26 regulator classic W/ F225's 2005 - The Hull Truth

rarebreed · 01-14-2009, 11:20 AM

Andy,
I spent the better part of last spring dealing with ken at propgods to get better performance out of my boat and more sternlift. We swapped SWSII M21 props with 19P merc rev 4's and it has improved everything across the board, however i would still like a little more stern lift. So I asked him about swapping lower units after hearing of increases in speed and sternlift. I am referring to having the props spin inward toward each other rather than the standard outward rotation. He could not give me a definitive answer and referred me to you. I have also heard that swapping L/U can cause decreased handling and docking control. Would you recommend this for my boat or would wedges be the best option.
Thank you,
Maclin

SIM · 01-14-2009, 02:05 PM

Rare,

I have heard pro and cons on the same thing, but with the local customers we have I have never had to try that to tweak an application like that.

As far as handling around the dock, I don't see how one would be better then the other.

Joey at Sundance Marine deals with more high perf applications like thatthen I do. Maybe he can chime in on that subject.

Andy

sundancekid · 01-16-2009, 08:39 AM

Spinning the motors inward definately gets you some stern lift, how much is hard to gauge because every hull responds differently, but it certainly helps. The negative is decreased handling around the dock. If you were to use the engines to spin the bow into the wind, you would have a tough time doing that. The Rev 4 props certainly help bite the water at docking speeds, however. If you tend to use the wheel more than the engines to spin the boat, then you won't notice much difference. I think wedges are also something that should be looked at, they do wonders for many boats and the cost to install wouldn't be that astronomical, a couple hours labor and the wedges themselves only cost about $40 a pair. If you do install wedges, then you can raise the engines the final hole as the increase in negative trim and additional setback will allow for this.

SIM · 01-16-2009, 09:10 AM

Thanks for responding Joey........appreciate that. [img]../images/emoticons/thumbsup.gif[/img]

Andy

rarebreed · 01-16-2009, 10:14 AM

Thanks to both of ya'll and Ken.
Maclin