Trim Tabs

[martynl]

Hello

Does anyone have any experience of fitting trim tabs to a small boat (ie 17ft).

I'm looking into doing this and I've found the rocket flaps to be pretty good technology for the money. See www.rocketflap.com. Has anyone ever installed these or seen them work?

Also, does anyone know if trim tabs will stop my the bow rising when the boat is stationary?

Thanks

Martyn

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[omega2]

Are you trying to wind us up? or what. to get the bow down when stationary put a sack of spuds on the bow.

<hr width=100% size=1>J HAMER

 

[omega2]

Are you trying to wind us up? or what. to get the bow down when stationary put a sack of spuds on the bow.

<hr width=100% size=1>J HAMER

 

[cliff]

Think boats instead of 'puters.......

Actual dialogue of a former WordPerfect customer support employee with a caller:

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Stay put when I hit you!

 

[martynl]

yeah tried that, thought there might be a better way?

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[oldsaltoz]

G'day Martyn,

You should be able to adjust your fore and aft trim with the outboard adjustments to get the level correct, using trim tabs to correct a list under power on a small craft is not economic, as only a small amount of wieght needs to be shifted to correct it.

To get the bow down at rest you have a few options, shit some weight forward (from the stern), or add / build some extra flotation to the transom.

A client of mine who does a lot of diving wanted to fit a larger outboard to his 23 foot centre console cigar boat, this was going to add an extra 50 Kg, the old 150 was to be replaced with a 200 HP.

I extended the bottom and sides of the hull about 600 mm and formed two boxes to allow the outboard leg room to turn; and finished them only inches above the water line so he could get into them easily, rather than climb up the outboard when returning to the boat.

The end result was a longer waterline, better handling, improved performance even with the smaller outboard and getting back on board was very easy.

The extension was made using closed cell foam and epoxy resin.

I hope this helps

Avagoodweekend........



<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.

 

[bruce]

i have a pair on a 13.5 ft with a 75hp on it, comes on plane faster and more level when running and lifts hull little more out of the water. if you don't have a planning hull, may not be much help. westmarine sella an automatic trim tab system by NAUTICUS, Inc called 'smart tabs automatic trim tab system'.

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