I was always told to drop 2 pitches down when going from a 3 blade to a 4. That would bring your max engine rpm up too. Plus stronger acceleration as a bonus.
I am running a Yamaha 90 four-stroke and I need more torque very badly. With the three blade, I have gone all the way down to a 13 pitch to try to get more jump out of the hole, but now I'm hitting the rev limiter. I think mine is a 13 and 5/8 by 13 right now. What would you recommend for me if I step up to a four blade? @@OutOnTheReef
@ffdparker1 You're having the same problem that I'm having captain.It is the weight of cargo and fuel is lowering my R.P m's So when it comes to that So when it comes to that sometimes you need to get more horsepower Or you could be lucky and get a good size.Propeller but I don't know wish to recommend new captain
Maximum rpm of 5100 RPMs is really bad considering that you’re in a lake and a pretty light load not a Bahamas load you should keep that in mind. To reach the proper RPMs you would need to go down on pitch like three pitches.
Back in my boat racing days, we'd take several props to the lake and test them. The 4 blade is the correct type for your boat but I'd take 3 or 4 props at 2" pitch intervals in order to get the rpms close to 6k. Dropping 1 or 2" pitch might get your speed up a little as well as maintain mpg and on-plane time. A good dealer will let you try several props and allow you to purchase the one that best suits your application.
@@OutOnTheReef I believe your mid range economy will be as good or better than it is with the 3 blade. This is why testing multiple pitch/design props are imperative to getting the best prop for your application.
Of course a boat running at a higher rpm will consume more fuel. You need to get the engine running at the same rpm’s in order to determine data, unless your motor cant turn a 4-blade prop at 5700rpm. All in all, a good effort to compare the two though. Keep at it, Cap.
@@OutOnTheReef The 4 blade seems not ideal. Of course we have to know what the load on board is. If it's half loaded then the 3 blade suits better. 4 blade @ 5100rpm (full throttle), with the outboard's optimum range of 5000-6000rpm and half loaded boat, seems quite a bit low and will result in engine problems at some point. There are some excellent little programs on the web and in forums, to help you out, by entering some basic data of the boat - outboard - weights etc. they give you a reference at what prop should be used.
@@OutOnTheReef So many variables. Does the boat comes to plane easily with the 3 blade? Do you use the trim and/or flaps correctly? The Slip of the prop...etc.
@@OutOnTheReef Some rough calculations show that the Slip of the 3 blade is 12%, which is crazy high at Full throttle. Looks the correct prop is the 3 blade but different pitch or diameter, let me check again Try a 3 blade 20-21 pitch, or 15" diameter and see if the (otherwise optimum) rpm drop drastically, if not, then your slip will be reduced so consumption and your engine will work more efficiently.
You need to drop one to two pitch sizes when switching from a 3 blade propeller to a 4 blade propeller and by not doing this your engine will struggle with achieving the correct RPM. A 4 blade propeller is good for cruising, but you will lose top end speed.
The props shown on your video are different pitches than the links you provided. My understanding is when going to 4 blade you should add at least 2 pitches to compensate for the additional drag. So for me I’m considering going from a 3 blade 3x16x20 to a 4x16x22. That should keep me in the same RPM band. Your 4 blade actually had fewer rpm’s at WOT and appeared to be at the bottom of the RPM band. What were the pitch and diameter of your 2 test props. Thanks.
Great test Cap. When I test props, I always test it with full fuel and a load that corresponds to 2 person. I usually pick the prop that reaches the mid range between low/high WOT rpm limit f.ex. 5.500 rpm within the limit of 5.000-6.000 WOT rpm. In your case, I would pick 1" lower pitch so your WOT rpm could reach close to 5.500 rpm. I really looking forward to your next trip to the Bahamas and see your fuel usage. Navigate safe.
I AM KEEPING MY THREE PROP, i have a smaller C.C. FISHING BOAT. GRACIAS..... MY FUEL EFFICIENCY IS JUST FINE,. I only go out 65 - miles, i do not plan on going to the Bahamas... lol LOL gracias
Hermano, you are solo? During Covid? Why are you wearing the Bandit mask? Also do you need your ACR personal Locator Beacon, strapped to your vest? With Land All Around you? I am sure you have cellular signal service. i like the comparison..... GRACIAS.
