The two Mercury Fury propeller models offer a perfect example of the advantage of adding a fourth blade. That fourth blade also adds some drag, which might reduce top speed. Increasing blade area can improve hole-shot acceleration and increase lift at the stern. It offers outstanding performance on lighter bass, bay and flats boats running high-horsepower outboards.Īdding a blade further reduces vibration, and usually adds blade area to a propeller design. The three-blade Mercury Fury propeller is one of the company’s most popular props and a great example of a premium three-blade model.
Within that three-blade design, engineers can manipulate blade area, blade rake and cupping to build a prop that can perform well in a specific application – for instance, lifting the bow of a performance boat for more speed or lifting the stern of a heavy cruiser on plane. A propeller with three blades achieves the best balance of smooth operation and minimal drag through the water, which is why a three-blade design is the most popular for general boating. But with a single blade winging around at speed, the vibration would be intolerable. Technically, a propeller with a single blade would be the most-efficient design simply because it would produce the least drag in the water. Let’s look at how the number of blades affects propeller performance. Each design is intended to enhance overall performance in certain applications to make a boat work its best on the water. That’s one reason Mercury Marine offers a wide range of propellers, including models with three blades, four blades and even five blades. Speed is one element of that experience, but so are acceleration, economy, comfort and boat handling. It’s more important to consider how a propeller can impact the entire boating experience. They assume a prop that will make their boat go faster must be better. But like I said you already have your speed prop and honestly are you going to really miss the 5 to 8 mph loss you will see with a high five? Your boat is already a fast boat so mid to low 70s isnt slow… You will still pass the nitros and rangers like theyre standing still! I know some of you will think Im crazy for running a 21 pitch prop on a 175 I dont run it at WOT it would make my engine go boom! Its strictly for recreation low speeds and for ripping peoples arms out of socket.When considering propellers, many boat owners get fixated on speed. It doesnt take long to swap a prop so why look for an all purpose prop? You have a fast prop now, why not buy a torque monster high five for the rough stuff and pulling a heavy load or getting on plane if you know youre going to be in the skinny stuff? A four blade prop is an inbetween prop that if you have to have an all purpose prop then thats the ticket. I personally dont think theres such thing as an all purpose prop. It gets me a co and a boat load of gear on plane quick, its plenty fast I had seen low 60s with my old engine which was a 150 I now have a 175.
I have a 24 pitch for fishing big rough water, but also get enough speed to keep up when I need it. Just curious, if you have run a high five in the past and liked the performance why not just get another high five? I like my high five in fact I have two of them a 21 pitch for pulling a tube or ski literally will rip your arms out of socket if youre not ready and you can stay on plane at low speeds.
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