Tilt/Trim Position for best hole shot

[StingRay_90V4]

In just wondering were do most people put the trim at for a good home shot. Obviously not any where near the top of the trim gauge. I wonder , is there a different position for a boat when you're just cursing vs a boat that is pulling a skiier or tuber ? I have noticed now that my boat is working much better. Even when my trim is slightly below the half way mark the motor now has the torque to spin the prop. Blow it out more or less I guess. So I need to really bury the motor a fair amonmujt to stop it from happening. Not all the way. But maybe 5/8s of the way down. Idk if this is routine for most people ? Just curious where most people trim to for the best hole shot ? I know every boat is going to be different.

 

[Alumarine]

I think you'll find most people start with the the throttle fully open and the motor trimmed all the way in and once they get on plane trim out and reduce throttle if needed.

 

[tpenfield]

Yes, in . . . all the way in or pretty close to it. about 50% throttle initially then go to 100% within a second or two, once the boat starts to rise up. . .

Of course it depends on what you have for an engine. Too much power applied right away, and you'll blow out the prop (cavitation).

 

[StingRay_90V4]

1990 Evinrude 90 hp crossflow v4. With the stock bro 17p prop. Has a lot of low end torque. It does tend to blow out the prop if I go wot and arnt trimmed in a lot. I was just curious how some other people find they get there best hole shot.

 

[Scott Danforth]

there is no set-it-and-forget-it for trim and boats. the trim will be different for conditions, wind, speed, load, weight balance, etc

I wear the trim button out on most boats. trim all the way in, mash throttle, and as boat is coming out of the hole, start backing off throttle while thumb is pulling up on trim switch so that as bow is settling from hole shot, im at about 1/4 up and adjust from there.

as I slow down and come off plane, I also trim down. it becomes second nature

 

[Silvertip]

Blow out is much more likely to happen when trimmed partially up than when trimmed all the way in (down). Are you certain you aren't dealing with a spun prop hub rather than blow out?

 

[roffey]

I start with the trim all the way down and push the throttle all the way down as well. If I start with the trim up My bow just points to the sky and does not come down, makes a fantastic wake, cant see anything off the bow but a great wake, lol. The only time I blow out the prop is when I am trimming the outdrive and I over do it a little, almost a daily occurrence.

 

[Chigwalla]

Are you certain you aren't dealing with a spun prop hub rather than blow out?

Beat me to it.

As an aside, most of the trime switches I replace are because the "up" contacts are toast.
That makes sense when you ask the customer to describe how they use it: most people trim all the way down and, when they're on plane, 'blip' the trim up a few times. In our water taxi (Yanmar 6LP pushing a B2 drive in a 24' Daigle), it's all the way down, then 4 'blips' up for flat water and a light load in the boat.
That equates to maybe 2 or 3 degrees of trim...but the hole shot is all the way down (in).

 

[briangcc]

All the boats in my sig....alll the way down and then trim up when on plane.

 

[roffey]

Beat me to it.

As an aside, most of the trime switches I replace are because the "up" contacts are toast.
That makes sense when you ask the customer to describe how they use it: most people trim all the way down and, when they're on plane, 'blip' the trim up a few times. In our water taxi (Yanmar 6LP pushing a B2 drive in a 24' Daigle), it's all the way down, then 4 'blips' up for flat water and a light load in the boat.
That equates to maybe 2 or 3 degrees of trim...but the hole shot is all the way down (in).

Sounds like you are a tech, what you describe is exactly what I do. Is that bad for the trim switch? Should I stop or at least not do it as much?

Reads like I'm watching to much porn on my computer, LOL.

 

[Blind Date]

One of the big advantages of the Alpha 1 over the previous gen MerCruiser sterndrive was its ability to negatively trim. I've never owned a boat that didn't jump on plane the quickest while the drive was trimmed all the way in(negatively). A big reason for pulling the old sterndrive out of my '79 CVX18 and replacing with an Alpha Gen 2. Less bow rise = quicker to plane.

 

[StingRay_90V4]

The prop definitely isn't spinning in the hub. It only does it when I have the trim around the flat level. Its no where's near full down at that point. Its basically the half way piont on the trim gauge.The times I have totally burried the trim. It does not blow it out at all.

 

[QBhoy]

Hi
I have the same technique as Scott Danforth has described...different situations require different approaches on my boat...it becomes a bit of a skill to get it optimised for best results.
That said...it really perhaps depends on your application. If I had less power, I might be inclined to trim all the way in to keep the projection of the bow firmly downward to get over the hump.
As Scott says...it becomes second nature and habit for your thumb to naturally come at rest over or on the trim button. It becomes a natural action to trim in when turning, slowing down etc.