plowing power/trim tabs

[DANK]

Hi all,
I own a 2003 21’ triumph with a 150 hpdi.
I have read many forums on this and spoke to manufactures and it seems most are looking for listing or planning help. I’m looking for a smoother ride and more speed in rough water. I’ve thought of possible filling the front center compartment with water but didn’t. The trim tab sites recommend width equal length of boat but, like most I don’t have the room. The most room I have allows the Bennett 12 x 18 tabs. It seems most like the m120’s but, for the effect I’m looking for make since to go with the largest I can (surface area). Has anyone mounted the 12 x 18 tabs on their triumph and if so come across any problems mounting them? Please anyone with some feedback would be nice.
What ever happen to Sam and his free m120’s from Bennett?

[Putershark]

After on a plane why not just tuck the engine in some to drop the bow back down If that does not drop it enough (can't see why not though) then install a BMS cavitation plate http://www.bobsmachine.com/Products/...stabilizer.cfm to add even more drag when tucked in (king of like flaps on a aircraft) to help bring the bow down even more The plate will also give you some other benefits when not running in rough seas so your return on investment will be quite quick.

Also running with a lot of fuel in the take will help it squat more in the water, but that is only a temp fix as you burn off that fuel load. But from a max distance run aspect, I try and keep as little fuel on board as possible in my boat so I can get my greatest range (for the needed distance ran) and the least amount of draft as possible.

I though would stay way from adding extra weight when not needed. Not only will it lead to more fuel burn, but you do have some limits on total weight you can carry on any boat and it be safe. Those ratings are on a plate on the stern along with the max HP rating. I would rather see you safe and damp then sunk and soaking wet from a hull that has rolled over

[DANK]

Thanks Dave-Putershark but funny you say about bob’s machine plate,
I have bob’s cavitation plate since I bought the boat back in 2003. About using the trim I use the trim all the time. I’m constantly adjusting to conditions. I’ve been around boats for about 20 years now. Of all the boats owned I have never had trim tabs so, I’m not experienced with them. Am I asking for a miracle or something just not possible?
I’ve been going 40 to 60 miles offshore lately and would like to know if the trim tabs could make my trip smoother and faster. I live in the Tampa Bay area so you can understand how far I have to go for deep water.

Here I’ll start and easy question for all that have added trim tabs and know the difference with and without them. Here is a scale on the performance increase in rough water 0 being no gain and 10 being 5x. Please leave trim tab size and brand with answers.

[Putershark]

Good deal DANK and I am a big fan of that plate and have a boat load of other BMS toys installed on mine and it is all good stuff And yes you have a VERY LONG run around here to reach deep water for sure. Trim Tabs would help and the Volvo ones that are on the other 215 thread really look like your best ROI and maybe the easiest to install?

Was talking to my buddy John at Heartland not long ago and he has become a fast fan of them, so you may want to give them a call and see what it would cost Parts and Labor wise to install a set on your 210 hull for I think they have installed a set or 2 by now

You know 210's can ride a little high in the bow I agree and I have seen some running that reminded me of a (now old) Coast Guard 41 footer plowing water! Ha-Ha... To me though that can help keep one from punching the bow square into a wave face, but I fully understand your point about getting it down to help slice through some smaller waves. Weight and Balance is the key in many hulls and the 210 is kind of sensitive to such. Here again as I have stated many times before, that Deep Vee is great for speed, but it makes her somewhat tipsy and it can roll around a lot at rest on the end of a anchor line as you well know

I would also consider putting as much weight when making such runs as far forward into the Mega Hold as possible to help get her bow down. And if you have not do so already, I would get some inner hull drains installed just in case you are lugging around some extra water weight in the stern that you may not be aware of. Other then that Brother, I am fresh out of ideas

[popcone]

I have read all the discussion and seem to have just purchased an unusual 2003 210. It does have trim tabs but even with them full up which is a little above parralel with the bottom she rides level and cuts the water just in front of the center console. In slightly rough water she does not really lift her bow when hitting a wave but plows through it. All this discussion about being light seems to not apply to my boat she rides slightly heavy and stable. It was with a full fuel tank and I have three batteries in the center console. My power is a Yamaha 150 2-stroke. Any comments or ideas??

