How can I get more speed out of my pontoon boat?
If you keep your pontoon tubes clean from debris and scum, with smoother surfaces, you will reduce the drag on your boat and get faster speeds. This will increase the laminar flow of water around the boat, as there won’t be as much obstruction for a smoother glide through the water.
How deep should my prop be in the water pontoon boat?
The prop on my pontoon boat is typical in that it sits approximately 4″ lower than the pontoons, so realistically the boat will run easily with at least 12″ (1 foot) of water under the tubes, as long as there are no obstructions in the water or submerged hazards.
What pitch prop will make my boat faster?
A lower-pitch prop is like low gear in a car or a bicycle—you’ll accelerate quickly but top speed will suffer. A prop with too much pitch may deliver more top speed because the prop moves further forward with each rotation, but acceleration may be poor and the boat will struggle to get on plane.
What does a 4 blade prop do for a boat?
Reasons for 4 Blades
The increased blade area afforded by the addition of the fourth blade can provide increased water displacement capability, lift, and grip, as compared to a 3-blade propeller. In terms of actual boat performance, these characteristics can combine to enhance: Handling.
Is 60hp enough for a pontoon boat?
115hp has become the starting point for horsepower and can be a very suitable boat for lots of boaters, 150-175hp choice is a great all-around pontoon and can truly be a versatile “do it all” boat, 200+hp is the way to go if you have a need for speed and want the best performance out of your pontoon.
Should I polish my pontoons?
Yes, and there’s a good reason for doing so. If you leave any of the pontoon polish on the toons it can seal on and not look good. You’ve gone to so much trouble already to prepare, clean, buff, and polish so please don’t then un-do all your work by leaving polish residue on the aluminum tubes.
How far in the water should an outboard motor be on a pontoon?
A boat rigger’s rule of thumb is that the motor can be raised one inch for each eight to 10 inches of distance between the transom and prop. As the prop moves further aft, it’s also likely to be in cleaner, “harder” water, and be more efficient.
How shallow can a pontoon float?
You can go for a Pontoon Boat, which usually comes with downdrafts of 16′′ and 24′′ are available, but with the motor trimmed up, they can run as shallow as 10′′.
What causes pontoon boat to Cavitate?
Normally cavitation occurs when the prop is too close to the surface of the water. Water disturbance from the pontoons can also cause it on some toons. If you can post some pictures of the relationship between the lower unit (Cavitation plate in particular) and logs when you get a chance, that would help.
Is 3 or 4 blade prop better?
The most asked question at the boat shows is almost always “what is the difference between a 3-blade and a 4-blade boat propeller?” 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- …
What does a 21-pitch prop do?
The Mercury manual defines pitch as “the distance a propeller would move in one revolution if it were moving through a soft solid, like a screw through wood.” For example, a 21-pitch prop would move forward 21″ in one revolution. The lower the pitch, the better the holeshot.
What is the difference between a 17 and 19 pitch prop?
The 17″ prop will give you a better hole shot but lower top speed. If it is to small it the engine may go over the recomended top RPMs. The 19″ prop will give you less of a hole shot but a higher top speed if the motor is strong enough to turn it in the recomended top RPM range.
Is a 5 blade prop better than 3?
The increased blade area afforded by the addition of the fourth or fifth blade can provide increased water displacement capability, more lift, better bite and grip, as compared to a conventional 3-blade propeller.
How do I choose an outboard prop?
If the RPM is below the recommended operating range, switch to a propeller with lower pitched blades. If the RPM is higher, switch to a propeller with higher pitched blades. Each inch of pitch size will change the RPM by 150-200 RPM. Aim for the midpoint or higher of the recommended operating range.
How do I know what pitch prop I need?
Ski boats need more top end speed, and should choose a prop with a higher pitch. Cruisers and houseboats need more performance at displacement speeds, and should use a prop with a lower pitch to achieve low-end power.
How much hp does a pontoon boat need?
