Propellers

Propellers

Our aluminum propellers | Our stainless steel propellers


All our boat propellers are available in this online store: choose according to various criteria (see below), and if you need help, give us a call!

Motor propellers for your boat or sailboat at the best price

The propeller is one of the most important parts of your motorboat. We have selected for you :

  • Mercury, Solas, Michigan Volvo aluminum propellers: durable and versatile.
  • Stainless steel propellers from Mercury, Solas, Michigan, Volvo: calibrated for performance and high power.
  • Plastic propellers for low-power applications.
  • Accessories: hubs, pins, spacers and washers, nuts... all the essential accessories for mounting your marine propeller.

Finishes, performance, longevity: detailed information on our product sheets.

The importance of choosing the right boat propeller

The propeller is the part that allows you to move forward. It affects engine speed, and therefore performance and fuel consumption. It's important to choose the right pitch and number of blades for your boat and application. There are many criteria you need to know to make the right purchase. Do you already know what you're looking for? Do you want to replace your propeller with the same model, or take the opportunity to modify your configuration for greater speed, more torque, or to save fuel?


It's not something you think about very often, and yet... It's around the propeller that the water is propelled from the leading edge to the trailing edge, creating a worm-like effect.

To propel your boat, the propeller transforms the engine's power into liquid. The water molecules, compressed upon themselves, transmit this force to the boat's forward motion.

It's a very important part that needs to be chosen with care. Faced with a wide range of sometimes confusing technical data, here's our advice on how to choose the right propeller.

A propeller is generally defined by :

  • diameter in inches or mm.
  • pitch in inches or mm.
  • number of blades, ranging from 2 to 7 in 98% of cases.
  • blade surface area, expressed in %, especially for shaft drive propellers.
  • pitch progressivity on blade geometry.
  • its material: aluminum or stainless steel, the choice is as important as the shape of the blades, depending on your parameters.

The choice of propeller is determined by engine speed, but also by your boat or sailing program.

To choose an engine propeller, you need to check several parameters

  • Engine make
  • Power
  • Type: 2-stroke, 4-stroke
  • Year of manufacture
  • Propeller diameter and pitch
  • Number of splines on shaft or hub
  • Boat type (displacement or planing hull)
  • Main use of your boat

Propeller diameter

The larger the diameter of your propeller, the greater the load on the motor to set it in motion.

Propeller pitch

Propeller pitch is the distance the propeller travels to make one complete revolution.

This is the most important factor in achieving the maximum rpm range recommended by a manufacturer. A smaller pitch will make starting more nervous (recommended for towed sports), but the boat will not reach its maximum speed, whereas too long a pitch will demand too much power and prevent the engine from accelerating. In general, for 1 inch more pitch, you lose 200 to 400 rpm, and conversely, for 1 inch less pitch, you gain 200 to 400 rpm.

Your choice of propeller pitch impacts your engine speed

You need to avoid over-revving your engine, while allowing it to reach the rpm where maximum power is delivered.
If your engine overspeeds, you'll need to increase the propeller pitch.
If your engine fails to reach its maximum speed, you'll need to reduce the propeller pitch: a 1" increase in pitch will result in an approximate drop in engine speed of 200 rpm.
Conversely, a 1" decrease in pitch will increase engine speed by 200 rpm.
To remember : Increase in propeller pitch = Decrease in engine speed
Decrease in propeller pitch = Increase in engine speed.

Number of blades

The 3-blade propeller is the most widely used, offering a good compromise between comfort and performance. For a powerful powerboat towing a skier, 4 blades are recommended (more grip at low rpm).

The hub

This is the cylindrical part to which the propeller blades are attached.
This is generally where you'll find the dimensions of your propeller.
Interchangeable hub propellers allow you to separate the hub from the propeller, so that only the defective part needs to be replaced.
In the event of core damage (i.e. the hub no longer transfers power to the propeller), you'll only have to change the hub, rather than the whole propeller. Not only does this type of hub increase the protection of the propeller shaft in the event of impact with an object, but it also allows you to change propellers quickly and save money, as you are no longer dependent on a particular brand.

Choice of material

The choice of material is very important, since not all materials have the same properties.
Aluminum propellers: general-purpose propellers up to 300 hp. The aluminum propeller is more affordable and ideally suited to less powerful engines.
Stainless steel propellers : top-of-the-range propellers, with greater strength and resistance, a material usually reserved for performance propellers. More resistant to corrosion, deformation and cavitation effects, the stainless steel propeller is a durable and robust choice.


Our aluminum propellers
Our stainless steel propellers

Please note for propellers with interchangeable hub,
don't forget to order the hub kit required for your motor.

Do you have any questions about your propeller choice?

Contact our team of enthusiasts

At Pieces Bateaux, you'll find all the engine and spare parts you need, as well as maintenance kits and other useful equipment. Don't hesitate to contact us for advice.

Also worth a look:

  • Various equipment for your boat
  • Maintenance accessories
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