2006 Rinker 192 Captiva-Porpoises at normal cruise

[vicman]

I recently purchased a 2006 Rinker 192 Captiva with a 190 Volva Penta, SX outdrive. It came with a four bladed 14.25 x 19p prop. Test drove the boat and it seem to do well (practically empty gas tank). When I took it home, filled the 35 gallon tank with gas and took the family out (wife and two small kids) , the hole shot seemed to rise excessively, adding full power made it lay on over, but it did'nt seem normal. At a decent cruise (20-30mph) the boat porpoised alot and seemed to do it at all different ranges. The trim was all the way down, but by looking at the spray from the side of the boat, we were out of the water until the last 1/4 of the hull. I have heard prop issue, hydro foil and trim tabs. Can anyone help me with the best thing to do?

 

[TilliamWe]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

Confirm that the drive is actually going down all the way, would be the first thing I would do.

 

[642mx]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

+1 Check and make sure the drive goes all the way down. Don't always trust the trim gauge either... trim it down until it stops.

 

[stubbsboogie]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

I have the same issues on mine. I am running a 21p aluminuim prop. We just got it a few weeks ago. Love it so far, even with this small issue.
What I have found helps alot is weight distribution. you have to get some weight in the bow. Also if you are sure the trim is goin all down just give it a touch. more gas, then back off a bit This hull seems to have a narrow "sweet spot"

I am about to put some Samrt tabs on mine. Supposedly they take most of that tendancy out. This is a link to one of the discussions on this.
http://forums.iboats.com/showthread.php?t=247971

Good Luck

 

[vicman]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

I am pretty sure the drive is all the way down, just based on the sound of the trim motor before I start the engine, and left it in that position or kept trying to add down trim. I have always had bass boats or fish and ski's, and this boat acts the same, as when you have a bass boat up on the 'pad'. Any up trim makes it worse, but you can't trim down anymore. Two things worry me: 1) If this happens at 35 mph and less, thats the speeds I will be at most of the time with water sports. 2)I spent 6 months convincing the wife that buying a bigger ski boat was a good idea, and you can imagine the looks I got when we put the boat in the water and discovered this problem!!!!! Keep the ideas coming!!

 

[Knightgang]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

You said it was fine on the seatrial, and that was on close to an empty fuel tank. This appeared after filled it with fuel. Where is the tank located in the boat? Sounds like a weight distribution issue to me...

Could also be a prop issue, pose the question over int he prop forum with all of the required info (boat, engine package, outdrive, prop, rpms, etc.) and see what they say...

Smart tabs should help, and might solve the issue. But be sure to double check that the trim is going all the way down, and there is not something (like a faulty connection) that is stopping the down trim prematurely...

 

[stubbsboogie]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

It sounds to me like your issue is much more severe than mine. Typically if it does porpoise I can level it right back out, pretty easy.

I really think probably though it has to be a weight issue. These boats are stern heavy. It is significantly increased with all passengers riding in the aft area. Put someone up front and see what that does.

There is a difference in performance when they are full of gas. Better from half down. But my tank is 42 gal as opposed to 35. (guess different since you have a volvo, and I have Merc.)

Maybe a higher pitch prop might help.

Just throwing out anythin I can think of.

 

[vicman]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

From what I am reading, everyone seems real high on Smart Tabs. Does this sound like something that will fix my problem?

 

[Bondo]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

From what I am reading, everyone seems real high on Smart Tabs. Does this sound like something that will fix my problem?

Ayuh,... They Might,... I've never seen Smart Tabs hurt a boats handling,...
But I'd try a standard 3 bladed prop 1st....

 

[itsaboattime]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

Try a few things before you dump money in smart tabs. try redistributing the load. Move some gear to the bow area. Move a person, or 2 if small kids, to the bow area. 35 gallons of gas is quite a bit of weight if your tank, like mine, is in the stern.

physically verify that your outdrive is all the way down. The sound of the trim motor only tells you that it is under strain, not that the outdrive is all the way down. There may be a blockage not allowing it to trim all the way down. This would cause a strain on the trim motor. You never know until you look.

Adding smart tabs may solve your porpoising troubles but it doesn't fix the reason for the porpoising. I would concentrate on finding the reason for the problem, find that and I'll bet your boat will come up to plane no troubles, without having to buy and install smart tabs.

