Trim Tab MODS 390/40DA and others

see ray

Active Member
Sep 28, 2008
506
Cleveland OH / LakeSide yacht club
Boat Info
NEW 05-360 DA ,
(SOLD) 06 40DA HARD TOP. 8.1L HO 420 hp L
Previous boat 05 340 DA 8.1L 370 hp
Engines
8.1L HO 420hp
V Drives
90C5AD77-1F83-4497-AF5A-9A72B1D1FF61.jpeg
Has anybody tried this modification to the Trim Tabs there’s an extensive discussion about it and the classic 85 through 91 390 forum, I was curious if anybody tried these on the newer boats or a bigger boats and what were the results if any
 

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I put drop fins on my 48DA, and only use half the tab that I used to. Great addition.
 
I put drop fins on my 48DA, and only use half the tab that I used to. Great addition.

cool ,
BY THE WAY NICE BOAT !!
I have the 06-40 da , My boat comes up on plane fairly quickly but I have to run it up to 3800 RPM so the bow comes down some , then I use the tabs to bring it down a little more, I was toggling between adding more weight. Like all chain anchor line, but more weight means more fuel Use , Everything I’ve read so far about the fins sounds like that could be a cheap fix/assistance with the running attitude thanks for the reply, I guess 30 bucks isn’t going to make or break anyone and if it does assist and work well it’s a plus I don’t believe it all hamper anything. Just looking for more testimonials
 
This is us, 38 Sabre. The trim fence is a new old factory upgrade that the po neglected to do, but Sabre was willing to cover even 8 years late. The tabs are ok, but we constantly at the max deployed position and left little adjustment.
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View attachment 103562 Has anybody tried this modification to the Trim Tabs there’s an extensive discussion about it and the classic 85 through 91 390 forum, I was curious if anybody tried these on the newer boats or a bigger boats and what were the results if any

Aren’t Mainship Trawlers displacement hulls? Aren’t Tabs only going to provide lateral roll stability?
 

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