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FSH 252/255 Trim Tab Project

Zackdadams

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I've decided to add powered trim tabs to my FSH 252.
The following is a tutorial from my project.

Parts:
Tabs: Lectrotab Model TA9x12 - Aluminum Alloy

Pistons: Lectrotab Model S-BK-16 - Short Trim Tab Actuator - 23' Cable

Controller: Lectrotab ALC-1 - Automatic Leveling Control - Single Actuator

20230805_075319 (Custom).jpg 20230805_135255 (Custom).jpg

I researched a few brands, and ultimately chose Lectrotab.
I really liked their product selection, and controllers.

I originally ordered multiple different size tabs, but ended up sending them all back.
The 9x12 tabs fit the best for me, and didn't interfere with the ratchet straps.
These tabs also fit perfectly under the lighting.

Initially I also ordered the standard Lectrotab pistons, but they were too long.

I went with the automatic controller, which is manual also.
Alternatively, you can use the manual controller.

Part 1: The Trim Tabs

Before I began drilling holes, I removed the rear cup holders, and rear access panel.
Using an endoscope, I checked all areas where the tabs, pistons, wiring, etc will mount.

I was satisfied it would be a clean, safe install.
The only thing in the area is the underwater lighting wire.

20230805_104002 (Custom).jpg 20230805_104026 (Custom).jpg


Step 1: Assemble the Tabs
The assembly is very straight forward.
You'll want to remove and flip the piston brackets, as we'll be mounting them under the boat, rather than on the transom.
Using blunt object (I used a drill extension) knock out the center pin.
Flip the bracket, and reinstall the pin.

Attach the piston to the tab, and use Loctite on the bolts.

20230805_081059 (Custom).jpg 20230805_084201 (Custom).jpg

Step 2: Mounting the Tabs
To begin, I held one tab in place, and used a 4' level under the boat to check for clearance.
I decided on a good location for the tab and piston, that didn't interfere with lighting, ratchets, etc.

Mask off the area using painters tape.
Measure from the bottom outer edge over 7".
Using a torpedo level, draw a straight line upwards.
This will be the corner of the trim tab.
These particular tabs have a removable mounting plate.

Mark the center hole, and drill a small pilot hole, and countersink, to ensure the gel coat won't split.
Install the first screw to hold the bracket in place, then drill the remaining pilot holes.
Remove the plate, and countersink all holes.
Install all screws to ensure a good fit.

20230805_105510 (Custom).jpg 20230805_110245 (Custom).jpg

Once you like it, remove all the screws and painters tape.
Wipe the area down with isopropyl, and prepare for 5200 adhesive.
Shoot 5200 in each screw hole, and apply a decent amount behind the plate.
You'll want it to ooze out completely around the plate, to ensure a water tight seal.

Reattach the mounting plate to the tab, and reinstall the screws.
Afterwards, wipe the excess 5200 away with Simple Green or similar.

20230805_111349 (Custom).jpg 20230805_112942 (Custom).jpg

Step 3: Mounting the Pistons

Once the tabs are attached, hold a 4' level under the boat and the tab.
The idea is for the tabs to be slightly above the bottom when not deployed.
Apply painters tape to the general area the piston will mount.

Holding the piston, tab, and level in place, I decided on a location, 1/8" above the 4' level.
I drew a line around the piston mount, and removed the mounting bracket.

20230805_113752 (Custom).jpg 20230805_115008 (Custom).jpg

Repeating the same steps as the trim tab bracket, I drilled, countersunk, and attached the piston bracket.
Afterwards, drill the center hole in the bracket for the piston wire.
Finally, remove the bracket and tape.
Run the piston wire up through bracket, and then the hole.

20230805_115515 (Custom).jpg 20230805_120219 (Custom).jpg

Once the entire length of wire is fed into the hole, prepare for 5200.
Shoot 5200 into each hole, and a generous amount under the bracket.
Hold the piston up near the area, and also apply 5200 around the wire.
Finally reattach the bracket to the hull, and reassemble the piston.
Clean the excess 5200.

20230805_121507 (Custom).jpg 20230805_120656 (Custom).jpg

Now on to wiring!
 
