In article .com,
Terry K wrote:

110vac 60Hz outboards? Not really. For electric motors to provide
variable speed and torque, variable frequency and voltage ac drive,
switched dc really, is required.

Yes? Someone should have told the machine tool people, who are fitting
variable freq drives all over the place.

You're right, tho - those are 3 phase motors fed thru a VFD that takes
single phase input & synthesises 3 phase out. But then you can control
speed quite simply.

Building an o/b I leave to someone else. Personally I fail to see the
point except for a very narrow use base. Turning liquid fuel into
mechanical energy directly seems a lot simpler. I'll keep using my
little Honda 4 stroke o/b.

PDW