hydro shield?

[badhabit]

Terry you hit the nail on the head on both accounts. the problem with some one moving around does not bother me I get it is a deep v boat and you are going to have that. the problem you described with the hydrosport is what drives me crazy.

[Terry England]

Originally Posted by badhabit

Terry you hit the nail on the head on both accounts.

I act like a goof on here most the time, mess'in with Minh and his gay sports cars but actually I'm old and have a lot of scar tissue running these boats. They do great the way they were originally designed, but when you start "improving them" by changing things around all bets are off on the preformance category. Carl Moesly had it figured out.
I always wondered if those big long Kiekaefer K-planes and a 4 blade stern lifting
prop would help on the outboard 25's - then maybe 400# of concrete in the anchor locker. We do know how to spend your money here. She'll ride better on the way home if you fill the cabin walkway with swordfish. Git to work and circle back with some data we can use.

[Bushwacker]

Originally Posted by badhabit

. . . on a tuna run we will put about 300lbs of ice in the cuddy which makes it slice the seas even better but it still wants to lay over at the slightest turn. if you wanted to would you be able to use auto pilot on nice days? we don't have one but I could not see it working on this boat. I know you guys say this is a drivers boat and I do know what that means. I have had boats you have had to work at in rough seas but you have to do that with this one in calm seas.

As Terry E. mentioned, Connor has his 25 dialed in very well with the original I/O configuration and it seems to handle pretty well. You might try using Capt. Terry's CG calculation method to calculate how much the lateral CG has been shifted by the change from I/O to OB configuration. You could then use the same procedure to calculate how much ballast you'd have to add up in the bow to get the CG back to it's design location. You could also use that process to figure out CG location with the 300 lbs of ice in the cuddy and see how that compares to the design CG location.

Carl Moesly designed this boat to have a ballast tank up in the bow using a rubber bladder tank (so it could be filled and emptied quickly w/o needing a vent hose), similar to what he used in his race boats, but he sold the company to Potter before he ever built one, and Potter evidently didn't understand the ballast tank, so left it out. So maybe a rubber bladder ballast tank up in the bow would help the handling.

I wonder if your problem is related to the vertical CG location. As Terry E. mentioned, that lump of Chevy iron down low in the bilge in the original design probably makes the boat more stable in roll than it would be with an outboard powerhead mounted up at 25-30" above the keel. If a marinized SB Chevy weighs ~900 lbs with manifolds & risers, at about 5.9 lbs/gal for gasoline, you'd need something like a 150 gallon gas tank down where the engine was to match the original configuration!

[Old'sCool]

If we're spending your $$$$$ then I say get SesKeeper��

https://www.seakeeper.com/

[uncleboo]

Originally Posted by Old'sCool

If we're spending your $$$$$ then I say get SesKeeper��

https://www.seakeeper.com/

Now we're talking!

[cdavisdb]

Hmmm. This sounds like a vertical CG issue, probably related to using an outboard. My I/O doesn't act like that at all. The outboard will have a high vertical CG. The 25 Seafari has a fair amount of cabin weight up high anyway. The 25 Hydosport is the same thing, relative lot of cabin and hull weight high plus a very deep, slab sided deepV.

You would think that a full load of ice and fuel would pretty much counter that problem. Does the boat act better or worse when its light? Some CG calculation(see above) seems like a good idea.

[cdavisdb]

How high off the deck is all that ice?? Could that be contributing to the problem?

[Capt.Nate]

You might want to work the motor trim, but it sounds like something may be off, not sure what though. Mine definitely leans on tight turns but not on adjusting turns.

Its funny when i go and drive someone elses boat it feels like it takes forever to turn because they dont have the lean. You get used to what you helm.

[cdavisdb]

Capt Nate, yours is a bracketed outboard with a fairly heavy hard top, much higer CG than mine, yet it doesn't do what bad habit is describing. What's the difference? I was thinking vertical CG, but maybe its something else.

[cdavisdb]

Just a thought. The 25, being so sharp, is quite sensitive to the amount of weight you put in it. My mpg and speed/rpms at 7 lbs vacumn go way down when I'm loaded heavy vs a light load. Maybe it can be sensitive to weight in other ways. Sounds like your canyon runs are a heavy load. Could this be related to the handling issue? Again, does it do it just as bad with a light load?