Page 5 - Yamaha Marine Zubehör 2021

Propellers

BLADE SURFACE AREA
Blade surface area refers to the total surface of the blades. The greater the blade surface area, the
more water the prop pushes, for better hole shot and increased planing efficiency. However, too
much blade area can create significantly more drag, potentially restricting engine RPM and causing
negative boat-handling issues.

CUP
Cup is the small curved lip on the blade tip and/or trailing edge. Used in proper amounts, cup helps
reduce ventilation and propeller slippage, allowing for higher engine mounting and greater bow lift.
However, too much cup may cause excessive steering torque and bow lift - and limit the engine’s
ability to develop and maintain proper RPM at a certain pitch.

RAKE
Rake is the angle of the blade in relation to the propeller’s barrel, or centre, and is expressed in
degrees. A high rake propeller is best suited to applications where the engine is mounted high,
to help reduce ventilation and increase bow lift. However, too much rake can strain the engine,
decrease hole shot and produce negative performance and handling results. A propeller with a low
rake angle will cause less strain on the engine, resulting in potentially better hole shot and higher
operating rpm at W-O-T.

SDS - SHIFT DAMPENER SYSTEM
Reducing the annoying shift shock and noise normally associated with moving between gears,
Yamaha’s unique Shift Dampening System (SDS) uses a splined aft washer and a splined rubber hub
to absorb noise and vibration. This carefully engineered solution brings smoother, quieter gear
shifts.

Propeller Series

ALUMINUM/PLASTIC SERIES
Offering Yamaha design, quality and performance in a low-cost, lightweight propeller. this is a good
all-around choice for your Yamaha outboard. Available in a wide variety of sizes and pitches for
Yamaha outboards between 2 and 225 horse power, in right-hand and select left-hand rotation.

DUAL THRUST SERIES
Specially designed for sailboats and other large-displacement craft, Yamaha’s patented Dual Thrust
propellers are built to handle the job of pushing heavy loads through water. The hub is carefully
designed to redirect exhaust flow away from the blades, so Dual Thrust models cut through
“clean water” for higher efficiency and better acceleration. It is recommended that you contact an
authorised Yamaha Dealer for advice on installation.

TALON GP SERIES (WITH SDS)
Designed for outboards from F70 to F130. Our Talon – SDS propeller with our exclusive Shift
Dampener System (SDS™) brings a better top speed while offering a comfortable ride. The smooth
shifting and quiet, in-gear operation, even at trolling speeds, will be particularly beneficial on
smaller, in-line outboards.

Dealer Rigging Guide – 3