 

[QC]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

If you liek to fiddle with stuff, helm adjustable tabs. If budget and you'd rather point her and go, Smart Tabs. I like both solutions a lot. Yes add some weight in the bow, but ultimately she'll need tabs based on what you describe. Even if the drive is not going all the way down, she porpoises too easily and you will not fix it with weight and drive trim alone.

Don't think of tabs as a fix, think of them as the best tool you could add to a v-hull. You will LOVE your boat after. Guaranteed.

 

[TilliamWe]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

While I agree see their points recommending trim tabs, I think the boat shouldn't behave this way at all. I think you should actually solve/fix the problem, then add the tabs if they will help in other ways. Just bolting on trim tabs is not the first solution, in my opinion.

 

[QC]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

Yes ^^^ but I have a had a new boat that couldn't be fixed without surgery. Fuel tank location can be huge. My boat was not right with the ice chest mounted in the bow, people in the bow and full tanks. Tanks were mounted too far aft. Empty fuel, good, full fuel, bad . . . That's when I fell in love with helm adjustable tabs. No matter what the load and combo, I could make her ride and perform right.

Maybe there is an obvious problem. Maybe there is some soaked foam. Maybe the tank was wrong from the factory. To what lengths will you go? Ultimately, unless the hull has rocker, porpoising problems are weight distribution. She should cruise at normal cruise speeds with neutral trim, that's why I discount trim angle. Of course I would want all of the travel I could get, but this sounds waaaaaaay too familiar to me. If you can "fix" whatever is wrong, great! If not, and you plan to keep her, get tabs and get over it. I've had to once. There was no other way except adding weight or cutting out the tanks. The former is blasphemy and the latter was not in the cards at the time.

 

[drinker 192]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

I have a 2003 192 that I bought used, it has a little whale tale attached to the outdrive and in order to get top speed I have to trim it up almost 3/4 up.
The boat runs fast at that speed (on smooth water) but is that high of a trim normal to get on top speed with this boat?

Thanks,

Yes ^^^ but I have a had a new boat that couldn't be fixed without surgery. Fuel tank location can be huge. My boat was not right with the ice chest mounted in the bow, people in the bow and full tanks. Tanks were mounted too far aft. Empty fuel, good, full fuel, bad . . . That's when I fell in love with helm adjustable tabs. No matter what the load and combo, I could make her ride and perform right.

Maybe there is an obvious problem. Maybe there is some soaked foam. Maybe the tank was wrong from the factory. To what lengths will you go? Ultimately, unless the hull has rocker, porpoising problems are weight distribution. She should cruise at normal cruise speeds with neutral trim, that's why I discount trim angle. Of course I would want all of the travel I could get, but this sounds waaaaaaay too familiar to me. If you can "fix" whatever is wrong, great! If not, and you plan to keep her, get tabs and get over it. I've had to once. There was no other way except adding weight or cutting out the tanks. The former is blasphemy and the latter was not in the cards at the time.

 

[QC]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

I can't comment about whale's tale performance . . .

 

[vicman]

Re: 2006 Rinker 192 Captiva-Porpoises at normal cruise

Thanks for all the knowledge and ideas. I am afraid there hasn't been anyone locally to ask and this is a new one for me. I also failed to mention the back hatch over the engine compartment. This boat sat outside I know at least from labor day (2 months) until I got it Halloween day. There is a 1 inch tear on the side of the pad for the engine compartment. This compartment lid is real big, probabley 3 ft by 4 ft. The padding is full of water. They got a ton of rain in the last couple of months. It is so heavy the gas shocks (2) will not hold the lid up and I use a board to prop it. With it propped up, I can kneed a double handful of water out everytime I walk by it. It is getting lighter but still too heavy for the shocks to hold up. Does anyone know a better way to dry it out? Is it normal for this much water to soak in through the stitching. If it ever drys out, the only water it should see is wet kids climbing over occasionally. I would like for it to dry before I patch the little rip, but its been two weeks already and its still like a sponge. I don't think its so much weight that this is my porpoising problem, but I'm sure it does'nt help. I am supposed to talk to the Rinker Customer Service Rep tommorrow. He thinks its a prop problem. I just hope it can be fixed. Again, thanks for all the help and keep it coming.

Vic