MULTI-D PROPELLER ALUM.AMITA3 13X21 RIGHT

Function and technical context

This aluminum propeller with 13×21 pitch and right-hand rotation belongs to the AMITA3 range from Solas, a consolidated reference in nautical propulsion for medium and high-power outboard engines. It acts as the final element of the transmission chain, converting the engine's power into effective thrust on the water through its three blades with optimized geometry. The diameter and pitch directly determine the load capacity, acceleration response and working revolutions of the engine, so choosing the propeller with the correct specifications is essential to protect the powertrain and obtain optimal performance from the boat. A worn, damaged or improperly pitched propeller can cause cavitation, over- or under-revving of the engine, with consequent premature deterioration of internal components.

When to replace this part?

The most common symptoms that indicate the need to replace the propeller are: abnormal vibrations in the stern, loss of top speed, increased fuel consumption without apparent cause, difficulty in reaching the working rpm recommended by the manufacturer, or visible damage to the blades such as bends, cracks or cavitation erosion. It is recommended to visually inspect the propeller at each beaching or start of the season, and replace it preventively at the slightest sign of deformation, since a damaged blade can transmit mechanical imbalances to the shaft and the internal seals of the conical group. Acting in time avoids costly engine and transmission breakdowns that could leave the boat inoperable on the high seas.