The engine I have rebuilt (Skoda Estelle, '72, RWD, rear mounted engine), came with a starter that has a curious behavior, at least to me: when I apply power to it, correctly engages the flywheel and do its job, however, when I turn it off, I can hear it still free spinning for a few seconds. It is like it keeps spinning by inertia until it stops by itself. It is not an electrical issue. This is specially annoying because I need to wait for it to stop spinning before trying to crank again, or it will not synchronize well and "rasp" the sprocket vs flywheel.
So my question is: wouldn't it be the bendix too "loose"? I mean, the bendix spins together with the shaft which also synchronize it vs the flywheel using the helicoidal grooves...I wonder if the bendix should be "stiff" itself and allow rotation only from the axle. In this starter, the bendix behaves like a cricket wrench: I can rotate it with my fingers towards a direction, it rotates freely, if I do the other direction it would rotate the axle too.