Powertech LFS is a 4-blade propeller which is designed for Suzuki outboard engines and is ideal for the boaters who have installed a single powerful engine on their transom.
Powertech for the last few years has presented the LFS 4-blade propeller which is available in a diameter of 16 inches and in pitch size from 17΄΄ to 23΄΄ in one inch increments
Standard Bravo I is a widely known 4 blade propeller with remarkable performance. It is available in diameter 15 ¼" and in pitch sizes: 20", 21", 22", 24", 25", 26", 28", 30", 32", 34" και 36".
As we have seen in another article, Bravo I FS was «born» from very specific modifications made to our known standard Bravo I propeller. Knowing the performance of Revolution 19΄΄ to the combination of 6m Top Line with the E-TEC 175hp from previous tests, we thought that a comparative test with the relatively new Bravo I FS 21΄΄ would be of particular interest for several reasons.
Certainly the choice of the right propeller for our boat is not something simple since it depends on a number of factors which in turn interact with each other to such an extent that it is not possible to know what exactly is going on back there in our stern.
The Tempest plus is a 3-blade propeller that is designed for boats over 5 meters and recommended for outboard engines over 135hp. It is available in 17, 19, 21, 22, 23, 24, 25, 26, 27, 29 pitch and is considered as one of the fastest propellers.
Having in mind that the Tempest plus and Revolution match very well with the combination of Pegasus 20 with the E-TEC 175hp, we tested them in different pitches in order to compare and analyze their efficiency.
Tempest plus and Revolution are two well-known propellers with almost the same design, a fact that allows us to compare them each other and to draw safe conclusions about the effect of an additional blade on the propeller’s efficiency and therefore on the boat’s performance.
Testing the above propellers is a very good opportunity to realize once again that the type of our hull is the most important factor which defines the proper diameter propeller that should match in order to ensure the necessary thrust over the whole speed range.