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Author Topic:   trim tabs
dboy posted 04-08-2003 07:06 AM ET (US)   Profile for dboy   Send Email to dboy  
I know this is not a new topic but I searched the forum and did not find the specific info I wanted. I have a 97 outrage 21 with a 225 Johnson and am looking into trim tabs for it. Will they allow the boat to plane at a slower speed? As I slow to comfortable speeds in rough water, I sink back off plane and plow along. Also when cruising in rough water I am forced to trim my engine down and therefore it labors and uses too much fuel. Are there any reasons not to have them such as in the way loading a trailer, turbulence for the sonar/fishfinder, obsruction in shallow water. I used this boat briefly last season because I only obtained it in Sept but we had a blast chasing school bluefin in the Northeast. I seemed to fill the bill like I had hoped but I want to make it a little more usable and efficient. Thanks
kingfish posted 04-08-2003 08:49 AM ET (US)     Profile for kingfish  Send Email to kingfish     
The answer to all your questions about reasons *not* to install trim tabs, is that none of those things are issues. If all you want to do is plane at slower speeds, you might be wise to install Doelfins or something like them on your motor first, to see if that fixes what you want fixed. Much easier and less costly and might do the trick. If they don't do enough, you're out less than $50.


JohnJ80 posted 04-18-2003 07:26 PM ET (US)     Profile for JohnJ80  Send Email to JohnJ80     
I would second the advice about adding the fin on the motor first. Trim tabs are a big deal and potentially a big pain too.

I had alot of discussion with Whaler about powering issues on my boat and the reccommened that I talk to Grand Island Marine (321-452-8126) for fins. They have a patented deal that works on a bit of a different principle than the Doel fin. They have tried them in many cases and found them to work very well.

The other benefit is that they don't require drilled holes in the motor. They have a clamping arrangement specific to the motor you have that allows the fin to be quickly mounted without drilling.

The claim for their product is that you get a very substantial drop in RPM to maintain a plane and a lower speed too. I would give them a call about this before I would do the tabs. Just looking in catalogs, you would spend more than $500 just for the trim tab hardware installation would have to add another $200 or so. The GI fin is $169.


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