Mercury 200 Optimax Especificaciones descargar pdf (Pagina 37)

GENERAL INFORMATION

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Pitch ‑ The pitch is the theoretical distance, in inches, that a

propeller travels forward during one revolution. Pitch can be

thought of similar to gears in a car. The lower the gear, the faster

the car will accelerate, but with lower overall top speed.

Likewise, a lower pitch propeller will accelerate quickly, but

top‑end speed will be reduced. The higher the propeller pitch the

faster the boat will usually go; though typically slowing

acceleration.

Determining the Correct Pitch size ‑ First, check the full

throttle RPM under normal load condition. If the full throttle RPM

is within the recommended range, select a replacement or

upgrade propeller with the same pitch as the current propeller.

• Adding 1 inch of pitch will reduce the full throttle RPM by

150 to 200

• Subtracting 1 inch of pitch will increase full throttle RPM by

150 to 200

• Upgrading from a 3‑blade propeller to a 4‑blade propeller

will generally decrease full throttle RPM by 50 to 100

IMPORTANT: Avoid damage to the engine. Never use a

propeller which allows the engine to exceed the recommended

full throttle RPM range when under normal full throttle operation.

PROPELLER MATERIAL

Most propellers manufactured by Mercury Marine are made from

either aluminum or stainless steel. Aluminum is suitable for

general purpose use and is standard equipment on many new

boats. Stainless steel is over five times more durable than

aluminum and typically provides performance gains in

acceleration and top end speed due to design efficiencies.

Stainless steel propellers also come in a larger variety of sizes

and styles that allow you to dial in the ultimate performance for

your boat.

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Mercury 200 Optimax Especificaciones Pagina 37