Ehh nothing wrong with swapping a prop on the water. I think it would be preferable to have a buddy on board just in case you know something unexpected were to happen. Personally I run a 3 blade stainless ballistics prop with a hub saver kit on my 1995 20 foot Sea Arrow center console inboard with a Volvo Penta V6 4.3 liter mated to a OMC SX out drive. The motor was rebuilt and a bigger cam was put in and a bigger carburetor. A 4bbl Holley 4160 600 cfm carburetor.it bright it from it's original 190 HP to 225 HP. It also sounds pretty good you can hear it on my page in my videos if you care to look. I can't remember the exact torque off the top of my head I'd have to dig out the build sheet . My main cruising rpm is usually between 2700 rpm to 4250 on the higher end on average. At about 3800 to 4000 rpm I run about 30 mph depending on the conditions. Wot is recommended 5000 rpm and I run 45 to 50 depends on conditions again. But I don't run at that rpm often. I Only run that if a Storm is coming or I need to get in for an emergency or in a hurry. Or sometimes just for fun but top speed isn't a huge concern with me . I pack quite a bit of gear and keep some tools and a spare prop and my anchor things like that . I have also added 2 batteries from the original 2 . Then installed an audio system and lights, but basically I have probably added a good estimate I'd say 350 ish lbs of extra weight . That's not including fishing gear and people food and a full ice chest . As far as people usually it's either me and my wife or us and our 3 kids or us and another couple. At max I prefer 6 people just for the comfort level. I have noticed out of the hole it's a little slow to get on plane especially if the boat is heavy in the back . And depending on my load it has a hard time on plane as far as maintaining a good plane at lower speeds. The boat is rated for 10 persons plus 250 in extra gear. So I'm well within weight safety. And it's not a huge problem persay just a noticeable one . I'm ok with sacrificing a little top end speed for a better hole shot and slower and better planing ability at lower speed. I feel like a 4 bladed prop would be more suitable to what I desire . Would you agree givin everything I have mentioned? I have looked up compatible prop options and found a 4 blade with the correct diameter and pitch so I know mechanically it would be ok but do you think I would get the results I'm looking for ?
Wel cap. Is you find a smaller pitch because in my case i couldn't find anything smaller i would love to get something smaller, but you should try it , and find a company that accepts returns that wold be the best way , i hope the best for you cap.
3-Blade Propellers Higher top speed: 3-blade propellers generally have a higher top speed than 4-blade propellers. Better acceleration: 3-blade propellers also have better acceleration than 4-blade propellers. Less drag: 3-blade propellers have less drag than 4-blade propellers, which can lead to improved fuel efficiency. More efficient at higher speeds: 3-blade propellers are more efficient at higher speeds than 4-blade propellers. 4-Blade Propellers Better handling: 4-blade propellers provide better handling and stability, especially at low speeds. More grip in the water: 4-blade propellers have more grip in the water than 3-blade propellers, which can be beneficial for boats that are used for towing or carrying heavy loads. More efficient at lower speeds: 4-blade propellers are more efficient at lower speeds than 3-blade propellers.
Every boat is different and every boat has one perfect all round propeller. Experimenting with cheaper aluminium props then finally pimping prize prop with its stainless counterpart.
I concur with what most have said about too much pitch on that prop. Your engine is not at its HP potential at 5100 rpms at a very light load. You may see the reverse of what you want when you are loaded for the Bahamas. I would take your prop and numbers to a reputable prop shop and see what they say. In many instances, they can change pitch a size or two with your prop. Keep us posted capt!
@@OutOnTheReef Get the box tuned at a profrssional shop. Like the 300hp you get +30hp an lots of extra torque. That would compensate the prop and the fuel economy. ;)
I had a Mercury Vengence 14 x 19 and my max speed was 45 on a good day. Most of the time 43mph. It would also loose speed in turns when pulling a tube. I tried a 15.5 x 17 3 blade and it caused vibrations. I switched to an Apollo 14.25 x 19 and the boat felt sluggish getting to top speed. The Apollo has a lot of cupping. Hole shot was ok, but after that took forever to hit 40. I got a Solas HR4 14 x 17 4 blade. Hole shot was fantastic, on plane 3 seconds and got to 40mph much quicker. Top speed was about 45mph at 4700 rpm. My boat is heavy being a 99 Sea Ray Sundeck 240 with a 5.0. Also pulling tubes, no problem for the 4 blade. It doesn't slow down in a turn. Just set it to the speed you want and leave it. In smooth water I bet it will hit 47mph and a light load. But like others said, you are over propped at 5100rpm. You could try a better blade like the Merc Revolution.
