Smart Tab installation for Joe Homeowner

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
I have a 19' Stingray I/O with the 4.3L V6 which I believe would really benefit from Smart Tabs but I am scared to death of drilling holes in my nice clean transom. I know the web page states that it is very easy and looking at the PDF installation file it looks simple BUT...I've got the jitters. Maybe I should just pay my mechanic to install them. What do you think guys?<br /><br />Also, I'm guessing that I would need the ST1290-80?<br /><br />Thanks,<br />Brian
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Smart Tab installation for Joe Homeowner

Drilling the transom is no big deal as long as you seal the holes. Knowing where to drill the holes is a huge deal. <br /><br />The instructions are very clear on location. Most folks panic and mount them lower which isnt right. Listen to John, he'll be along shortly.
 

Rudderman

Petty Officer 1st Class
Joined
Jan 14, 2004
Messages
283
Re: Smart Tab installation for Joe Homeowner

Measure twice and drill once! Also if you use a countersink bit to expand the hole after you drill it out to the final size. This stops the fibreglass from splintering when you drive in the screws.
 

rwidman

Lieutenant
Joined
May 27, 2004
Messages
1,396
Re: Smart Tab installation for Joe Homeowner

1. You can contact John at Nauticus and he will tell you what size you need.<br /><br />2. I installed a set on my previous boat (also a Stingray but 18'). Just follow the directions. As rudderman said, once you drill the holes you should use a countersink bit to chamfer the gelcoat so it doesn't crack or splinter. Don't drill the holes all the way through the transom, drill only as deep as the length of the screws.<br /> <br />Hint: Once you have the holes drilled it's easier to drive the screws in without the tabs (this cuts the threads), then back the screws out, put the sealant (3M 4200 or equivalent) in the holes and under the tab mounting plates, and then reinstall the screws with the tabs in place.
 

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
Re: Smart Tab installation for Joe Homeowner

Thanks Ron, I'll give it a go. My biggest problem is that my boat will porpoise a lot in anything but totally calm water. From what I have read the Smart Tabs will eliminate this. Did you have this problem also?
 

Jdeagro

iboats.com Partner
Joined
Jul 30, 2003
Messages
1,682
Re: Smart Tab installation for Joe Homeowner

BRG25;<br /><br />You have some good info from others. <br /><br />First do not use the ST1290-80 as the 80 Lb. actuators will be too much for your boat. Use the ST1290-60. Not to worry because if I am wrong we will exchange the actuators at no charge. Swapping them should take about 3 minutes if needed.<br /><br />As for drilling holes, keep in mind that these holes are going to be filled with two things, a screw and sealant. <br /><br />We recommend a 3/16" drill bit which if it cuts small will make the hole to tight in fiberglass. Wood and aluminum will give, fiberglass will not. If the screw goes in to hard do not force it, simply run the drill in the hole again to open it up a bit. Or use a 7/32" bit. <br /><br />The installation is better done by the owner since you will take the time to read the directions and understand the system, where the mechanic (if they are not one of our dealers) will just want to get them on the boat and you out the door. Sorry if I have offended any dealers. <br /><br />Assemble the tabs while sitting down at the kitchen table ( make sure they wife is out shopping, and you don't scratch the table). Assemble every thing so that the only thing missing is the boat, and the mounting screws. <br /><br />Now go to the boat, position the plate with hinge attached against the boat in the location you desire (see the picture in the manual or on our web site for other similar installations - locate them as far out to each side as is practical for better stability). Mark the hole locations and now drill the hinge / plate holes.<br /><br />Use either the foam Marine Sealant strips provided to seal the holes and / or 3M 4200 or 5200 sealant. Side note, if our sealant did not work well I would not supply it. If the boat is aluminum it should always be used. <br /><br />Attach the plate. Now use the 25 degree template provided to get the correct position of the top (transom) bracket. The bracket should be attached to the actuator and the other end of the actuator should be attached to the plate bracket (remember I said assemble everything!) Mark and drill these two hole, use the sealant, and attach the bracket. Your done! Do the same on the other side, and go run the boat. <br /><br />The porpoising should be eliminated, if not increase the pressure (according to the instructions) a little and run the boat again.<br /><br />You should pick up 2 to 4 MPH in top speed when the pressure is adjusted correctly.<br /><br />NEVER USE ANY OTHER PLANING DEVICE IN ADDITION TO Smart Tabs. (i.e.: Hydrofoils)
 

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
Re: Smart Tab installation for Joe Homeowner

John, this picture (from your website) is almost identical to my transom.<br /><br />
Stingray.jpg
<br /><br />Are the trim plate tabs far enough apart in this installation? I noticed in some of the other installation pictures that the plates are mounted further apart. How much does the distance affect stability?<br /><br /><br />Thanks,<br />Brian
 

Jdeagro

iboats.com Partner
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Jul 30, 2003
Messages
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Re: Smart Tab installation for Joe Homeowner

Given the restriction thats going to be as good as you can get. This customer has been very happy.
 

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
Re: Smart Tab installation for Joe Homeowner

Great, thank you.
 

swist

Senior Chief Petty Officer
Joined
Jul 1, 2004
Messages
678
Re: Smart Tab installation for Joe Homeowner

Hi John,<br />While we are on the subject, I read the installation manual and had a good laugh over the string-rubber-band-paper-clip-paper "trim indicator" used to set up the pressure. You sure you didn't leave out the chewing gum?<br /><br />Seriously, I assume that rig is for setting it up solo, and that if you have a second person who can observe the tabs and repoprt what they are doing, you don't need to rig the "indicator". Yes/No?
 

Jdeagro

iboats.com Partner
Joined
Jul 30, 2003
Messages
1,682
Re: Smart Tab installation for Joe Homeowner

Swist;<br /><br />When I first started this company seven years ago, we did not have the exposure to the thousands of boats we have now. Determining when the tabs were adjusted correctly was a judgment that they should not be deployed once the boat was on plane. If you have one person in the back of the boat to watch the tabs rotate up, the balance could be a bit off.<br /><br />Some of the other trim tabs companies use a mechanical device (cables) to register the plate position on a dash mounted indicator. The string trick is nothing more than a temporary (throw away) mechanical indicator, just about everyone will have the string and rubber bands. <br /><br />Anyway, we now simply give people two criteria to work with. 1) the boat should run as fast or a few MPH faster with the tabs than it did without them. If not reduce the pressure by resetting the actuator position lower on the plate bracket. 2) If the boat porpoises without the tabs, and all of the porpoising has not been eliminated, then increase the pressure. It is all about creating the correct balance for the boat.<br /><br />I still get ribbed about the string, and probably should delete it from the book, but us old <br />F-rts have a tendency to "save everything". Actually my x wife even retains water. Bad joke!
 

rwidman

Lieutenant
Joined
May 27, 2004
Messages
1,396
Re: Smart Tab installation for Joe Homeowner

Originally posted by BRG25:<br /> Thanks Ron, I'll give it a go. My biggest problem is that my boat will porpoise a lot in anything but totally calm water. From what I have read the Smart Tabs will eliminate this. Did you have this problem also?
That probably has more to do with your drive trim. You can trim the drive out farther with the tabs installed without porpoising. The main reason I installed them was to get on plane faster (the Stingray has a lot of bow rise), maintain plane at alower speed, and reduce bow wander at no-wake speeds.<br /><br />BTW: I installed mine by myself, it can be done. It would have been easier to have one person hold the tabs in place while the other marks the holes.
 

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
Re: Smart Tab installation for Joe Homeowner

2 people....got it Ron.
 
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