Torque = 0 for RPM.

Hi! Sorry for ignorance of the language, I will try to learn;) Torque = 0 for RPM. At the torque = 0 it is necessary to find the hydro turbines RPM. What option to install?

1.TorqueZ = 0?

2.Friction ForceZ = 0?

3.ForceZ = 0?

4.Normal ForceZ = 0?

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