Boat stability issues

   Hello........I have a 474 stacer with 40 horsepower johnson.......my problem is that when im going at any sort of speed it always wants to lean to one side.......my load is evenly distributed and sits level when not underway......only happens at speed.......what could be causing this???.........


Posts: 4583

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Motor Sitting central on the

Tue, 2012-04-17 18:39

Motor Sitting central on the transom?

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Date Joined: 14/12/09

Always the same lean?

Tue, 2012-04-17 18:46

 Is it leaning into the wind? I have this issue sometimes. But I haveput it down to the canopy. And I have trim tabs, so they fix the problem...

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Posts: 109

Date Joined: 24/01/12

   Yeah it always leans to

Tue, 2012-04-17 19:13

   Yeah it always leans to right side........and yeah dodgy the motor is central on the transom.......could the little trim tab on the motor have anything to do with it??

Greg Jones's picture

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Date Joined: 31/12/08

I used to have the same

Tue, 2012-04-17 20:41

I used to have the same problem with a centre console that had a Merc 75 HP on the back. It was nearly impossible to get it on the plane, and then it would lean to starboard....until one day I fiddled with "that little trim tab" and it solved both problems. It was just a tiny movemnet in the end, so maybe worth a try!

 

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 Yes mate it will have a lot

Tue, 2012-04-17 19:55

 Yes mate it will have a lot to do with it.

solly's picture

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spot on

Tue, 2012-04-17 21:23

 yup just adjust the trim abit.might increase your top end as well.

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Faulkner Family's picture

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Date Joined: 11/03/08

could be the little keel

Wed, 2012-04-18 00:50

could be the little keel shaped anode just above the prop. give it a tweek and see how that goes. have heard of this before and that suggestion did the trick.

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Meteorite's picture

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Date Joined: 30/12/10

Try raising the outboard up a

Wed, 2012-04-18 04:26

Try raising the outboard up a bit higher ? Tilt the leg up a little more and see if it still does it , does it have electric tilt ?

carnarvonite's picture

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Anode / trim tab

Wed, 2012-04-18 08:31

Adjust the anode / trim tab just above your prop, this will solve your problem

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Date Joined: 17/04/12

 make sure you hit it with

Wed, 2012-04-18 12:52

 make sure you hit it with penetrene first before adjusting cause it really sucks if the bolt snaps there generally is a few notches on the annode itself line it up with tthe one on the leg and get the tab as straight as possible running bow to stern

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Date Joined: 18/01/12

anode/tab

Wed, 2012-04-18 13:43

purpose of the anode/tab is firstly as protection via sacrificial anode, then by off setting it to balance out the torque bias of the engine while cruising. Most obviouse by letting go of the wheel while travelling and seeing if it trys to move off course.

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If you have a spare 48 hours,

Sat, 2012-04-21 16:44

If you have a spare 48 hours, there is some interesting debate on your problem here:

http://www.fishnet.com.au/forums/viewtopic.php?t=107526&f=8