adesign architecture:
    mg change attributes:
        why are there four variables for each port:
adesign library components:
- bearing rotational:
    inner diameter: mm
    outer diameter: mm
    inner shaft torque: Nm
    outer shaft torque: Nm
    inner shaft speed: m/radians
    outer shaft speed: m/radians
- bearing translational:
    inner diameter: m
    outer diameter: m
    b: #not sure what variable this is
    interfaces:
        - !interface
            name: shaft hole
            domain: translation
        - !interface
            name: bolt
            domain: translation
    inner shaft force:
        units: N
        equation: !template "$b * ($inner_shaft_speed - $outer_shaft_speed)"
    outer shaft force:
        units: N
        equation: !template "$b * ($outer_shaft_speed - $inner_shaft_speed)"
    inner shaft speed:
        units: m/radians
        equation: !template "$outer_shaft_speed + ($inner_shaft_force / $b)"
    outer shaft speed:
        units: m/radians
        equation: !template "$inner_shaft_speed + ($outer_shaft_force / $b)"
- belt:
    length: m
    diameter: m
    interfaces:
        - !interface
            name: belt start
            domain: translation
            equations:
                - equation: !template "$force "
        - !interface
            name: belt end
            domain: translation

- cable:
- capacitor:
- chain:
- coupler:
- cylinder:
- damper rotational:
- damper translational:
- dial:
- footpad:
- gear:
    diameter: 
    shaft diameter:
    teeth:
    pitch:
- generator:
- inductor:
- lever 1st class:
- lever 2nd class:
- lever 3rd class:
- motor:
- pipe:
- piston:
- potentiometer:
- pulley:
- rack:
- relay:
- resistor:
- shaft:
- solenoid:
- spring:
- sprocket:
- stop:
- switch:
- tank:
- torsion spring:
- transistor:
- valve elect control:
- valve rotat control:
- worm gear:

nordex: !catalog
    name: Nordex
    year: 1983
    page: 247
allied electronics: !catalog
    name: Allied Electronics Online
    page: 445