The orbital period as a function of the donor mass for a suite of systems formed by a donor star of 1.25 M_⊙, a NS of 1.3 M_⊙ with P_orb, i logarithmically evenly spaced with steps of 20%. The orbital evolution was computed from the ZAMS. Black (magenta) lines denote results corresponding to solar metallicity (Z = 10⁻³). The detached stages, in which Huntsman pulsars are expected, are denoted in blue for solar metallicity and in pink for Z = 10⁻³. Horizontal bars correspond to the measurements of the system PSR J1947-1120 (green) and PSR J1417-4402 (black). MB0 denotes the standard magnetic braking prescription.