“…In nonholonomic mechanics a special attention is given to the systems whose equations of motion after suitable reduction yield conformally Hamiltonian vector field, which can be studied by the standard methods of Hamiltonian mechanics after an appropriate time reparameterization, see reviews [2,6,5,9,15] and the references therein. For instance, because the generic level set of the integrals of motion is independent of time, we can study symmetries of this manifold simultaneously for Hamiltonian and non-Hamiltonian vector fields associated with this level set.…”