How does a single motor, dual prop system, like the Dual prop bravo, on a boat function? I’m not a boater.
Are the props independent, so they can spin at different speeds for docking, etc? and/or do they counter-rotate to eliminate crabbing?
If not, what would be the advantage of connecting (it’s expensive, right?) such a setup?
Peace,
mangeorge
IIRC the whole intent is to reduce the loss of power from correcting for the torque imparted from single props. It’s supposed to be effective enough to outweight the losses in the mechanism. It is also supposed to reduce noise. I don’t know the details for that, but I assume the counter-rotating props cancel each other out noise-wise.
Interesting.
Wouldn’t it be better to use two motors? I mean outboards, or maybe stagger two inboards?
I see they also run two jets on one motor.
I need to get to a lake more often. 
I’m not positive about the two shaft configuration. I think each shaft has counter-rotating props, but I don’t know if the shafts are coupled to one or two motors. I don’t know why you need counter-rotating props on each shaft if you have two seperate shafts that can counter each other. I’ll ask my boating buds what they know about it.