Message 10 of 10
Posted by member Peterboo on Wednesday 9 November 2011

in a following sea lift , trim the engine up and it helps with the broaching from side to side

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Message 8 of 10
Posted by member Greg Harvey on Saturday 6 August 2011

PH 17. Hi, I've had a PH 17 for a number of years. It is fitted with rigid 'trim tabs' (not sure if they have another name - they are cast aluminum screwed to the transom) One has become dislodged. As both are quite pitted with corrosion I am thinking of removing both and not replacing, but would like to know if they are standard and the likely consequence? Boat is powered by 40 hp 2 stroke Mariner. Any advice? Many thanks. Greg

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Message 6 of 10
Posted by member Mike Williams on Saturday 9 July 2011

I had the same problem re wiper blades. Mine had ben changed so I had to go to a motor shop and match them. Hardy Marine are extremely helpful, so I would give them a call first. Also try starting a separate thread on this forum. I have always found people (owners) are very helpful. Hope your weather is better up there than it is down here ! Mike

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Message 4 of 10
Posted by member Mike Williams on Tuesday 5 July 2011

Cruicky, We have a Hardy 25 and our trim tabs both operate in the same direction. However, I think yours are deliberately wired that way so as to operate differentially, like ailerons on an aircraft's wing. When one goes up, the other goes down and moves the boat laterally but not horizontally (side to side but not fore & aft). We were told taht trim tabs were to be used that way to cure any 'list' and the power trim on the sterndrive leg was to be used to adjust bow up / down (fore & aft ) trim. Trouble is we have been given conflicting advice as to whether you adjust list by moving the relevant trim tab up or down. What does work is dropping both trim tabs at berthing speed to assist low speed handling (which you cannot do if they operate in different directions). Hope this helps. Mike

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Message 2 of 10
Posted by member Tim Saul on Monday 27 June 2011

We have a Hardy 25 with 'Boat Leveller' trim tabs and a Volvo 280B outdrive. There are two rocker switches for trim tab control, one port and one starboard.You should be able to control both tabs independently to trim the boat on the plane to achieve a comfortable ride with the best hull speed for the minimum no of engine revs. If the starboard tab rises when the port is lowered it sounds like you have a leaking valve in the system.What type of tabs are they? If they are hydraulic then this should certainly not happen. If they are electrically operated tabs, look at the wiring and get a wiring chart to check that the connections are correct. Hope this helps.

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