You're so right about that Captain when I purchase my boat it came with a Yamaha propeller same size as the Solas 3 blade that I replace a long time ago and the Solace did a lot better because it had less cupping since I have more weight the solar excellent , thanks for the great info I will put it to the test in the future👍👍🏝
Where I am, we usually don't have many days of slick, calm water. I have a 24ft with twin 150s. I went from 3 blade to 4 blade. What a difference! When fighting swells or strong current, I have a lot more torque to push through. I try not to run more than 2/3 throttle as it makes a big difference in fuel consumption with 2 strokes.
Another thought on pitch. If a lesser pitch is unavailable, check with a quality prop shop like FJ Prop Miami to see it they can make an adjustment. Back in the day I was with Pitman Photo Offshore Racing and for a while Mercury supplies our engines so they could test engine mods on our boat. There prop guys, Dennis Cavanaugh, actually in Fond Du Lac would adjust our props to fit exactly what Mercury wanted. It’s definitely possible and probably not that expensive to have done. Sorry fir the long comment. Great video by the way.
Thank you Mike I really appreciate your help I know it comes from the heart and thank you for your experience and you're right A lot of my viewers like you has been telling me that once I put a load on the boat it's not going to perform and I just proved it yesterday I'll make a video to show you what happened with the load on the boat with a 4 blade prop Peller it's definitely over pitched. Thanks for your help and great Comics captain
@@OutOnTheReef there is a fine line, I would not change it, with the fourth blade you are adding more thrust at the cost of top end speed and more control at mid range
@@OutOnTheReef At WOT the engine should be spinning the Max RPM, if it doesnt reach it its over Proped. Engine is being restrained. Call Yamaha and verify. 5700 is Max RPM on that engine?
I run a solas rubex hr4. Will never go back to a 3 blade. If solas makes it. Drop another pitch or two on the 4 blade. You are at the very low end of wot.
Out On The Reef I don’t think so. It will make it easier for the engine to push the boat and with gear full fuel water for your trips I bet it wont even reach wot on the current prop.
Out On The Reef you burned less gal per hour because. 4 blades slip less. 15% vs around 25% for a 3 blade. Now pitch needs to be dropped do you can reach top end of wot empty. Fully loaded it will run in the mid range of wot. Just like a 12 speed bike. Need the right gear so at wot its super easy to turn.
@@thisismyalt9010 great info I will test it with full load and all gear to see what it does and if it doesn't perform I will definitely go down to pitch Thanks cap.
Esta comparacion no es ideal por que son diametros de helice diferentes, debes realizarlo con el mismo diametro y paso y se obtendra resultado diferentes
Like I said you'll love it!! I don't go to the Bahama's, but I do go to the Islands in Lake Erie which is just like going to there just NOT as pretty lol
Hi Capt... this is great information. I think a lot of us would benefit by changing props. I cannot change my prop from on the boat; I'd need to be in the water or on the trailer. It's easier for me to be in the water... I see below there are some who recommend a lower pitch; it would be nice to have access to multiple props to get try them all out. But, buying a large variety of props would be expensive. I've also been thinking about raising my engine about an inch as the anti-cavitation plate is under water when I'm running on plane. It measures out to be correct when out of the water, but runs a bit bow high unless I use the trim tabs..... Thank you for the hard work it took to put this video together!...
yes you are right this propellers are well over $300 and we can buy multiple pitch ,but since i go mid range this will really get my bow down and fuel economy, and i do see your problem about changing the prop being on the boat, but you can go to the shallow ware is calm and be in 2 feet of water no problems ,and do it on summer time before winter comes lol. thanks for you comment cap.
hi captain, yes you lost 2 miles at 5100 rpm and saved some gallons but check what the recommended RPM for your engine to determine the pitch size for the 4 blade propeller. you have lost about 700 RPM which means the engine is below the recommended RPM range . navigate safe captain .
Changing from a 3 blade to a 4, I definitely had more bottom end torque (Have the 4.3 inboard). Great for water skiing. The good news, going to a 4 blade helped me with my WOT. I no longer have to worry about blowing the engine since WOT hit exactly 200 RPM below my redline at a perfect pitch. Top end speed was the same at 55 mph. Could go faster with the 3 blade, it would just blow the motor. Dropped the RPM down dramatically helping fuel economy at cruising speeds at around 30 mph. Happy I made this change!
