Page 4 - Yamaha Marine Zubehör 2021

Propellers

Propellers and Propeller Accessories

Propeller Information

THE PROPELLER MAKES ALL THE DIFFERENCE.
If you haven’t tried one of Yamaha’s comprehensive range of propeller solutions, you’re not getting the most out of your outboard.
In fact, the right Yamaha propeller can maximize your outboard’s acceleration, top speed, fuel economy and lifespan, all while
providing a quieter ride and better handling. No matter what your application, there’s a genuine Yamaha propeller that can help you
achieve peak performance.

25 Pitch - 5200 RPM PITCH
23 Pitch - 5600 RPM
21 Pitch - 6000 RPM Pitch is the 'theoretical' distance (in inches) a propeller would travel in one full revolution, if it were
travelling through solid matter. A prop with low pitch will deliver better acceleration/hole shot and
pushing power but a lower top speed, while a higher pitch prop will provide less thrust, but with
a higher top speed. The correct propeller will allow your engine to reach the upper portion of the
W-O-T range specified by the manufacturer with a normal-to-heavy load, but without exceeding it.
Each inch of pitch is equal to approximately 150 +/- 50 RPM.

DIAMETER
Diameter means the total width of the “circle” at the blade tips as the propeller spins. Larger
diameter props push more water and reach deeper down into the water, so they're typically used on
large, heavy boats or ones with higher-placed engine mountings. A smaller diameter prop is usually
used on lighter boats, where the prop operates closer to the surface of the water - or when you
need a higher engine RPM.

NUMBER OF BLADES
Three-bladed propellers are the most common, offering good overall performance, top speed, and
efficiency for most applications. While a four-bladed prop will provide increased bow and stern-lift
and reduce prop ventilation, this normally means more drag on the engine, resulting in lower top
speeds and different handling characteristics.

BLADE GEOMETRY
Blade geometry refers to the actual shape of the blade (or ear). By manipulating the blade’s shape,
diameter and pitch progression, different performance characteristics can be created for each
different type and style of propeller.

2 – Dealer Rigging Guide