The elements that characterize the performance of a propeller are: pitch and diameter. Compared to these, all the other characteristics of the propeller largely take second place. Between the pitch and the diameter, the most important element, which determines the level of propeller performance, is the pitch. In fact, if the diameter is changed at the same time, even significantly, the performance of the propeller does not change. On the contrary, even a small variation in the pitch, for the same diameter, generates quite sensitive effects.

How to establish the number of blades?

Even the number of blades has an entirely secondary influence on the performance of the propeller compared to the influence of the diameter and pitch. The main, albeit modest, influences given by the number of blades on the propeller performance are essentially two: • For particular navigation conditions, a propeller with a high, and preferably odd, number of blades is generally quieter than the same propeller with a lower number of blades. • The optimal theoretical diameter of a propeller, referring to the same optimal three-bladed propeller, should vary as follows: two-bladed propeller: 3% larger diameter four-bladed propeller: 2.5% smaller diameter five-bladed propeller: 4% smaller diameter

How to compare the performance of two propellers?

In order to make a true comparison between the performance of multiple propellers, it is necessary to consider only one need at a time. In fact, each user has their own needs and prefers certain performances over others, for example maximum navigation autonomy (i.e. lower fuel consumption per mile travelled), maximum navigation speed, maximum maneuvering efficiency, maximum comfort in cruising speed. cruising, etc... Each need, to be best satisfied, requires a specific pitch and it is therefore important to have a propeller that allows the pitch to be varied.

Buying a Max Prop

Free and custom sizing

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Assistance and Information

The Max Prop Team is at your disposal for any information and details you want to know about your propeller. If you are passionate and curious, it will be a pleasure to illustrate every technical detail and calculation to optimize your navigation as much as possible. If, on the contrary, you do not have time to go into technical details, we will provide you with the best type of propeller for your boat, without having to worry about anything.

Payment and Shipping

Payments via the safest circuits and shipments via certified and consolidated express couriers. Each shipment has a 24-hour tracking service that allows the customer to know where their package is at all times. Shipments are made all over the world and, depending on the country of destination, may include the goods customs clearance service. An insurance service is available on request.