#18 AMotor Euler Mode Joint axis 1

[Actuated Character]

According to ODE's documentation : http://opende.sourceforge.net/wiki/index.php/Manual_\(All)#Angular_Motor

"There is an important restriction when using euler angles: the theta 1 angle must not be allowed to get outside the range - pi /2 ... pi /2. If this happens then the AMotor joint will become unstable (there is a singularity at +/- pi /2). Thus you must set the appropriate stops on axis number 1."

This limitation is not enforced by EZPhysics Editor or Lib.