MULTI-D PROPELLER ALUM.AMITA3 13.30X17 RIGHT

Function and technical context

This AMITA3 aluminum propeller, with a diameter of 13.30 inches and pitch 17, is part of the outboard propulsion system, being the component that transforms the mechanical energy of the engine into thrust on the water. Its multi-blade (Multi-d) geometry optimizes traction and performance in a wide variety of boating conditions, in both pleasure and work boats. Right-hand rotation is the standard for single-engine installations, ensuring correct transmission of torque from the tailshaft. A step of 17 inches determines the theoretical advance per revolution, directly influencing the maximum speed and working RPM of the engine; Using an inappropriate propeller can cause the engine to exceed or fall below the design RPM, accelerating engine wear or limiting available power.

When to replace this part?

The most common symptoms that indicate that the propeller needs to be checked or replaced are: abnormal vibrations in the shaft or hull, loss of top speed without apparent cause in the engine, excessive cavitation or imbalances when accelerating. Aluminum blades are especially susceptible to bending or splintering after impacts with submerged objects, rocks or bottom, so it is a good idea to inspect them visually at the beginning and end of each season. Replacing a damaged propeller in time prevents secondary damage to the shaft, seals and transmission case, repairs that are considerably more expensive.