The smallest engine we recommend for a pontoon is 9.9 HP. Many lakes in Ohio (like Charles Mill) are limited horsepower lakes that do not allow engines above 9.9 HP on pontoons. A 9.9 HP engine is great for slow cruising, but don’t expect to go faster than a 5 MPH.
What size motor do I need for a 24 foot pontoon boat?
According to standards, 20-foot long boats work well with 115 horsepower. Thus, when it comes to a 24-foot pontoon boat, roughly 150 horsepower is required. Having the right motor size enables you to transport passengers and belongings with convenience, ease, and comfort.
Are pontoon boats fuel efficient?
On average, a pontoon boat gets around 3.5 mpg (miles per gallon) at MAX RPMs. However, the mileage can vary from as small as 1.5 mpg or less to as high as 7 mpg or more depending on the weather condition, boat’s weight, boat’s condition, RPMs, and most importantly, the boat’s engine type, etc.
What is inside a pontoon tube?
But have you ever wondered what is in a pontoon tube? Although there are foamed-filled tubes, most pontoon tubes are hollow. Some pontoons are filled with air to help strengthen the inner walls of the tube and to also check for leaks. Many modern hollow pontoon tubes are chambered, being divided inside into sections.
Should you wax a pontoon boat?
Fresh water is generally easier on your pontoon, but that doesn’t mean you’ll be exempt from regular cleaning and maintenance. Experts also recommend that you wax your pontoon every season, depending on the quality of the wax—which leads us to our next pontoon boat maintenance tip.
How much does it cost to polish pontoons?
Most professionals charge $500 to $600 or more to polish and clean a pontoon boat depending on the overall length of the boat. Cleaning your pontoon boat can get really expensive if you ask an expert to do it for you. Charges usually range from between $500-$600 depending on boat length.
What size motor do I need for a 20 foot pontoon boat?
What Motor Will be Best For Your Pontoon Boat? Experts recommend having a baseline engine of 115 horsepower for boats with a 20 to 25-foot range. This baseline will guide you on your activities. The 115-horsepower motor is an adequate size for most pontoon boats.
What happens when outboard is mounted too high?
Too high usually results in low water pressure, prop letting go in turns, or lack of bow lift are usually the telltale signs. Sometimes porpoising is caused by too much bow lift and dropping the motor will give it more bite and make it worse.
How far below the bottom of the boat should the prop be?
If you have a short shaft motor, the top most part of the transom and the lower most part of the boat should be about 15 to 16 inches. For a long shaft, I think 20 to 21 inches is correct.
Is a pontoon boat good for shallow water?
If you are looking for a reliable shallow water boat that comes in all sizes, pontoon boats stand out as an excellent choice. With their shallow draft these watercraft can navigate bodies of waters that don’t have enough depth for many other boat types.
Are pontoon boats easy to sink?
“It’s very hard to sink a pontoon boat. Unless you pierce one of the pontoons – and even then it’s only going to list,” said Shepler, who suggested letting the roller come in from the side next time.
How do you drain water out of a pontoon boat?
how to drain water out of a pontoon – YouTube
What happens if outboard motor is too low?
If the outboard is too low, it creates excessive drag, which cuts into speed and fuel efficiency. If it’s too high, the propeller tends to ventilate, losing its bite on the water and blowing out while turning and in steep seas.
Should cavitation plate be underwater?
Re: Cavitation Plate
your cavitation plate should be right at the water level. As a rule of thumb it should be 1 inch above the hull for every 12 inches back. (if you have a eurotransom, or bracket or something.) If your cavitation plate is under water you might get better performance if you raise the motor.
Why do boat propellers make bubbles?
So where do the bubbles come from? When a propeller spins quickly enough, the pressure on the water near the trailing edge of the propeller blade gets so low that the water vaporizes, forming a bubble of air.
What does a 5 blade prop do?
Placing the drive higher on the transom reduces drag and can increase speed, but it also places the propeller near the surface. The five-blade design of the Maximus allows it to maintain a solid bite on the water, even in the highly aerated water flow produced by performance boats with stepped hulls.
