  The Crab pulsar has suffered in 1975 and 1989 two glitches in which the
frequency did not relaxed to the extrapolated pre-glitch value but rather spun
up showing long-term changes in the frequency derivative dot Omega. This
particular behaviour has been interpreted as evidence for an evolution of the
torque acting upon the star. A variable torque may be related to non-canonical
braking indexes, for which some determinations have been possible. We briefly
analyse in this work the consistency of postulating a growth in the angle
between the magnetic moment and the rotation axis as the cause of such events.
We show that this hypothesis leads to the determination of the initial period,
initial and present angles, according to the assumed angle growth, for young
pulsars whose respective braking indices n_{obs} and jerk parameters m_{obs}
are known, and some insights on the equation of state.
