  An example of strange nonchaotic attractor (SNA) is discussed in a
dissipative system of mechanical nature driven by constant torque applied to
one of the elements of the construction. So the external force is not
oscillatory, and the system is autonomous. Components of the motion with
incommensurable frequencies emerge due to the irrational ratio of sizes of the
involved rotating elements. We regard the phenomenon as strange nonchaotic
self-oscillations, and its existence sheds new light on the question of
feasibility of SNA in autonomous systems.
