Key:mechanical_coupling

Motion provided by mechanical_driver=*s often needs to be adapted, mechanical systems can be more complex than a simple motion source and could include a mechanical adapter (gear reducer, nodding donkey...). Torque can be adapted in different ways from a single given electric motor for instance.

mechanical_coupling=* was primarily intended for man_made=pump and couplings are passive equipment, not a motion source.

Tagging

Use mechanical_coupling=* with following values on man_made=pump or any suitable device that needs adapted mechanical power to be operated.
List of values is open for extension. New values should be discussed on Talk page prior to be added here or may be proposed in a formal proposal.

Possible mechanical_coupling=* values

Key	Value	Comment
mechanical_coupling	direct	The power out of driver is directly transmitted to driven device without any adaptation nor transformation
	reducer	A reducer adapts rotating motion to an appropriate rotating torque for the driven device with help of gears to provide a static ratio
	gearbox	A gearbox adapts a rotating motion to an appropriate torque force with the ability to change ratio according to mechanical needs at a given time
	nodding_donkey	A nodding donkey converts the rotary movement of a motor/engine to a reciprocating motion used to drive some kind of devices.
	belt	A belt allows to transmit motion between two parallel axes with possibly different diameters to adapt torque.

This table is took from the approval proposal and waits to be replaced with Taglists once all values will be on this wiki.

See also

Photo	Location	Tagging	Comments
	France	man_made=pump pump_mechanism=centrifugal mechanical_driver=electric_motor (optional mechanical_coupling=direct)	A pump which runs with an electric motor help. Rotation from the motor is directly transmitted to pump mechanism without any adaptation
	France	man_made=pump pump_mechanism=centrifugal mechanical_driver=electric_motor mechanical_coupling=belt	A pump that runs with an electric motor on parallel axes. Both pump and motor are behind the blue casing and the belt transmit the rotation