contend that it will move due to the cars inclination.
Lets assume that the mercury is entrained on either end of the containing vessel by a piston.
Remember that this is a closed system transfering applied forces at the wheels to the mercury column to create a flow to move fluid to resist suspension travel at a present load.
With no load at an angle of say 45 degrees you contend the mercury column will move due to its own weight and pump the suspension fluid to lower the front wishbones.
How can it do this if the front suspension is already at its bump stops and has no where to go.....?
Mount the car on a 7 axis rig and tilt it away like crazy. The suspension still will not move until it sees a load large enough to overcome friction to get the system moving.
Another principal of hydraulics I should share.
I have two cyclinders with heavy pistons in them.
Both are standing vertically on their ends, both are connected to a hydraulic circuit.
One piston has blown seal and the others is fully functioning.
What will happen to each piston If I leave them be for a few hours??
humour me please because the principals apply to the discussion.
BTW we have already agreed that the mercury column creates flow.