How does the QUIET CRUISE TECHNOLOGY work and is it on the 2019 models

[spaceman2]

I wonder how that works and if it does any good? Im looking at the Yamaha jet boats and which models have this?
Im looking maybe towards a 24ft model if I can find one at a good price.

 

[swatski]

I wonder how that works and if it does any good? Im looking at the Yamaha jet boats and which models have this?
Im looking maybe towards a 24ft model if I can find one at a good price.

Basically in the new 24 foot models they broke up large stern compartments into smaller ones to diminish crazy amount of vibration and noise, and added some padding.
These boats are still loud, but the new ones are approaching sane levels, still not quiet but tolerable.

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[Julian]

They also changed the coupling between the engine and gear reducers to reduce noise. Not sure - but they may have also changed the engine mounts.

 

[J-RAD]

I'm not sure how relevant this info is anymore...? When I was researching prior to purchasing in 2016 between a Chaparral Vortex 243 and my AR240. BoatTest results showed the Yamaha was as quiet at full throttle as the Chaparral was at idle. So the extra sound deadening has proven somewhat effective by comparison.

I tolerate the sound alright. The difference with these boats is that the sound is higher pitched coming from twin 4 cylinders at running at higher RPM when compared to an inboard V8.

 

[spaceman2]

I'm not sure how relevant this info is anymore...? When I was researching prior to purchasing in 2016 between a Chaparral Vortex 243 and my AR240. BoatTest results showed the Yamaha was as quiet at full throttle as the Chaparral was at idle. So the extra sound deadening has proven somewhat effective by comparison.

I tolerate the sound alright. The difference with these boats is that the sound is higher pitched coming from twin 4 cylinders at running at higher RPM when compared to an inboard V8.

Y

I'm not sure how relevant this info is anymore...? When I was researching prior to purchasing in 2016 between a Chaparral Vortex 243 and my AR240. BoatTest results showed the Yamaha was as quiet at full throttle as the Chaparral was at idle. So the extra sound deadening has proven somewhat effective by comparison.

I tolerate the sound alright. The difference with these boats is that the sound is higher pitched coming from twin 4 cylinders at running at higher RPM when compared to an inboard V8.

Wonder if there are any Youtube videos showing the new 2019 24ft models and the sound level coming from the engines while riding in them?

 

[J-RAD]

Y


Wonder if there are any Youtube videos showing the new 2019 24ft models and the sound level coming from the engines while riding in them?

I was able to find the BoatTest specs in the video for the 240. The info should still be relevant, to my knowledge the sound deadening hasn't changed since the introduction of the current 24 ft hull design... I haven't found any videos on the newer model years that give the same specs. They mostly highlight the things that have updated year to year.

The sound info starts at 5:43.

I couldn't find the aforementioned BoatTest info for the Chaparral, but it's there in one of the youtube videos.

 

[spaceman2]

Wonder if there are pictures of how they broke up large stern compartments into smaller ones to diminish crazy amount of vibration and noise, and added some padding. Would be interesting to see what it looks like.

 

[spaceman2]

Looks like there are lots of updates to the new 2019 19ft models even a new wakesurfing technology that creates the largest, cleanest wake surf ever seen behind a jet powered boat.
https://www.yamahaboats.com/news/new-19-foot-boats-and-major-updates-for--2019-yamaha-boat-line/

 

[swatski]

Wonder if there are pictures of how they broke up large stern compartments into smaller ones to diminish crazy amount of vibration and noise, and added some padding. Would be interesting to see what it looks like.

Yes there are plenty pictures on 2015+ 240/242 boats... showing wet compartments built into the stern (enclosed behind swim deck cushions), a lot of foam padding covering the inside of the engine hatch door and engine-bay walls/bulkheads etc. All that contributes to having way less noise emanating from the back and throughout the boat's hull.
There is less space for extra ballast (built-into the rear compartments) in these boats but that's a relatively minor concern in most cases and we now have the Custom swim deck bag anyway - for those who wake surf.

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[J-RAD]

Wonder if there are pictures of how they broke up large stern compartments into smaller ones to diminish crazy amount of vibration and noise, and added some padding. Would be interesting to see what it looks like.

Maybe not the greatest pic to show it, but on my 2016 AR240 you can see how relatively compact the engine compartment is and the sound deadening insulation lining the compartment. What you can't see in the picture is the inside of the top hatch which is lined with 2 layers of foam.