It sounds like you had an awesome result and yes the 4 blade propeller has a lot more Surface Pro works a lot better it all depends would you load also in my case after I place all the load and Fuel my performance went down.👍🤙⚓
I should had emphasized a little more on my props. I switch from a 19 pitch 3 blade alum. to a 21 pitch 4 blade alum. on my Alpha 2 outdrive. I tried a 23 pitch 3 blade but if felt like there was too much load and it took more time out of the hole shot. So I tried the Solas alum. 4 blade and it was perfect. More torque for sure, but my guess is it kind of acts like a 22 pitch 3 blade that don't exist???
@@itscorky yes sometimes you cannot find the proper pitch and they don't sell them and don't make them. That's why it's hard to find a perfect propeller
I seek knowledge. I have a 2007 25hp Yamaha 2stroke. My propeller size is 3x9-7/8 x 10-1/2 based open this size what prop would anyone recommend to give me the fastest speed and the number of blades? Thank you in advance
You need to change the pitch on the 4 blade to be at 5,700 + rpms. You are lugging the engine at 5100rpms. If you add 4 people and gear you will be at 4800 rpms. Bad test because you propped the pitch wrong. The 4 blade should be a 13 pitch.
I just replaced the prop on a fresh water runabout. The only prop in stock was a 4 blade. I decided to go with 4 blades because a lot of time is spent manuvering around other boats in the marina and also docking to a houseboat. I found that the four blade prop gave me way more control at lower RPMs. Even reverse was noticeably improved.
Thank you for the great video. Wide open throttle RPM decreases by 600 RPM. Is the 5100 wide open throttle with the 4 blade within range for your engine. Any thought of reducing pitch slightly to achieve the same WOT RPM or is the 5100 acceptable?
Yes the pitch needs to be reduced because once I load up the boat with all Fuel and all my equipment it's going to be hard to get back on plane so definitely the pitch needs to be reduced at least two sizes
Hello! Do you think a 4 propellor blade will pull a wakeboarder faster/stronger out of the water? Example: pulling a person of 65kg out of water is no issue. When trying with a person of 80kg it has not enough power.
Hello cap. In my case i saw more power at take off but at top speed was reduced and also you have to see how your rpms react is very important not to strain the engine cap.
Awesome test Cap great drone shots. You could actually see the 4 blade get more bite of the water to launch you. But I will have to agree with other probably more knowledgeable commenters and if it were my boat I'd want to see a few hundred more rpm at the top end to have a happier engine when you are full fuel, full water, full provisions. I don't know outboards but not being able to hit max rpm on a diesel under light load is a big no-no.
Yes your RPM was too low on the 4 blade. Drop down an inch or two on pitch to get the rpm up to 5800 if that is your motor's max. Speed will go up too.
I don't think you mentioned whether the two props were the same pitch...and the same diameter. We have to assume they were and you forgot to mention that.
@@OutOnTheReef Well...great! That was a very good test. I had a SS 3 blade prop on my 115 HP Yamaha OB for years. Somewhere along the line I learned that the fewer the blades...the better. You showed that information was not correct. The science of boat propellers is quite complicated. Check out the video I've included here: th-cam.com/video/Of1RY4M8VqM/w-d-xo.html
Why do you have a mask on all by yourself on the water out in fresh air. No Chinese corona out there..... I think the important thing to look at is whether or not the motor is operating within its factory RPM range at WOT with the 4 blade on it before I deemed it as a viable choice. You are not comparing apples to apples unless the 4 blade is turning the same RPM's as the 3 blade.
Very helpful. I bought the same prop. Cupped 14.5 19. 19 ft cuddy. 5.7 w 4bbl. Not trimmed 44 mph on GPS. 3 men n all our fishing gear. Out of the hole in a heartbeat. 3 blade. Fuel at 5 grand. 1 gal a mile. Terrible...
nice comparison! i never had 4 blades on my boat but i always thought 4 blade would be better. Now, after watched your video. the 4 blade is off my list. thanks for the video!
Capt, you are not reaching Wide Open Throttle rpms for that engine. If I recall correctly you should be getting over 5600 rpms at WOT. By not reaching the RPMs your engine is working a lot harder to reach the rpms not to mention that you are not getting the HP rating for that engine. If you add to the equation a full fuel tank, water, food, and all the supplies you bring to the Bahamas you could very well get stranded or worse. I had a 23’ Robalo with a 225F Yamaha that came with a 4-blade prop and I had to switch to a 3-blade. The change was incredible, specially at hole-shot. Fair Winds!
