Gear box

The power is transferred to the gearbox through the primary system, which can be positioned in either a high-speed or high torque setting. From the gearbox output a poly-chain carbon fiber belt transfers the power directly to the propeller shaft, eliminating the need for a vulnerable and inefficient dog clutch and bevel gear system. The reduced need for equipment to be placed under the waterline also makes it possible for a better, slimmed down and more hydrodynamic design under water.


The gearbox is mounted separately, under the power head but above the waterline. It is, therefore, protected from damage if the unit runs aground. The gearbox is a robust electro-hydraulically operated system with two multi-plate clutch packages that allow for high torque and power transfer.
It is designed to withstand crash stops and operates both clockwise and counterclockwise to allow the user to mount or even transfer the OXE Diesel on any boat and between different configurations. Propeller rotation is simply selected from the display settings.











1. Input shaft assembly, 2. Output shaft assembly, 3. Reverse gear assembly


The primary system provides the user with the ability to change the gear ratio of the unit to fit various demands and driving styles. Depending on the needs of the operator, high torque or high-speed can be selected. The primary system is designed as a separate unit that is easily reversible. By switching the orientation of the primary system housing, the user can change the gear ratio between 1.73:1 and 2.17:1 on the OXE125, OXE150, OXE175 and OXE200.

Due to the extremely high torque delivered from the inline-six cylinder mounted on the OXE300, the interchangeable gear ratio functionality was removed. Therefore, the OXE300 is delivered with a constant gear ratio of 1.39:1.