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Old 07-16-2010, 11:50 PM
peterb peterb is offline
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Join Date: Dec 2004
Location: Montclair, Sandy Hook & Highbar Harbor, NJ
Posts: 1,148
Default Re: Transom Bracket - twin outboards

Been there & done that. For years I ran a 1972 23' with twin 200 HP OX66's (see below picture). Also, it had an enclosed transom and a full flotation bracket.

I have the following questions for you:

Does the boat sit stern heavy in the water?

Do you have any balast materials up front?

What type of props are you using?

What kind of trim tabs are you using, and are you sure that they are properly working?

Have you checked your bracket to see if she has any water leaking into her?


Here is what I did with my set-up to get her dialed in.

I put 200 pounds of lead up front in the bow hatch

I had the engines mounted in the mid level setting on the bracket.

When the engines were at the highest level setting my 3 blade 19 pitch & 15.25 sws props were capable of coming out the water. When I put on 21 x 14, 7/8 props they did not come out of the water anymore.

SeaCraft's with brackets and alot of engine weight need alot of trim tab. I had 16 x 12 Bennett sportman trim tabs. I was not happy with their performance initially. I pulled the boat of the water and saw that the tabs were not working that well. It ended up being that I was a little low in transmission fluid. When I filled the system up, I had far more responsive tabs and a better handling boat.

I eventually went to 4 blade power tech props. They gave me decent stern life and improved the boat handling. My speed at WOT went down from 56 MPH to about 47 MPH, but I was happy with the trade-off.

If you have any specific questions, please let me know.

Regards,

Peter
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