But even if a stiff engine mount is used, over a period of time the engine will settle on the rubber element in the mount and the engine will go out of alignment. And every time the vessel moves ahead or astern the propeller and shaft thrust will try and push or pull the engine, which means the only thing preventing the engine movement is the mount, resulting in propeller shaft/ cutless bearing wear, more vibration and stress.

Halyard's Aquadrive solves the above problem, they tell us, reducing vibration by up to 90%. It allows free movement between engine and shaft, it takes the propeller thrust straight onto the hull, and allows free movement of up to 25mm between engine and shaft - up and down, sideways or fore and aft.

No vibration goes down the shaft, the mounts are no longer strained forwards by the propellers thrust and just work at reducing more vibration.

Halyard (M&I) T: 01722 710922 F: 01722 710975 E: techhelp@halyard. co. uk W: halyard. eu. com