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Author Topic:   Self-Adjusting "Automatic" Trim Tabs
Erik posted 07-13-2001 04:21 PM ET (US)   Profile for Erik  
Does any one have or know someone who has these self adjusting trim tabs? How do they work? Are they effective? Overton's has them in there catalog, infact they used a Boston Whaler for the before and after pictures.-Thanks
jimh posted 07-13-2001 11:37 PM ET (US)     Profile for jimh  Send Email to jimh     
I can't offer any testimonial about how they work, but I did find it curious that the demonstration boat in their advertisements was a Boston Whaler.
B Bear posted 07-18-2001 01:39 AM ET (US)     Profile for B Bear  Send Email to B Bear     
Maybe this might help
I have recently read an article in "Trailer Boats" June 2001, page 42 where they tested "Smart Tabs" (price $120) which are self adjusting (using gas-spring struts) tabs for boats under 25 feet in length. The tabs and actuators are offered in different sizes. The article gave data on before and after and also show the installation process.
If you are interested here is the contact information:
Nautics, Dept. TBM,
4196 Racquet Club Drive
Huntington, CA 92649
800-233-0194

Bear

BW27 posted 07-21-2001 03:11 AM ET (US)     Profile for BW27  Send Email to BW27     
A friend of mine just installed a set of these on an Avon 18 with a Suzuki 85. They work great. They are nice quality and should be great on a BW. A pneumatic cylinder pushes the stainless tab down. As the boat comes up to speed the water pressure pushes against the tab, compressing the cylinder. There is a range of adjustment in pressure based on where the cylinder mounts on the tab. This is adjusted by where in a long slot the cylinder end fitting is mounted on the tab (closer to hinge = less down force on tab). The Avon comes up level on a plane without the bow riding up high. Overall boat ride improved by keeping bow down. I wish I had found these when I still had my Montauk.
where2 posted 07-23-2001 12:18 PM ET (US)     Profile for where2  Send Email to where2     
The DIY Boat magazine had an install of these, and they liked them as well. Check the news stands, I believe it was the current month's (or are they bi-monthly) issue.
Bigshot posted 07-23-2001 04:09 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Why did you want them on a montauk? Just wondering because mine will plane in about 10ft and the bow does whatever the trim button tells it too. I thought baout them but said to myself WHY?
Barnett Childress posted 07-25-2001 02:47 PM ET (US)     Profile for Barnett Childress  Send Email to Barnett Childress     
For those interested in the Nauticus self adjusting trim tabs they have a web page @ www.nauticusinc.com. I just got off the phone with them and they claim the tabs can also correct a listing problem.
Barnett
Erik posted 07-25-2001 09:47 PM ET (US)     Profile for Erik    
Well, I think these tabs are only for some boats not all. I can imagine that the tabs constantly has a downward push on the water under the boat, so what happens when you want to trim your bow up? Wouldnt that be a stuggle, maybe a little of the topend speed? I have no dought that it would correct listing from propeller torque, you can see how each is adjusted from the pictures. I wonder if you can adjust the tabs to stop when they come to the same level as the bottom of the boat. Then I would consider buying them.-Erik

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