? on Installing setback plate

[eugene1e]

Im going to be Installing an Outboard setback plate on a inboard to outboard conversion Im doning and have a ? the setback plate is 2 feet and 9 inches long where should the cavition plate be in refrence to the bottom of the boat I was told there was a forumala for this <br /><br /> Thanks

 

[eugene1e]

Re: ? on Installing setback plate

Pushing it Up

 

[JB]

Re: ? on Installing setback plate

The anti-ventilation plate should be even with the bottom of the boat. With the setback you may gain a little by raising it an inch for each 4" of setback from the transom, but this is fine tuning and should involve testing and experimentation.

 

[eugene1e]

Re: ? on Installing setback plate

Here are pic of the set back plate<br /> http://www.shareaproject.com/imageUpload.php?i=3669 <br /> http://www.shareaproject.com/imageUpload.php?i=3670 <br /> http://www.shareaproject.com/imageUpload.php?i=3671 <br /> http://www.shareaproject.com/imageUpload.php?i=3672 <br /> http://www.shareaproject.com/imageUpload.php?i=3673 <br /> http://www.shareaproject.com/imageUpload.php?i=3674 <br /> http://www.shareaproject.com/imageUpload.php?i=3675 <br /> http://www.shareaproject.com/imageUpload.php?i=3676 <br /> http://www.shareaproject.com/imageUpload.php?i=3677 <br /><br />As you can tell its none adjustable so should I just mount it with the anti-ventilation plate even with the bottom are move it higher on the transom the plate is 2 foot 9 inch's<br />with this forumala I can raise it 8.25 inchs from the bottom

 

[surlyjoe]

Re: ? on Installing setback plate

thats a beast of a mount! its gonna do funny things to your wieght distribution moving all that weight from inside the boat that far out the back. have you thought about shortening it?

 

[JB]

Re: ? on Installing setback plate

I take it back. That monstrosity is a bracket, not a setback plate.<br /><br />You will need to experiment with the height of the AV plate. You want the AV plate right at the water surface when the boat is on plane; not out of the water, but right at the surface.<br /><br />Don't mean to offend, but that thing (and the boat after it is mounted) is uuuuuugleeeee.<br /><br />Good luck.

 

[eugene1e]

Re: ? on Installing setback plate

ok I have a 20 ft bayliner cabin cruiser that had an inboard the inboard was taking out now I want to convert it to outboard I would really like to do it with out cuting the hull down and reglassing a splash well becouse I would like to keep the fish box so what would you guys recamend

 

[Purduebarry]

Re: ? on Installing setback plate

OH MY GAUD! Where in the heck did you get this thing, from a barge? You might want to consider some trim tabs while your at it. How big of a boat are you mounting it too?

 

[Purduebarry]

Re: ? on Installing setback plate

Can you have it cut down, it's too long. Check out a setback plate on line. The motor will be wwwaaayy back and all the weight with it. You need to get the motor closer to the boat. This will look like a motor mounted to a swim platform. What are you doing to the transom to support this rig?

 

[eugene1e]

Re: ? on Installing setback plate

Im looking for ideas I really dont want to cut the transom becouse I would lose my fish box

 

[tommays]

Re: ? on Installing setback plate

I usually see those on really big boats (how big a boat are you using) the leverage is going to huge and I would think on a small boat when not moving would really put the motor much to deep in the water to the point of getting water in the cylinders <br /><br />Look at it this way on my 20’ boat 1” of boat position on the trailer makes about 200# difference in tongue weight<br /><br />Tommays

 

[eugene1e]

Re: ? on Installing setback plate

Ok what would you guys suggest I have a 20 ft bayliner liberty that had a inboard in it but now it has nothing.<br />I have a 175 mercury outboard that I want to put on this boat <br />Now I have this setback bracket <br />I have the mean and ability to Cut the transom and reglass a spash plate But would really love to keep the fish box that on the back of the boat What should I do If I cut the brackit dead in half would I still be able to raise my motor for Tailoring <br /><br />Thanks for all your help

 

[Purduebarry]

Re: ? on Installing setback plate

I think it can be done but not with this thing. Maybe you can compromise. Cut the back and build a platform, build in your fishbox. Sticking that motor way back there may be risky and the boat might not handle well. Why take a chance, do all the work and not have it run right. I dunno, I'd go to plan B.

 

[BLU LUNCH]

Re: ? on Installing setback plate

Take cruise over to www.wellcraftv20.com there are a bunch of guys running brackets, there is a wealth of info on brackets posted on the forums..

 

[BLU LUNCH]

Re: ? on Installing setback plate

The conversion you are going to do is common from I/O to O/B. You going to free up space in the boat and add stablity and floatation, they seal-up air tight. Post pictures and check-out the link above those guys will help you out.....

 

[epresutti]

Re: ? on Installing setback plate

eugene1e,<br /><br />This is a link to the gil brackets that I am familiar with. They do a lot of different things to the handling of the boat they also provide floatation.<br /><br /> Gil Brackets <br /><br />Hope this helps.<br /><br />Peace.<br /><br />Ed.