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slow speed rooster tail / jet adjustment

aleestma

Active Member
Messages
7
Reaction score
1
Points
40
Boat Make
Yamaha
Year
2021
Boat Model
252SD
Boat Length
25
My 252sd is throwing a rooster tail at no wake speeds. I have people telling me to trim down, embarrassingly. I do have thrust vectors but I can’t imagine that this would cause that. Is there an angle adjustment for the jets?
 

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Looks to me it is the port side. Do you have any pictures of the jetpumps and TV's? There is no trim. Something is not aligned (nozzle/bucket) or hung up (TV's).
 
Last edited:
Pic the the TV, something is amiss I bet with them or your bucket has an issue.
 
The jet nozzle is close to the surface......Mine has w large wake behind it especially if I have a few bodies up front in the bow lounge but that looks larger than normal..............kinda looks like a steering thruster may be stuck up in jet nozzle spray allowing water to ramp up in a rooster tail.
 
I used to see this as I went into the marina in no wake mode. Annoyed me but did not make a huge difference.
 
To much weight in the bow?
 
To much weight in the bow?
not really. To be honest at no wake mode the Yamaha’s always seem to ride a bit nose down. Watch the Miami boat ramp videos on the the YouTubes and you’ll see the dip. Never had more than capacity on our 21 footer and it had a propensity to dip at low speeds.
 
not really. To be honest at no wake mode the Yamaha’s always seem to ride a bit nose down. Watch the Miami boat ramp videos on the the YouTubes and you’ll see the dip. Never had more than capacity on our 21 footer and it had a propensity to dip at low speeds.
you cant use Miami Boat ramps as an example, the Yamaha's on thier always have 10+ people in the bow, lol
 
@zipper has the side right, I believe, which brings up who else is in the boat with you. If nobody, in that pic, or in the bow, then reorient the passenger(S) and see what your result is.

You are the ballast, if you're alone, and that would be why it's most prominent on the port side - your weight is keeping the starboard nozzle in the water.

You can also adjust the nozzle to toe in/out, and it may help with the spray. Slightly inward toward center for both sides will concentrate the wash.

Not certain if they've updated the nozzles for slightly directional thrust with the newer boats, but a side view at the nozzle may show you that it can be rotated (possibly assembled incorrectly?), it's worth a look

It shouldn't have anything to do with your Thrust Vectors. Pics of your nozzles from multiple angles would help as well
 
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