Counter Rotating Props

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   Not sure if we talked about this, but I think the single most innovative break through for huge underpowered gas guzzling I/O boats is the Bravo-3 counter rotating propellers out-drive.

Have we talked about why this is apparently difficult in an inboard? I really think this would revolutionize how the inboards pull stuff. I think about this mainly because I pull my show teams around a lot and need the traction so we go to multiple outboards on one boat.

I realize transmission and drive shaft would have to be quite the site so wanted to see what the hold up was from the "boat smart" people :)

Thoughts?  

Yea yea I know all about the 2 or so inboards with twin screws but I'm not talking about that route. Talking about something for the normal consumer...would think if this was done it'd be a nice option on the G23 and 25...

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mdvalant Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: May-06-2009 Location: Bellevue, IA Status: Offline Points: 2059	Post Options Post Reply Quote mdvalant Report Post Thanks(0) Quote Reply Topic: Counter Rotating Props Posted: July-13-2012 at 7:41pm
	Not sure if we talked about this, but I think the single most innovative break through for huge underpowered gas guzzling I/O boats is the Bravo-3 counter rotating propellers out-drive. Have we talked about why this is apparently difficult in an inboard? I really think this would revolutionize how the inboards pull stuff. I think about this mainly because I pull my show teams around a lot and need the traction so we go to multiple outboards on one boat. I realize transmission and drive shaft would have to be quite the site so wanted to see what the hold up was from the "boat smart" people :) Thoughts? Yea yea I know all about the 2 or so inboards with twin screws but I'm not talking about that route. Talking about something for the normal consumer...would think if this was done it'd be a nice option on the G23 and 25...
	'90 Ski (sold) '00 Sport Mississippi River - Bellevue, IA

Jllogan Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: May-18-2011 Location: canton, OH Status: Offline Points: 1728	Post Options Post Reply Quote Jllogan Report Post Thanks(0) Quote Reply Posted: July-13-2012 at 7:47pm
	I saw a guy that did some backyard engineering and had 2 screws coming out of his correct craft. I dont know how advantageous it was. Sounds expensive and problematic. Doubt it would be a big seller. I think the weekend warrior would have a hard time seeing the justification.
	1986 Ski Nautique 2001

mdvalant Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: May-06-2009 Location: Bellevue, IA Status: Offline Points: 2059	Post Options Post Reply Quote mdvalant Report Post Thanks(0) Quote Reply Posted: July-13-2012 at 7:48pm
	how come the weekend warrior buys bravo 3's on their I/O? I would think it would actually improve fuel consumption...motor wouldn't have to work as hard no?
	'90 Ski (sold) '00 Sport Mississippi River - Bellevue, IA

peter1234 Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: February-03-2008 Location: United States Status: Offline Points: 2756	Post Options Post Reply Quote peter1234 Report Post Thanks(0) Quote Reply Posted: July-13-2012 at 9:22pm
	i would think it would be a good idea or even a variable pitch prop .. not to thread jack here but i have been looking for a cookie cutter 24 to 26 foot family cruiser and am amazed at how many in the late 90s to 2002 boats used 5.0 motors . those are big heavy boats
	former skylark owner now a formula but I cant let this place go

DieselCash Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: October-30-2011 Location: Killeen, TX Status: Offline Points: 53	Post Options Post Reply Quote DieselCash Report Post Thanks(0) Quote Reply Posted: July-13-2012 at 11:19pm
	I think mastercraft made a boat a few years back that had twin V-drive. Anything can be done, it just depends how much money you have.
	1992 Sport Nautique

Infinite5ths Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: August-12-2011 Location: Cary, NC Status: Offline Points: 74	Post Options Post Reply Quote Infinite5ths Report Post Thanks(0) Quote Reply Posted: July-13-2012 at 11:22pm
	Didn't Volvo do the double-prop on an out-drive thing (Volvo DuoProp) YEARS ago?? What makes the Bravo III a big deal?
	-- Mike 1996 Ski Nautique 176

Counter Rotating Props

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