Rotational velocities, according to the integrations of Eqs. (1)–(4), as a function of time for the rotating models shown in Fig. 12. Continuous red line represents the primary and the green one denotes the secondary. The two blue lines indicate the error bars for the mean age of the system. Lower-left corner illustrates the variations in the relative radii of the primary and secondary. Same initial conditions as in Fig. 13.