What is the most efficient propeller design?
A single-blade propeller would be the most efficient – if the vibration could be tolerated. So, to get an acceptable level of balance with much less vibration, a two-bladed propeller, practically speaking, is the most efficient. As blades are added, efficiency decreases, but so does the vibration level (Figure 4-13).
Will a different prop increase speed?
Change Your Propeller
If you are running an aluminum prop, changing to even a basic stainless steel prop will usually improve top speed. Because stainless steel is stronger than aluminum, the blades on a stainless prop can be thinner, which reduces drag in the water.
What does Overpropped mean?
Over propped means the engine cannot achieve its max rated RPM. Under propped means the engine reaches max RPM too easily ie: the boat doesn’t go as fast as one would expect. Both effects are caused by a combination of pitch and prop size.
What is the difference between a 15 and 17 pitch prop?
The 15 pitch prop will troll at a slightly slower speed than the 17 or 18 pitch prop. The 15 pitch prop will give you a better hole shot, and will allow you to work big water with ease. Yes, you will burn a bit more fuel, because you will have to spin a few more rpms to get where you are going.
What’s the difference between a 19 pitch and a 21 pitch prop?
A simple explanation of prop pitch indicates that a 21-pitch prop, if turning in a thick substance, will push your boat forward 21 inches for every revolution of the blades. Conversely, a 19-pitch propeller would move your boat forward 19 inches.
What diameter prop should I use?
A good rule of thumb is smaller diameter props are typically used with smaller engines/boats, and larger diameter props are typically used with larger engines/ boats.
What happens if your propeller is too big?
Overpitched and oversized propellers can cause an engine to work harder and hotter than it should and not allow it to reach optimal cruising rpm, resulting in poor performance and decreased engine life.
What RPM should I run my outboard?
Most mechanics and engineers suggest the best cruising speeds are achieved at 3400 and 3800 rpm respectively.
Is a 5 blade prop better?
In recent years, 4- and 5-blade props have become popular because they suppress vibration and improve acceleration by putting more blade area in the water, especially when the prop is breaking the surface. They can also provide more bow lift for added speed.
What is the difference between a 2 blade and 3 blade prop on a boat?
They have a major advantage when going against heavy winds and seas or a current as they will keep your boat speed by up to 30% better than the two blade. Moreover, they will run much smoother and reduce vibrations as it is balanced around 3 or 4 points as opposed to 2.
Are four blade props better?
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.
Is a higher pitch prop faster?
A prop with too much pitch may deliver more top speed because the prop moves further forward with each rotation, but acceleration may be poor and the boat will struggle to get on plane.
Will a stainless steel prop increase rpm?
There are a lot of variables here to consider but the stainless steel has more bit, so for the most part the rpm will be less. PJM is correct, a similar styled SS prop will drop you 100 – 200 rpms. If you look at the more aggressive SS props, your rpm’s will drop even more.
Is a bigger propeller better?
The bigger the prop, the more drag we have. This goes for the number of blades that the prop has as well. The more blades that the prop has the more drag it will have and the less top end wide open throttle speed we will be getting.
What does changing the diameter of a prop do?
Diameter usually increases for propellers used on slower and heavier boats, and decreases for propellers intended for faster boats. A prop with more diameter has more total blade area, which allows it to handle more power and create more thrust to move a heavy boat.
Does prop pitch affect speed?
The lower the prop pitch, the better your hole-shot. However, this comes at a price: top speed. The lower pitch makes the engine reach maximum rpm at slower speeds. Conversely, a higher pitch will deliver greater top speeds, but slower acceleration.
How long can you run an outboard at WOT?
According to David Meeler, Yamaha’s product design manager, “You only have about 15 seconds of cumulative dry running time before your impeller starts to fail due to excessive friction. That means if you run your outboard dry for three seconds five times, it will likely fail.”