5 From the menu, choose Transform > Rotation > (2nd) Euler XYZ > Z
Rotation.
6 Select the Dummy-FL object, which is the front left wheel helper, and
choose Transform > Rotation > (2nd) Euler XYZ > Z Rotation.
7 On the Parameter Wiring dialog, set the control direction to both ways,
since the manual turning of either object affects the other.
8 Click Connect and leave the Parameter Wiring dialog open.
9 On the main toolbar, click Select And Rotate and set the coordinate system
to local.
10 Rotate the steering wheel on its local Z axis.
Note how the steering wheel and the front wheel turn in the opposite
direction. You will correct this by modifying the controller expression.
A second adjustment is also required. The front wheel needs to turn far
less than the steering wheel. This is because the pivot range of a front
wheel is about 90 degrees, whereas a steering wheel range of movement
is two to three complete revolutions.
640 | Chapter 4 Animation Tutorials