Smart Tabs trend

[sid the squid]

Re: Smart Tabs trend

Are there any drawbacks to trim tabs?

 

[str8down]

Re: Smart Tabs trend

What do you recomend for my 23ft Maxum with a 210hp IO? I would like to avoid going to the costly Smart Tabs II if possible. Will the 80's work for my application?

 

[JamNJ1955]

Re: Smart Tabs trend

Thanks Dutch

 

[Jdeagro]

Re: Smart Tabs trend

str8down;<br />You do not need the Smart Tabs II as your boat is not heavy enough. Also the 23' includes the swim platform - the hull length is more like 21'.<br /><br />Use the ST1290-80 if the 210 is a V8. Otherwise use the ST1290-60 .

 

[Jdeagro]

Re: Smart Tabs trend

JamNJ;<br /><br />Use the ST1290-60 ( I make up the charts and understand that they are not exactly correct for I/O's) New chart in the works.

 

[rabbott]

Re: Smart Tabs trend

I've been reading up on hydrofoils and in doing so came across the smart tabs on several sites, it sounds like exactly what I need. <br /><br />I do have a couple questions, I have a swim ladder on the back, and from the pictures I've seen it looks like the plates would block the ladder? Can they be mounted closer to the drive or would this negate any beneficial effect?<br /><br />I would also like a recommendation for my boat, a 17'7" 2000 Bayliner capri runabout with 135hp 4 cylinder i/o.<br /><br />Thanks!

 

[Jdeagro]

Re: Smart Tabs trend

rabbott Va;<br /><br />If the swim ladder comes off the back of the swim platform you should have no problems mounting the trim tabs there as the tabs are only 9" deep and the ladder should be back about 18" or more.<br /><br />If the ladder comes off the transom then you should move the tabs in closer to the motor. You should stay 8 to 9" away (min) from the motor. The only down side to moving the plates in is that you will not gain all of the lateral stability that you could get. All of the other benefits will be the same.<br /><br />Use the ST1290-60!

 

[meek77]

Re: Smart Tabs trend

Nautijohn,<br />I have an 86 four winns liberator (deep V hull) with the 5.7L Merc 260. Usually i cruise around 35mph and WOT on a good day is around 52mph. I am undecided between the 60 or 80 pounders. Also, when i do buy them, how is the location on the back of the transom determined, in terms of space between the two tabs?

 

[Jdeagro]

Re: Smart Tabs trend

Use the ST1290-80.<br /><br />It is always best to install the tabs outboard as much as possible. This will maximize the lateral stability. If they need to be moved inboard more, the performance will not change except that the lateral stability will not be as good as it could be otherwise.<br /><br />Anticipate a more ecopnomical cruise and an increase in top speed of about 2MPH. They are available here on Iboats.

 

[xfelony]

Re: Smart Tabs trend

NautiJohn,<br /><br />I purchased the ST1290-80 tabs and put them on a Wellcraft 186 - 4.3LX. How would I tell if they are to stiff? What can I do to test if the ST1290-60 tabs are a better fit for the boat? <br /><br />So far the tabs have done everything they are supposed to...little or no bow rise, lower planing speed, more stability at crusing speed. <br /><br />I am just not sure if moving to the 60lbs actuators is required/necessary<br /><br />Thanks...<br />XF

 

[txswinner]

Re: Smart Tabs trend

I goofed and put my tabs even with the outer edge of my Ranger and they work wonderful and total stability at WOT.

 

[phantoms]

Re: Smart Tabs trend

What would you suggest for a 79 Cobia Charger 16ft V-Hull with a 100HP Johnson O/B? Cobia listed the hull weight about 900lbs and Johnson lists the O/B at 300lbs. I also have the battery and about 15gal. of fuel storage mounted in the stern.<br /><br />I currently have a stingray Hydrofoil. Would the performance of the boat be equal (top speed, getting on plane, etc) changing over to Smart Tabs. I'm very happy with the improvement of the Hydrofoil except for mid to high speed turns.

 

[Jdeagro]

Re: Smart Tabs trend

xfelony:<br /><br />The top speed of the boat is generaly the test. If the boat did 45MPH without Smart Tabs then it should run 47 MPH or more with them. If you are experiencing a reduction in speed, the first thing is to reduce the pressure by moving the actuator attachement to the "Plate Bracket" down the long slot closer to the plate. This will not change the 25 degree angle, it only changes the leverage point. If it is required to go to the 60 Lb actuators we will exchange them as long as it is done within 30 days of purchase. The adjsutment shold not take more than a few mn.

 

[Jdeagro]

Re: Smart Tabs trend

TXswinner;<br /><br />Glad to hear your happy!

 

[Jdeagro]

Re: Smart Tabs trend

Phantoms:<br /><br />The problem with high speed truns in that the foil is lifting the boat from the center and causing a teeter totter effect ( it wants to lay over easy). The foil also increases the lift as the boat goes faster, which pushes the bow down, and makes it dig in the turns as well as lay over. You most likely need to slow down in turns.<br /><br />Smart Tabs do not work this way, they provide maximum lift when the boat is at slow speeds (much more than any hydrofoil) and reduced lift when at crusing speeds. Additionally the lift pressure is adjustable to the needs of the boat.<br /><br />The excessive stern leift at crusing speeds that is typical of a hydrofoil (especially if the motor is not raised) cause excessive bow down attitude which increase fuel consumption. The inexpensive hydrofoils often end up costing more money in fuel every time the boat is used.<br /><br />As for ease of planing, improved acceleration, there is no comparison between the Smart Tabs and the hydrofoils. If you are happy now, you will be Dancing in the street with Smart Tabs.<br /><br />Read the Performance Guarantee here in the Mega mall under Smart Tabs listings.

 

[jeffljones]

Re: Smart Tabs trend

Hi John,<br /><br />I've got a Four Winns 200 Horizon with the 275HP V8. We pull tubes and wakeboard behind it and find that it likes to get on plane at about our wakeboarding speed (~20 MPH). My driver (wife) has trouble keeping the boat at a constant speed as it planes and drops off repeatedly. I'm looking for something that will get (and keep) the boat on plane at lower speed without too many negatives. Any recommendations?

 

[mailman1]

Re: Smart Tabs trend

I have an 18 ft Winner CC with a 140 OB. The boat weighs in around 2400#. What do you reccomends? Is the chine the flat part then goes to the v? Do you install them on the flat [outboard] part or when it starts to drop?

 

[Jdeagro]

Re: Smart Tabs trend

Jeffjones;<br /><br />Use the ST1290-80. The minimum plane speed should drop to about 15 MPH, but just as important is the bow rise will stay to less than 50% of the current level regardless of speed.<br /><br />Fuel economy will improve, handling and ride will improve, acceleration and top speed will improcve, and porpoising will be eliminated.<br /><br />The single disadvantage will be the size of the wake. Since the boat will be running at a more efficient position and draw less water at the stern, the wake will be reduced. You can trim the motor out more and raise the bow, then slow down a bit. This will help increase the wake size for the wake boarders.

 

[Jdeagro]

Re: Smart Tabs trend

Mailman1;<br /><br />The chine on a traditional boat hull is the 3 to 4" at the far outside edge of the boats which is parallel to the water surface. The bottom of the hull then drops off into the V. There are many different hull designs from brand to brand and even within brands. Try to keep the Tabs as far to the out sides (3 to 4" inside the edge) as possible. The tabs should be an extension of the hull