3 blade prop vs 4

They pilot more like plane in fast forward and more like a helicopter in. Looking for more performance from your boat.

IDO Community Forums Fishing Forums General Discussion Forum 4 blade or 3 blade prop.

3 blade prop vs 4. One of the main reasons people seem to choose 4 blade propellers over 3 blade propellers is the benefits afforded by the increased blade area given by the extra blade. This extra blade area provides increased water displacement capability greater lift and better grip than the 3 blade propeller counterparts. The short answer is the 4 blade propeller has more surface area and bite which allows a boat to get up on a plane and maintain it easier at a lower RPM.

However the 3 blade prop has less surface area which offers less drag and more top speed than the 4 blade prop. The difference between a 3-blade prop vs a 4-blade prop is that the 3-blade smaller blade ratio is faster with a higher top speed and the 4-blade higher blade ratio has a better hole-shot acceleration and better stern lift as well as better handling and fuel economy because it will keep you on plane at a lower speed. Three-blade props offer a nice compromise when it comes acceleration efficiency lift and speed.

A four-blade propeller on the other hand can boost acceleration efficiency or lift but at the cost of a lower top speed. Jim Hendricks Sport Fishing. Theoretically a 3-blade propeller should always be more efficient than a 4-blade.

However in the past two big issues have prevented the 3-blade from taking the lead in popularity. The first was a lack of manufacturing precision which commonly caused 3. 3 Blade vs 4 Blade Propellers Whats the Difference Between 3 and 4 Blade Outboard Props - YouTube.

Generally yes a 4- blade will be less efficient than a 3-blade for the simple reason that the leading edge of the prop loses efficiency as it encounters the disturbed water left by the blade in front of it. Typically a 3-bladed prop will have more space between the. That is if going from a set of numbers taken from a 3 blade to go to a 4 blade.

All but aluminium 4 blades usually have a much larger diameter. As far as the best of them go Im not aware of any better than the Rev 4but they wont be suited to all situations. They almost always need big power to turn them well.

Answer 1 of 5. Multirotor with 3 propeller have better Yaw authority than any other design that mean then can turn on themselve do a 180 faster than any other multirotor design. They pilot more like plane in fast forward and more like a helicopter in.

A four blade gives better holeshot much better in cornering and the top end loss is negligible. At least on my 115 4 stroke. Also I can run my motor higher in the water column with a 4 or 5 blade prop which actually gives me more top end as I dont get slippage and cavitation like I do with my 3 blade props.

Testing 3 Blade vs 4 Blade Propellers Whats the Difference Between 3 and 4 Blade Outboard Props - YouTube. Most of the time when you decrease 3-blade prop slip by at least 10 you can improve top end speed. So the 4 th blade can provide increased water displacement capability lift and grip as compared to the comparable 3-blade propeller.

In terms of actual boat performance the 4-blade can enhance handling hole shot low-speed planning ability cruise. IDO Community Forums Fishing Forums General Discussion Forum 4 blade or 3 blade prop. 4 blade or 3 blade prop.

February 24 2012 at 849 pm 1275958. This may be a dumb question but i just purchased a boat and it came with 2 props. The motor is a 115 Mercury 4-stroke and it has a new 4 blade.

I have used both a 3 blade and a 4 blade on my pontoon boat. The 4 blade will definitely hold the water and be more responsive. Fuel mileage is usually a little better and you can usually run the motor a hole or so higher.

The 3 blades I have run tend to offer more top speed seems to plane in about the same time. Jon tries three different Mercury propellers on an outbo. Looking for more performance from your boat.

One of the best places to start is with your propeller. Efficiency is still king with the 3 blades especially if long runs are made but 3 blades require a lot of specialized work when taken out of the box to bring them to life. The 4 blades are a little more forgiving even in stock form but in reality all props need to be tweeked to run the best.

2 3 or 4 Blade Prop Im coming from 10 years in fixed wing and was led to believe that 2 blade props were more efficient than 3 which in turn were more efficient than 4. Yet I come into the micro quad world and find most quads with 4 with the occasional 3 blade. 4 blade props tend to load the engine more - if you compare a 3 blade prop of identical blade size and pitch.

4 blade props tend to have a lower top speed. When asking about rpm - it is essential that you note my comment on the comparison between identical blade sizes with repect to both shape length size and design - when comparing 3 and 4. I much prefer 4 blades on my props despite tuning for speed the smoothness and grip is substantial.

Mu ultimate go to prop thats always achieved the best speed and rpm range on the last 3 boats is a merc rev4. But swapping props is expensive. Thereof what is the benefit of a 4 blade propeller.

Benefits of 4 Blade Boat Propellers It offers decent acceleration good handling and a reasonable top speed. A 4 blade propeller is slightly smaller than its 3 blade counterpart so that the same RPM can be achieved. A 4 blade propeller is only normally used for larger boats and any which need to carry a lot of weight.

When moving from a 3 blade 16 X 215P to a 4 blade prop WE SHOULD HAVE selected the 4 blade 1525 X 22P in the first place as the 75 reduction in diameter had a dramatic effect on WOT RPM. At 500 and up there isnt much room for economical trial-and-error testing when you try new props in this size range.