Problem with wake control

[fadenit]

I have just purchased a 1986 19' Trophy CC w/ a 90 hp Evinrude V4. I am having a serious issue with the amount of wake generated by this boat, even at extremely low speeds. Trimmed all the way in and with a hydrofoil installed, I am still running stern low and creating a ridiculous amount of wake. Is there anything I can do to help rectify this problem? I am tired of the hateful looks and words from fellow fishermen!! Help!

 

[steelespike]

Re: Problem with wake control

If you have a problem with no wake zone speeds generating to much wake you may be rnning too high idle speed.if your running at just about any speed above no wake you will generate pretty good wake.I would say any speed over 6mph has the possibility of generating affensive waves.You should be able to idle down to no wake easily.About 700 rpm.

 

[fadenit]

Re: Problem with wake control

I have noticed other similar boats (even larger than mine) travelling at greater speeds are producing a lot less wake. I seem to be the only one on the water with this issue. It is very disturbing. Is the high idle an internal engine problem, and how do I correct it? Thanks

 

[Dhadley]

Re: Problem with wake control

What does your motor idle at in gear? Is it near the 700 Steelspike mentioned?

 

[fadenit]

Re: Problem with wake control

My boat does not have tach, so I really do not know the RPMs. It looks like I am going to have a technician ride along to determine the problem. Unless there is some other way you guys may know of.

 

[steelespike]

Re: Problem with wake control

I believe there should be an idle speed stop screw.The throttle stop screw
should be on the starboard side of the motor near the top below the spark advance rod.Idle should be adjusted warm in gear moving.

 

[fadenit]

Re: Problem with wake control

Thanks so much! Not knowing all that much about it, I believe I will let a pro take a look. I hope this will help with this problem. I don't know what else to do. Thanks again

 

[ondarvr]

Re: Problem with wake control

I have a 19' CC and I've had both a 90HP and 200HP Evinrude on it and if you have a big wake at idle with the 90 then something?s not right, even my 200 will idle slow enough that the wake is small and no one would complain about it. When you put the motor in gear does it slam or bang due to a very high idle setting?

The other thing that may create a larger than normal wake would be wet foam in the hull, this will add a great deal of weight so you'll be sitting lower and plowing through more water.

We all assume at this time you're at the lowest possible throttle setting when this wake is being produced.

 

[steelespike]

Re: Problem with wake control

Just wanted to add if the boat has absorbed that much water it would have a pretty sluggish hole shot and sit low in the water.
I'm betting the idle is just too high which by the way can cause premature shift dog failure.In 60 years of boating I've never had a boat that produced any more than ripples at idle speed.

 

[fadenit]

Re: Problem with wake control

My stern does sit low in the water. Is there a way to dry out the foam, if that is one of the problems (silica or moisture absorber)? I am going have a tech look at the idle problem this weekend and have a tachometer installed as well.

 

[steelespike]

Re: Problem with wake control

Tach is a great idea.How is the hole shot.If enough water to cause a wake
problem hole shot would really struggle.If it has absorbed water most of it will be in the foam under the floor.only way to dry is to replace the foam.

 

[fadenit]

Re: Problem with wake control

Could the prop pitch also be a factor in this problem? I have read that it possibly could? What is a good all around pitch for my set up, 19' CC w/ 90hp?

 

[steelespike]

Re: Problem with wake control

Pitch isn't likely to cause a wake problem but certain boats with high pitch props might have trouble getting down to trolling speeds.
To determine your best pitch we need to start with your present pitch,
max rpm and speed.Prop size is usually on the barrel of the prop or under the prop nut.

 

[ondarvr]

Re: Problem with wake control

What about it banging into gear and is throttle at the lowest possible setting?