Cool new outboard

LIforrelaxin · 03-02-2011, 10:32 AM

At 1000lbs that is one heavy motor. Could a toon handle the weight, sure as long as it is designed for it. That is the piece that has to be understood. if the mounting platform can handle the weight and the torque of the engine then everything is fine. Oh yes one other piece the boat has to be able to counter the wieght. On the other side of the equation does a toon really need 557 h.p. engine with 550 lbft of torque? My guess is probably not.

Yamaha, V8 beast on produces 350 hp... I didn't see a torque spec but I am sure it is considerably less as well. Its like comparing apples to oranges. While the Yamaha engine may be a nice fit for some pontoons, this beast, well may just be over kill... On the other hand it would sure be cool to sea and watch.....

Dave R · 03-02-2011, 12:02 PM

Quote:

Originally Posted by LIforrelaxin

Yamaha, V8 beast on produces 350 hp... I didn't see a torque spec but I am sure it is considerably less as well. Its like comparing apples to oranges. While the Yamaha engine may be a nice fit for some pontoons, this beast, well may just be over kill... On the other hand it would sure be cool to sea and watch.....

Torque is pretty meaningless on a boat engine since the prop and final drive ratio are choosen to let the engine get to its WOT RPM, not its torque peak. That's why you don't typically see it advertised. Torque specs are usefull on a car/truck engine because you can see if the motor will need to be spun to a high RPM to provide real thrust or not.

Wolfeboro_Baja · 03-02-2011, 12:30 PM

Nice video on YouTube of the new Seven Marine 557 outboard....http://www.youtube.com/watch?v=EZaQgQIUt8w. There are a few others as well but this one seems to be the most comprehensive.

03-02-2011, 10:32 AM	#1
LIforrelaxin Senior Member Join Date: May 2006 Location: Texas, Lake Ray Hubbard and NH, Long Island Winnipesaukee Posts: 2,875 Thanks: 1,037 Thanked 892 Times in 524 Posts	At 1000lbs that is one heavy motor. Could a toon handle the weight, sure as long as it is designed for it. That is the piece that has to be understood. if the mounting platform can handle the weight and the torque of the engine then everything is fine. Oh yes one other piece the boat has to be able to counter the wieght. On the other side of the equation does a toon really need 557 h.p. engine with 550 lbft of torque? My guess is probably not. Yamaha, V8 beast on produces 350 hp... I didn't see a torque spec but I am sure it is considerably less as well. Its like comparing apples to oranges. While the Yamaha engine may be a nice fit for some pontoons, this beast, well may just be over kill... On the other hand it would sure be cool to sea and watch..... __________________ Life is about how much time you can spend relaxing... I do it on an island that isn't really an island.....

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03-02-2011, 12:30 PM	#3
Wolfeboro_Baja Senior Member Join Date: Jan 2008 Location: Hopkinton NH Posts: 395 Thanks: 88 Thanked 80 Times in 46 Posts	Nice video on YouTube of the new Seven Marine 557 outboard....http://www.youtube.com/watch?v=EZaQgQIUt8w. There are a few others as well but this one seems to be the most comprehensive.