Last edited:

Zackdadams

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Part 2: The Controller & Wiring

Step 1: Piston Wiring

Now that you have the pistons mounted, reach up under the rear access panel, and pull the wire out.
Next feed both wires through to the engine compartment, using one of the existing penetrations.
Add a piece of split-tubing to protect the wires as they pass through for protection from chafing.
Add a few zip-ties to keep it neat and clean.

20230806_100913 (Custom).jpg 20230806_101019 (Custom).jpg

Now moving to the engine compartment, stretch out both wires, and add split-tubing to the entire length.
Attach a Glow-Rod or something similar to the end, and feed it under the floor.
You'll see a spot for this near the batteries.
Move to the center console room, and remove the bottom access panels.
Pull the wires out, and reassemble the bottom white plastic access panels.
Finally zip-tie the wiring in the engine compartment.

20230806_103726 (Custom).jpg 20230806_104306 (Custom).jpg

Step 2: The Controller
The controller I decided to go with the Lectrotab ALC-1, which is automatic and manual.
Lectrotab's manual only controller is the MLC-1, and is the exact same size.

20230803_165549 (Custom).jpg 20230803_172446 (Custom).jpg

The ALC-1 has a built-in GPS and other sensors, so it needs to be mounted in the exact center of the console.
I would recommend you also mount the MLC-1 here as well, in case you upgrade in the future.
Measure and find the center of the console.
In my case it was 16-11/16th" from the upright posts.
Tape the supplied template down, and check for clearance under the console.

20230806_084228 (Custom).jpg 20230806_084617 (Custom).jpg

Using a specified 2" Hole saw, cut out the opening.
Make sure to run the hole saw in reverse to score the gelcoat, then switch to forward to finish the hole.
Next drill the two small bolt holes.
Afterwards, remove the template, tape, and check for fit.
Mine was a little snug, so I drilled the bolt holes slightly bigger.

20230806_092755 (Custom).jpg 20230806_092849 (Custom).jpg

Part 3: Final Wiring
The controller calls for #14GA power wire. I personally used #12GA.
Previously I installed a fuse panel, so this is where i'll be feeding the power from.
You can check out my other tutorials for that installation.

Make sure to add split-tubing to all your power wires for chafing protection.
Run your power wires, piston wires, and optional ignition wire up through the controller opening.
The ALC-1 or MLC-1 will automatically retract if the ignition or switch is turned off.
I'll be attaching this yellow wire to Accessory #2 switch on the console.

20230806_111957 (Custom).jpg 20230806_111848 (Custom).jpg

Strip and wire the back of your controller, adding dielectric grease for protection afterwards.
Use the provided wiring diagram for wire locations.
Reinstall the controller, and attach the wingnuts underneath.

20230806_113536 (Custom).jpg 20230806_112813 (Custom).jpg

Connect up your Red/Black power wires, making sure to use a 20-AMP fuse, or 20-AMP in-line fuse.
Attach the optional yellow ignition wire to the back of ACC 2 switch.
Yamaha kindly provided a red pigtail, with a female spade connector on the back of these switches.
Zip-tip everything, to finalize the wiring.

20230806_115847 (Custom).jpg 20230806_115816 (Custom).jpg

Step 4: Programming & Testing
Once you are happy with the wiring, turn on your batteries, and keys.
If you used the optional yellow ignition wiring, also turn on ACC-2 switch.
The ALC-1 Controller should turn on and start flashing.
Hold Bow-Up and Bow-Down for 12 seconds to calibrate the controller.

20230806_120434 (Custom).jpg 20230806_120133 (Custom).jpg

Finally after the calibration, follow the instruction to test for trim tab movement.
And we're done!
Here is a side by side comparison of the tabs retracted, and fully deployed.
I did a measurement, and it's around 20 degrees max, which is what is recommended.
Flipping the ACC-2 switch, will cause the tabs to automatically retract.

20230806_131406 (Custom).jpg 20230806_121548 (Custom).jpg
 

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Last edited:

jcyamahariders wife

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@Zackdadams We love our Lecrotabs on our 242X. Don't know how we survived without them all these years ! I can sit up in the bow on choppy days without filling beat to death.