[k9reno]

I have an 03 210 with a yamaha 150 hpdi....love that motor. I am sorry I dont seem to understand what issues your haveing. my bow comes way up but comes down on plane quickly. I am going to get some trim tabs so I can lower the bow at a lower speed. what kind of top end are you getting. when my boat was brand new with half tank and one person I got 45. 2 yrs ago two full grown adults 3/4 tank and choppy water about 40-40 two weeks ago on erie in 2 ft with 3/4 tank and two 230 + guys 39. seemed to do well

[popcone]

I here the talk of the boat carrying its bow way high. Mine goes way up on take-off but drops quickly. The boat seems to ride level at speed but cuts the water infront of the ceneter console. My take on the conversation seems to indicate the boat should ride with the bow higher up while cutting the water below or behind the console. I just bought the boat and am just making sure it is operating correcly. My last boat was a 21' Cuddy cabin and in the seas I was in Wed.it would have slapped the following sea and went up the wave instead of plowing through it. They say this boat is light but mine seems to ride like a boat half agaiin bigger. I'm not complaining I just want to be reassured nothing is wrong. The gentleman I purchased it from was very carefull and took great care with it. Wed. the visibility was less than an 1/8th mi. and with the Raymarine package on board I was able to avoid several large ships and navigate 10 mi. to the Chesapeake Bay Bridge tunnel. I am in love with the boat, just want it to be right.

[recycle]

Popcone,

I have a 2004 210 that rides like you describe. The folks that have to trim down are lucky.

I first posted about the attitude on 1/27/05, check archives. Altho my Triumph does well this is the first boat I have ever owned that when on normal plane water broke in front of the console.

But I would not call it plowing.

I've just learned to except it.

thxs
Recycle

[Putershark]

All things being equal (including engine mounting position), I do not see water breaking at that point forward when on a plane for a 210 hull as super strange... Some here saw one picture that was taken and posted (I think it was from the 2005 catalog?) with the water breaking behind the console that created somewhat of stir. Problem is when you looked real close at the shot, the picture was taken as the boat was heading off the face of a wave and was not your standard flat water running angle of attack.


I would though like to know what kind of top speed RPM you guys are getting out of these hulls when trimmed out and running in flat water? For you have "may" have props that have too much bite and as such, creating more stern lift than really needed for how you have it loaded... Many forget that part of the job of the prop is to create not only forward motion, but also lift. Like many things though, there is a balance to strive for and top end speed engine RPM is a good measurement of either too much or too little prop bite.


Naturally like one would suspect, if it climbs like a ape out of the hole, but can only run 30 to 35 MPH flat out at let's say @ 4800 RPM WOT... Then you have too much prop and it's time to either back off on the pitch or the diameter (maybe both), this so the engine can come up to it's full recommended WOT speed. Maybe you need to go to a 3 bladed prop instead of a 4 bladed model? I don't know what you all are running now, but such changes can make a boat run (and perform) as different as night and day...


Case in point, I on the other hand am looking for a 4 bladed model (think I found one today though) that will give me the bite (pitch and diameter wise) that I need without a lot of top end speed loss. I tested a few 3 bladed SS models here of late and though the boat launched and ran like a Raped Ape (in a straight line) it did not take much of a turn to ventilate and blow them out . Ahhh yes, the search for the perfect prop (much like the Holy Grail) is never ending many times Will keep you updated on that Saga though as I test this next puppy out


I would also make sure that any 190 / 210 hull has inner hull drains installed. As I stated before with my old 210, that when I jumped into the Mega Hold to install the false floor, it sounded as if I was walking on a sponge inside the hold and that let me know that I was hauling around a ton of extra water weight... If I had paid attention to my fuel tracking sheet sooner and noticed the extra fuel burn from the extra weight, it may not had gotten to that point, but we all live and learn

Easy to see though how the extra weight from some water inside the inner hull, could hold down the running angle of attack of your hull, so you may want to look for such IF you don't have those drains installed already. Easy fix though if you do find some extra water ballast and the site search tool will land you a few threads on that subject and how to correct for such...

[DANK]

Hi all and thank you for the reply's'
K9reno (Dick) yes that it is a great motor. It seems my boat is running about equal with speed and load as yours. Well I going to get some trim tabs came across great deal on some bennett m-120's for about 325 after shipping. No way I could go wrong and all seem happy with them.
thank you all,DANK