The article examines the dynamics of a free-wheeling mechanism (FWM) of an axial type with additional flat friction surfaces and intermediate rolling elements, used as an oscillation rectifier in Blagonravov’s mechanical continuously variable transmission. The design features associated with the presence of a springy torsion shaft sequentially located behind the driven shaft of the FWM are considered. The FWM design scheme and the system of differential equations describing the motion of the FWM’s elements taking into account the gaps in the mating parts are presented. The working and idle running is simulated in the Simulink programming environment. The results of modeling the dynamics of switching on/off one FWM taking into account the springy and inertial characteristics of the complex elements (FWM—springy torsion shaft—stop mode) at a rotation frequency of the driving shaft of 42.41 rad/s are presented. The article presents the methodology and results of experimental determination of angular displacements, speeds and accelerations of driving and driven parts of FWM. Comparison of calculated and experimental kinematic and force parameters shows good convergence of results, which indicates the adequacy of the developed model in the Simulink environment. This allows a more correct approach to the analysis of operation of any mechanical pulse transmissions, which can be considered as the systems with a constant structure.