- Messages
- 2,729
- Reaction score
- 1,358
- Points
- 222
- Location
- Lake Oconee, GA (Greensboro)
- Boat Make
- Yamaha
- Year
- 2016
- Boat Model
- 242 Limited S E-Series
- Boat Length
- 24
From Boats.com, this is a really excellent article, with specific mentions of MEASURED noise reduction, and more (written back in August, by Charles Plueddeman:
http://features.boats.com/boat-content/2014/08/2015-yamaha-240-series-ultra-quiet-surefooted-tracking/
This is a wonderful article, with TONS of specifics. Charles P did a great writing job, talking about ALL of the new and exciting things now available to use thanks to Yamaha on this series of boats.
Also, another video which accommodates this, talking about the articulating keel:
http://features.boats.com/boat-content/2014/08/video-yamaha-ar-240-keel-design/
Some of y'all may like his explanation as to HOW Yamaha accomplished this noise reduction - This is the first time I have read SPECIFICS of what was done (and I quote):
Yamaha did some easy things to reduce the noise, such as placing thicker insulation under the engine hatch and doing a better job of sealing the engine bay. More challenging was developing a new material for the coupler between the engines and jet drive shafts and redesigning the shape of the jet pump inlets to reduce turbulence. Even the placement of the adhesive that bonds the liner to the hull and the liner design itself were fine-tuned to limit resonance of engine and pump noise through the hull.
Hopefully this is still more to help out some NEW 2015 Yamahaa owner to come !
Best Wishes, Mikey Lulejian - Lake Oconee, GA
http://features.boats.com/boat-content/2014/08/2015-yamaha-240-series-ultra-quiet-surefooted-tracking/
This is a wonderful article, with TONS of specifics. Charles P did a great writing job, talking about ALL of the new and exciting things now available to use thanks to Yamaha on this series of boats.
Also, another video which accommodates this, talking about the articulating keel:
http://features.boats.com/boat-content/2014/08/video-yamaha-ar-240-keel-design/
Some of y'all may like his explanation as to HOW Yamaha accomplished this noise reduction - This is the first time I have read SPECIFICS of what was done (and I quote):
Yamaha did some easy things to reduce the noise, such as placing thicker insulation under the engine hatch and doing a better job of sealing the engine bay. More challenging was developing a new material for the coupler between the engines and jet drive shafts and redesigning the shape of the jet pump inlets to reduce turbulence. Even the placement of the adhesive that bonds the liner to the hull and the liner design itself were fine-tuned to limit resonance of engine and pump noise through the hull.
Hopefully this is still more to help out some NEW 2015 Yamahaa owner to come !
Best Wishes, Mikey Lulejian - Lake Oconee, GA
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