How to choose the right propeller for a boat engine

Before you buy a propeller for a boat engine, you need to have some knowledge about its parameters and component parts. For example, the diameter, by which is meant the circumference, which is described by the blades.

Another property that needs to be considered is slippage. This characteristic appears due to the flow of water from the blades and displays the difference between the actual pitch of the screw and the one shown in the passport. Slippage directly affects the efficiency of the motor. The lower this indicator, the greater the efficiency.

Under normal conditions, slippage should not exceed 18%. Below are the recommendations that will help solve the problems associated with the engine speed (when the actual number of revolutions is different from those specified in the passport).

And also do not forget about the disk relationship. This term refers to the relationship between the areas of the blade and the described circle.

And, of course, the most important parameter is the pitch of the screw. From this characteristic will depend on the load that comes to the boat's engine and, accordingly, to the propeller. That is, there is a linear relationship: the greater the step, the more the motor will produce revolutions, and, accordingly, the speed of movement will be greater. In this case, the diameter of the screw assembly will decrease in proportion to the step size. This means that the larger the last, the smaller the first.

So, as promised, consider the solution of fairly common problems. What if the real number of revolutions is greater than the value specified in the passport? It is necessary to increase the step. If you increase it by 2.5 cm, the speed reading will decrease by 200 units. If the real speed is lower, then you need to do the exact opposite.

There is a company called Michigan, which produces not quite standard propellers. Blades for boat motors produced by this company differ in such parameters as diameter and disk ratio. Use this product is desirable only after consulting with specialists.

Further, recommendations will be presented that will help to increase the course of glide, as well as reduce the speed of gliding.

Choosing a propeller rowing, you should consider the disk ratio. For example, Michigan Wild blade products are capable of increasing the disk ratio with the least speed loss. It should be noted and 4-blade propellers Solas. According to their characteristics, these nodes will reduce the speed, when the engine will give the maximum speed.

Well, if you want to experience the maximum speed of your transport, then you can use the following tips. First of all, it is better to use stainless blades. And best of all, the motor unit is still ventilated and polished. This combination of parameters provides a significant increase in speed.

Also, fans of high speed and fishing on the rivers will be interested in such a propeller as Michigan Ballistics. With it, you can increase the efficiency to the maximum. This is due to the 3-blade system.

Thus, following the modest advice, you can understand the range of products offered and choose the propeller that is right for you.