You will find you will want Cobras for added steering for high speeds. Those TV's won't help when you are on plane. Our buddy has our same setup without any steering fins and he notices having a hard time steering at high speeds with the tabs deployed at certain percentages.
 

Zackdadams

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Last edited:

EastonRob

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Fantastic write-up as always, Zack. Thanks for all the detail. Two (probably stupid) questions for anyone that can answer:

1. I assume the install is the same, or basically the same, for the FSH 255. Is that correct or are there differences with 252 that would require different approach?

2. We spend a fair amount of time wake surfing with our daughter. We use a ballast bag and a wave shaper from jet boat pilot. Anybody have a sense if these would impact wave shaping capabilities? I imagine it might give you some additional control, by allowing you to bury one side of the boat more, but I'm curious if anyone has experience with this.
 

Zackdadams

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Should be an identical install on the FSH 255.

I'm not sure about your 2nd question.
Planning to do some open water testing soon.
Maybe @JetBoatPilot knows.
 

Southside

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Thanks for the write up, I just installed these and it was very helpful. A couple of additional tips:

1. When i recieved my actuators they were very difficult to rotate to be flat against the swim deck. Taking the two wires to a 12 Volt battery i was able to extend and fully retract by switching polarity. Moving these just a little makes them much easier to rotate.

2. When trying to align the tab above the plane of the hull i cut a 4x4 post on a 18.5 degree angle, putting it under the end of the tab. Moving the post slightly left to right i was able to make fine adjustments on the offset before marking the mounting screws.

Thanks again!
 

BigAbe75

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Should be an identical install on the FSH 255.

I'm not sure about your 2nd question.
Planning to do some open water testing soon.
Maybe @JetBoatPilot knows.
He would be better off asking @jcyamahariders wife as they surf - a lot and have the tabs installed as previously mentioned. I’m not sure I’ve ever seen Will mention installing trim tabs, though I’m not as actively following content as I used to.
 

Southside

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Here are a few pics. This is on a new to me 2019 AR240 which i have had for about 4 weeks. I'm very much looking forward to taking it for a test ride once the 5200 sets! I did the riser upgrade and scupper replacement while I had the tray out from information i read on other posts. This fourm is a great resource, thanks again!
 

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MilesPrower

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Thanks for the write up, I just installed these and it was very helpful. A couple of additional tips:

1. When i recieved my actuators they were very difficult to rotate to be flat against the swim deck. Taking the two wires to a 12 Volt battery i was able to extend and fully retract by switching polarity. Moving these just a little makes them much easier to rotate.

2. When trying to align the tab above the plane of the hull i cut a 4x4 post on a 18.5 degree angle, putting it under the end of the tab. Moving the post slightly left to right i was able to make fine adjustments on the offset before marking the mounting screws.

Thanks again!
Great ideas!
 

Zackdadams

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Only used it once since install.
I work too much.

But it made a big difference.
Kept the nose down in 3ft seas.
No more up and down.

It's amazing how much it moves your boat.
Definitely a learning curve though.
I'll do an extensive review soon.
 

FSH 210 Sport

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Only used it once since install.
I work too much.

But it made a big difference.
Kept the nose down in 3ft seas.
No more up and down.

It's amazing how much it moves your boat.
Definitely a learning curve though.
I'll do an extensive review soon.
Looking forward to the extensive test and write up!

Were you in head seas or following on this preliminary test?
 

Bjensen24

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Zach I’m probably going to copy you again on this one. Can you confirm if the 9” is width or depth. I assume they are 9” wide and 12” deep but when I called essenbay said they are 12” wide and 9” deep so just want to make sure before I order. And thank you again for an amazing job!
 

Zackdadams

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They called me also to check.
Lectrotab Model TA9x12 is the one I installed.
9" is the depth, 12" is the width across the transom.

Here's the manufacturer website explaining the dimensions.
 
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Noles187

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As a person with zero electrical inclinations where should I go in the Clearwater/Tampa/St Pete area to have these installed once I order them?
 
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