Bifurcation diagrams for the four selected parameter sets, as listed in Table 1, constructed from a series of dynamo solutions with increasing dynamo number N. The insets shown in (B) and (C) are closeups of the multiperiodic/chaotic window shown in the same panel. In this model, without a lower cutoff on the nonlinearity, the limit cycle emerging from the first bifurcation (N/N_crit = 1) never undergoes further bifurcation or transition to chaos.