Raptor22 wrote:
In free fall you do not have weight, but do still have mass. You only have weight when you have the potential to be accelerated at 1G. To test this jump out of a plane ( I would advise the use of a parachute ) with a scale in hand. On the way down stand on the scale and see if it reads anything.
No only have weight when there is a reaction. Your mass however remains where you left it.
The scale is moving. so you won't be able to press down the springs.
Your weight does not disappear.
because weight is
acceleration due to gravity x mass. FACT
When you hit the ground you will see that the weight is there.lol..
Smikle, when you park you vehicle on a steep slope does it squat at the rear?
No. My car squats at the front. Because the weight shifts more over the front axle the more tilted forward it is.
Mine does not.
The reason is that since the fluid is contained within a vessel under pressure, there is now fluid flow to allow the damper piston to move.
Until the car is placed in an orientation whereby the line of action of the weight acting through the tyres contact patch induces a torque sufficient to overcome the friction in the damper the piston remains at its rest position.
Static friction? All the calculations I did were
external and net Forces.. so it had accounted for any
internal friction.
Now if a hooligan comes past and pushes down on the suspension, yes it will squat.
In your example you continuously assume a frcitionless piston under no pressure.
Nope..the calculations I did were all net forces out of the system. I could say, like if you were measuring horsepower at the wheels kind of thing. All external to the system.
Something like my chums Citroen will squat at the rear because its suspension is pressurised externally by a pump. The SACHS dampers in my Golf are pressurised internally and have a platformed shim stack that is piston velocity sensitive. The Citroens is a simple fluid damper arrangement driven by fluid pressure.
You merely cite an example that suits your POV, and not a realistic example.
But it didn't suit my point of view. I just did a calcuation and I gave you the scenario to proove that the system will respond to orientation - even so as much to influence wheel load. It was not an opinion.
Why is this system not in violation of 10.1.2? Because it is designed to not violate the rule.
Tell Ross Brawn Hello. The real system might not even look like this specific one.
The system responds to wheel loads and has sufficient platform to prevent fluid flow at inclinations that could reasonably be expected in a homologation test. Whether or not movement can be induced by a fancy combobulatron is irrelevant because ANY suspension will see movement at a present level of orientation induced load.
The policing of rules involves wording but there is also the "reasonable" aspect that is taken into account.
Reasonable means that the scrutineers accept that pistons and hydraulics involved in the suspension working are part of the system. They consider an outside, engine or electrically driven pump to be an external force and "Powered". Ask Charlie to explain this to you. He will sit you down somewhere quiet and go over the rules that relates to your question and provide his interpretation.
I have been saying from day one. That it is whether Charlie whiting considers the inertial effects that are due not from the wheel load to be significant.
I and other have covered that over and over. If you and others chose not to see it then I see no point in further participation in this discussion. Its not a discussion any longer but a deliberate attempt to incite and maintain an arguement.
I am two steps ahead of you... I was on your side of the fence before I realised that the system responds to orientation change. So do wheel loads, but the response system can be isolated quite easily.
Example:
ForMuLaOne wrote: "You want to fix it by braking, then you have to live with the response of the suspension caused by the changing forces you have when the car is braked and the surface angle is changed. And to point it out ONCE again: Whenever you brake a car, the first thing that changes the whole system is the change of load applied to the wheel. There will never be a reaction of a mass inside the car BEFORE the load applied to the wheel has changed.
YOu Respond: "This doesn't change anything I said. Time doesn't matter. I gave an Isolated case to show that the system is sensitive to gravitational potential difference. You have to prove to me that it is not. If you place the car on a slope suspension in rest position then release it the suspension front suspension will continue to rise until it reaches an equilibrium.
So you load the dice in a direction that suits having an argument and not reading what he said.
Any suspension is potentially susceptible to gravitational potential. But the sensitivity is DESIGNED OUT. In this design, load threshold and Time are factors but you choose to ignore that because it suits having a revolving argument.
That's called trolling. Its a real shame that this forum has been allowed to be degraded to this level
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He gave a single scenario. I stated no agreement or disagreement..He was loading the dice to say that because the event happen after braking.. somehow that makes it that all the response comes from the wheels.. that is just one case.
because I have considered that scenario long ago. So what he said is like dust on the scales.. see some pages back.
What I have done for you both is ISOLATE a scenario where the system can work without any
changing input from the wheel loading. This is important if you analyse a vibrating system..with trnasfer function and all that stuff that I don't remember now.