2006 Sea Ray 240 Da Instability

[CAPNJOHN]

I own a new 2006 240 Sundancer with the Bravo 3 outdrive. I have owned many boats, but this one is very instable. At speed, the boat will list to either port or starboard, and the trim tabs have to be constantly tweaked to keep the boat level- Without constant attention, the boat will tip to one side and the severity of the list makes it feel as though the boat will tip over.

The only way to stop the tipping is to back the boat down to where is it barely on plane.

This condition is much worse as the gas tank is emptied through normal use- below half a tank, it is much worse.

I purchased a Stingray Hydrofoil piece for the lower unit, but it did not help to correct the problem.

This past weekend on Lake Michigan, in following 3-5' seas, it was a nightmare with every larger swell seeming to tip the boat.

I am interested in anyone's suggestions as to how they have resolved the problem....

Thanks

 

[tashasdaddy]

Re: 2006 Sea Ray 240 Da Instability

well you are not suppose to use the hydro foil with tabs. other than that, is there anything load wise you can shift around.

 

[odyssey V]

Re: 2006 Sea Ray 240 Da Instability

As far as shifting load around would it be better to shift weight forward?

 

[jaxnjil]

Re: 2006 Sea Ray 240 Da Instability

you need to check the spacer in your drive where the lift cylinder rod goes thrue the drive. for the b3 this spacer should be to the front of the drive. on the b1 and b2 it goes on the back side of the rod

 

[rbh]

Re: 2006 Sea Ray 240 Da Instability

our 270 da has trim tabs as well, never use them, they sit horizontal to the rest of the boat we just make sure the legs are all the way down and it planes out in 10 seconds at about 3000 rpm
You are not dragging anything? corner of swimgrid? as that could be a reason for the darting.
rob

 

[QC]

Re: 2006 Sea Ray 240 Da Instability

Two year old thread guys . . . He's probably gone by now as he never posted again

 

[jaxnjil]

Re: 2006 Sea Ray 240 Da Instability

also sound like your not trimming drive out far enough and its driving the bow down.
make sure your trim tabs are both working befor you start.
try starting with your trim tabs all the way up( that b3 will have enough bite to get on plane with out them) and trim out the drive for the best speed at the rpm your running.
use only one tab at a time to keep level and make sure you dont have both tabs down at once so there not fighting each other