Boat just plows through the water

[jamowers]

I recently was given a 19 ft 1989 citation with a 4.3 omc. While on my other boat an 18 ft merc 120hp i could plane slow or fast. On the citation it just pushes the bow straight up. Feels like its going to flip. Does this boat require hammering the gas to get it out of the water or what. Feels like im at a 45 degree angle when doing so. Cant get WOT since she wont come up. Any ideas of what to check. It has an 14.5x 19 prop. Drive does go all the way down at a slight angle down from the bottom of the boat.

 

[Don S]

Re: Boat just plows through the water

Trim the drive up some. You have a Cobra drive with trim and tilt.

 

[jamowers]

Re: Boat just plows through the water

I do...they do the same thing just at smaller increments correct? First boat with both.

 

[Don S]

Re: Boat just plows through the water

Tilt and trim is the same thing. Trim it higher. If your bow is plowing through the water as your title implies, you need to trim the drive up to get the bow up.
If you happen to have trim TABS too, bring them all the way up until planed also.

 

[jamowers]

Re: Boat just plows through the water

I mean by plowing the bow goes straight up and the aft end goes deep. Like this / . I was only trying it whith the drive all the way down. There are no trim tabs on the boat.

 

[Don S]

Re: Boat just plows through the water

I mean by plowing the bow goes straight up and the aft end goes deep. Like this /

Oh, you mean like this http://youtu.be/hSufUWimFHM

 

[mcleaves]

Re: Boat just plows through the water

Lol

 

[skargo]

Re: Boat just plows through the water

Wth?

 

[mcleaves]

Re: Boat just plows through the water

That's Don after a few too many beers

 

[reddogg]

Re: Boat just plows through the water

That was a really cool vid, but how in the hell did those motors keep running being submerged? Specially modified?

red

 

[jamowers]

Re: Boat just plows through the water

LOL...well in a word yes. Like i said I tried to go slow fast and nothing...just buries the *** end into the water....any ideas.

 

[Randy J]

Re: Boat just plows through the water

prop up causes the bow to rise steep i start off all way down after speed up then i tilt up till planed out i never cared for take off like in a tail dragger piper cub ! both similar cant see straight ahead huh???

 

[emoney]

Re: Boat just plows through the water

Are you pushing the throttle all the way forward and immediately? What I mean is, are you easing into the throttle or hammering it?

 

[JSMoore]

Re: Boat just plows through the water

I had a small bass boat once that stuck it's nose in the air and wouldn't plane off. It did OK with just me on board. But, as soon as I put a fishin' buddy on board, it would bury it's tail and stick it's nose in the air. The only way I could get on plane is if my buddy crawled up on the bow to force it down.

The answer was in the prop. I can't remember what it came from the factory with. But, it was set up for a higher top speed - small diameter & high pitch. I went to a slightly larger diameter and less pitch. In the end, I sacrificed about 3 - 5 mph top end. But, I could plane off very easily - no matter what load I had on board.

I would look in the direction of the prop. See what others in your area, with similar size, weight & power, are running. Just an idea......
JSM

 

[jamowers]

Re: Boat just plows through the water

I am just easing into the throttle. I am afraid it will flip...probably not just not used to the bow going that high. Ill ask around about the prop. My old boat used to do it when sterndrive covered in weeds, that is not the case here.

 

[a70eliminator]

Re: Boat just plows through the water

He's carrying 1/2 a ton of saturated flotation foam in the stern with not enough power to pull out of the hole.

 

[jamowers]

Re: Boat just plows through the water

If this is the case would trim tabs even help?

 

[a70eliminator]

Re: Boat just plows through the water

No they wont help, you should at least take a couple below deck core samples aft.

 

[jamowers]

Re: Boat just plows through the water

I already have one boat with no floor so not getting into that again....ill see what comes out with a few holes through the bilge to side stringers. Redoing the floor sucks and would never do again...I'd dump the boat first.

 

[Wingnutt]

Re: Boat just plows through the water

I gotta agree, it does sound like a case of waterlogged foam.