"James Sweet" wrote in message
news:zYcYg.392$AR6.222@trndny02...


Kind of makes me wonder why boats don't have a 2 speed gearbox, wouldn't
even have to be synchronized or capable of shifting under power, but to be
able to select speed or acceleration without swapping the prop could
really come in handy.

This subject comes up from time to time. Automatic adjusting, variable
pitch props were marketed for a while. These guys sell parts for them, but
I haven't seen a complete unit.

http://www.land-and-sea.com/marine/t...rque-shift.htm

Eisboch