Re: Has anyone tried one of these regulators?

[amuller]

I have not had much trouble with the traditional 3 unit relay type electromechanical regulators for generators. If they are not smashed or badly corroded they can generally be made to work.

As far as I know all the OMC DC generators are properly regulated. On the other hand, many of the flywheel alternators are not, and essentially count on the battery to absorb excess charging power.

It does seem that modern sealed or semi-sealed batteries are more sensitive to charging voltage, and perhaps are less effective at absorbing overvoltages. Plus, of course, modern marine electronics often seem to work only within a rather narrow voltage input range. FET type (series) regulators made for bikes and scooters may be a good bet for these alternators, compared to no regulation or the original shunt-type regulators.