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I hope this makes sense

Correct me if I'm wrong but the rod on a shock absorber should push out when it has no pressure on it ?

True

Depends on what type of shock.

The shock in the diagram is a monotube gas design. If you push down on the piston rod, it will come back up by itself due to the gas pressure. This is also true for the twin tube gas design.

If this was a foam cell shock, the piston rod will not come back up by itself as the shock absorber is not pressurised.

ultimate wrote:The shock in the diagram is a monotube gas design. If you push down on the piston rod, it will come back up by itself due to the gas pressure. This is also true for the twin tube gas design.

If this was a foam cell shock, the piston rod will not come back up by itself as the shock absorber is not pressurised.

Ok Thanks