NO MO BEGGEN Posted July 12, 2010 Share Posted July 12, 2010 can any one tell me what the purpose of this little fin is in the center of the lower unit. i know it adjusts left and right. when i am on plain at a high speed the boat leans to the left no matter how i adjust the trim and i was wondering if i turn this fin a little to the right if it will level the boat out on the left Link to comment Share on other sites More sharing options...
Rayman96 Posted July 12, 2010 Share Posted July 12, 2010 That fin is used to adjust steering torque.It counteracts the torque applied by the spinning of the prop. Link to comment Share on other sites More sharing options...
GLF Posted July 13, 2010 Share Posted July 13, 2010 Is the dolphin/stinger(whatever its called) on level? Link to comment Share on other sites More sharing options...
anthonyyost Posted July 13, 2010 Share Posted July 13, 2010 My guess would be that you are overloaded on the left side (fuel tank?)If you have trim tabs on the boat you can equalize the offset load. Link to comment Share on other sites More sharing options...
Nailer Posted July 13, 2010 Share Posted July 13, 2010 That fin is used to adjust steering torque.It counteracts the torque applied by the spinning of the prop.Yes that^ It is also the Anod for you lower unit. Link to comment Share on other sites More sharing options...
1mainiac Posted July 13, 2010 Share Posted July 13, 2010 The primary thing the fin does is to stabilize the drive at idle speed if you adjust it you will move the drive position at trolling speed. It is possible but unlikely that it would effect trim at speed unless you are not actually tracking correct at low speed. The first thing I would do is find out if your drive is running true this means make sure the drive is completely straight behind the boat and mark the wheel position. Then take the boat out and run it with the wheel in the marked position. If the boat runs straight the fin is correct. If not adjust the fin to get the boat to track straight once it tracks straight then see if it helps you with trim. Set correctly you should be able to let go of the wheel on calm water and the boat should continue to track. Link to comment Share on other sites More sharing options...
GLF Posted July 13, 2010 Share Posted July 13, 2010 Yes that^ It is also the Anod for you lower unit. It looks like its been painted black. Roger.....You should remove the paint off of it. Link to comment Share on other sites More sharing options...
Paulywood Posted July 13, 2010 Share Posted July 13, 2010 Mike might be on to something with that fin. We had one on our old boat and had some handling issues with it, especially at higher speeds. I would try taking it off and see if your problem goes away. Link to comment Share on other sites More sharing options...
1mainiac Posted July 13, 2010 Share Posted July 13, 2010 What Nick said about the Dolefin could be right however if the boat is designed correctly it should be out of the water on plane any how if the Dolefin or whatever name is on it is still in the water on plane something is wrong either you are over loaded or have your weight in all the wrong places. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now