Aquadrive

For ease of engine installation and to reduce vibration and noise, I chose an Aquadrive Constant Velocity (CV) drive shaft. The variable-length shaft incorporates two true plunging constant velocity joints, each capable of operating independently at any angle. This eliminates the need for precise engine alignment, both during initial installation and throughout the service life of the installation.

The rolling action of the balls within the CV joints absorbs all axial and radial loads, allowing the use of very soft and efficient engine mounts while reducing wear in connected bearings. Large, dedicated thrust bearings transfer the propeller thrust directly to the hull rather than to the engine. In addition, the propeller shaft is much better supported, resulting in smoother operation and reduced wear of the stern seal.