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[QUOTE="drehwurm, post: 690009, member: 20888"] Servus Terry, I do understand your examples, but I think they are only valid for a certain, minor aspect in the "high flow" vs "low flow" piston matter. IMHO as soon as the smaller orifices in the "low flow" piston become an obstruction to the fluid flow, additional resistance aka damping force is created thus reducing the force on the shim stack. In your example this would mean to put an orifice between the small and large piston in the hydraulic jack. As long as the area of the orifice would be larger or the same as the area of the small piston, nothing would change. But as soon as the orifice became smaller in area, you would have work harder to lift the same weight with the same speed. Or the other way round, with the same force you could do less work. So, IMO this is exactely what is happening with the shims. In a "low flow" piston enviroment initial load/deflection on the shims would be greater/larger than with a "high flow" piston, but depending on the setup (port size, ...) this would change with higher loads on the suspension. Do you agree? I'm still not sure about my other question though. Does only the smallest diameter in the port affect shim deflection, or is the diameter/area at the contact point piston/shim relevant. In the above example this would mean, is there a difference if you pinch the hose at the top or a few inches below? Michael (using bathroom fluid-dynamics) [/QUOTE]
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