This product is for conventionally driven vessels. The system uses a constant velocity joint to self-align the shaft. Thrust taken up on the engine from the propeller invariably changes the angle of the shaft line, particularly when the engine uses soft rubber mounts. Using a single SigmaDrive replacement coupling will ensure the shaft is correctly aligned at all times, especially under high load. The result, reductions in many cases of around 50% in noise and vibration.
The SD standalone unit that resists the propeller thrust compensating for up to 3 degrees in all directions.
SD 55, 100, 150, 225 and 300
This system incorporates a thrust bearing to isolate the propellers’ thrust to the engine. It uses a combination of three SD units built together. Two of which are incorporated in the thrust bearing and another coupled to the transmission with an intermediate shaft.
STS Sigma Thurst System STS 550, STS 1000, STS 1500, STS 2250, STS 3000
D- Sigma is a replacement Cardan drive also coupled to a pair of constant velocity joints and can replace existing Cardan shaft for Water jet Drives and Pod Drive propulsion systems.
D Sigma D 55, D 100, D 150, D 250 and D 300
The SD unit is a standalone unit that resists the propeller thrust compensating for up to 3 degrees in all directions and fits all makes of V drive transmissions.
V Drive SDV 55, SDV 100 SDV 150, SDV 225 and SDV 300