681787.fig.0011a
(a)
681787.fig.0011b
(b)
Figure 11: Regions in the “clappering plane” for which a bell can ring (a)right and (b)wrong. Colour shading indicates the clapper relative angular velocity at the moment of first contact between clapper and bell. The bell motion was initialised at angle . White symbols indicate the positions of the bells from Figure 9.