Exit diameter of exhaust on SF Badass

[Pablo]

My chan with a b pipe and atp waterbox was SUPER loud and pingy.
My circus with pfp and waterbox is no where near as loud and more throaty.

Yeah. It's ear ringing without a helmet and still loud with one...and I'm sure the neighbors love it.

 

[yamanube]

Why not get a quieter waterbox?

 

[Harbor]

One thing I'll mention, I noticed on my ski, that the exhaust outlet @ times is above the lake, (out of the water) when it's the loudest.

Doesn't the chan have an extended hull/plate that would cause the exhaust tube to almost always be above and out of the water?

Wondering if this might be the issue

 

[yamanube]

One thing I'll mention, I noticed on my ski, that the exhaust outlet @ times is above the lake, (out of the water) when it's the loudest.

Doesn't the chan have an extended hull/plate that would cause the exhaust tube to almost always be above and out of the water?

Wondering if this might be the issue

If you run the plate a bit long this is definitely culprit, my Chan was the same and with the H2O box it was a bit loud for my liking.

 

[Pablo]

Why not get a quieter waterbox?

I've used multiple water boxes over the years and this setup is always loud. This same water box in a badass was much quieter.

My ride plate is cut short, not flush, but about +2" from hull.

I doubt I'll cut open a perfectly fine ski just for this purpose but it's been on my mind for a year or more. I've made some short water box inlet and outlet extensions with solar composites carbon sleeve. I have zero worries about making the exhaust tube itself but more about proper fitment. In the end, I'm nearing the end of my stand-up career so it may b just a fleeting thought.

 

[paczowski123]

I've used multiple water boxes over the years and this setup is always loud. This same water box in a badass was much quieter.

My ride plate is cut short, not flush, but about +2" from hull.

I doubt I'll cut open a perfectly fine ski just for this purpose but it's been on my mind for a year or more. I've made some short water box inlet and outlet extensions with solar composites carbon sleeve. I have zero worries about making the exhaust tube itself but more about proper fitment. In the end, I'm nearing the end of my stand-up career so it may b just a fleeting thought.

That last sentence was the dumbest thing I've read all year..