Martyr Anodes CMPSSS07 MPS Adjustable Shaft Grounding Strap 1-4 Inch

The MPS Adjustable Shaft Grounding Strap provides a critical electrical connection between your vessel's drive shaft and the bonding system, helping to reduce galvanic corrosion on expensive metal drive components. This professional-grade shaft strap eliminates the need for traditional shaft anodes on fiberglass and wooden vessels by efficiently grounding the shaft to hull-mounted sacrificial anodes.

Key Features:

• Fits shaft diameters from 1 inch to 4 inches
• Stainless steel mounting arm: 250mm (9.8 inches) long x 22mm (0.87 inches) wide
• Tinned copper braided strap section: 330mm (13 inches) long
• 11 positioning holes for precise tension adjustment
• Includes conductive grease, spring, stainless steel zip tie, and mounting hardware
• Adjustable design accommodates various shaft sizes and installation configurations

How It Works:

The shaft grounding strap wraps around the propeller shaft with a tinned copper braid that maintains electrical contact. This connects the rotating shaft to your vessel's bonding system, allowing transom-mounted anodes to protect all submerged metal components including the shaft, propeller, struts, and rudder hardware.

Installation Notes:

Should be installed by qualified marine technicians. The strap mounts to the hull near the shaft with the braided section wrapping around the shaft in the direction of rotation. Regular inspection and reapplication of conductive grease is required for optimal performance. Professional testing with cathodic protection monitoring equipment is recommended.