Thank you so much Captain for your gray suggestion I will keep that in mind definitely and do more research and see how can I help the performance of the boat thank you for your comment👍👍⚓
Did you drop the pitch for the 4 blade? You're supposed to drop down in pitch from what you had on a 3 blade if you switch to 4 blade. I'm using a 4 blade and absolutely love it in sloppy conditions.
I didn't get a smaller pitch because they do not sell it the smallest they have is what I got now but I know I should have went smaller a little bit at least two pitch
You are way overpropped. Engines should always be propped to turn max rpms. If you don't turn the max at full throttle you are over working your engine and missing out on better performance
Remember that the fuel flow displayed on your screen is a average according to your rpms. So the engine might actually be burning more fuel because it is under alot more load
I agree need to get the rpms up. The 4 blade was on the motor when I bought it. But do have the other 3 blade but never tried it. As a coparision 3 blade is a solas 14.8 x 17 pitch, 4 blade is a 14.5 x 15 pitch. Guessing that why my rpms hit 56 to 5800 rpm. It's down 2 degrees in pitch. I am by all means no expert just what It does on our yama150 on a 20 foot dc. Think it weighs close to 4000lb loaded( 75gl fuel) give or take 100 pounds or so.
3 Blade 14.5” Dia has a heap less surface area than 4 Blade 14.5". A fairer comparison would be to a 4 blade 13.5". If your Yamaha has the torque to run the bigger 4 blade prop, thats great , but you could have also saved some cash just put a 15.25” 3 blade on it and got the same effect.
You should try lake George and silver Glen springs run by boat. Is our local Bahamas! Water is colder and clear as tap water. And flushes your engines. We live the Bahamas and the springs. Keep up the good work!
Right at this moment I have a 3 blade 14 1/4 14-pitch but the reason I went down to that is because I added a Minn Kota trolling motor and there's a lot of weight on the boat so my recommendation is see how much your boat weights and how much gear do you have added on to it that would reduce your performance when it comes to RPMs
@@OutOnTheReef I’m useing a Yamaha reliance 14 1/2 x15 and im only getting 52 rpm a and 35 mph wide open,I think I need to go down on the pitch, do you have any recommendations?
@@hiroller27 the thing is that it's hard to find a smaller pitch , I talked to, and they told me that each tits you go down it's like 200 RPMs and I had the same problem with my pilot house that's why now I use a smaller pitch I use a 14 pitch which gave me 200 to 300 RPM more
Well I just saw the prop video and I said make sure you get to 5000 rpms and you did so all is well but can be tweaked a bit and you had some good advise given to you from the comments I see and yes a little adjusting on pitch with a full load will get you there , I knew you were going to like the results either way so enjoy the 4 prop because I do .. Glenn So Cal.
If you cannot get less pitch go down in diameter a bit and see what is available in pitch,also there are many options from other manufactures.It is a must that you prop to get full rpm or you will damage the motor.
Hi captain quick question I live in Houston Texas we wanna do a 5 day vacation in Florida I have a 4 year old son me and my wife we want clear water and get an Airbnb what part of Florida do you reccomend
hello Emre the best waters are in the Florida Keys amazing water, but if you dont want to go that far down Sarasota Marco Island , Naples are moderate looking waters, but if you want the tropical island feel ,the Florida keys will decently will do that. hope you and your family have a awesome time here at my home base Florida. safe travel cap.
Hey Captain, when next you take a trip to the Bahamas, you should compare your data on rough waters vs flat waters. It would be interesting to see the difference. Take into consideration the extra weight when you travel. Stay safe.
If you can't return the prop a prop shop might be able to reduce the pitch by maybe 1" That isn't enough but if the engine is deep enough they can cut the diameter a small amount Also mounting the engine higher on the transom will increase rpm. Pitch measurement is not in degrees It is in inches. The number represents how far the prop would advance in one revolution thru a semi solid like Jello
William does another awesome idea I didn't think of that part of cutting the blade in a machine shop I will look into it thanks for the great suggestion captain🤙👍
I have a 2 blade, 3 blade and 4 blade. 2 blades are preferred for racing, 3 blades are also for racing but excludes drag or hydropower racing. The 3 blade props are mostly prefered for fast boats to larger cruiser. Whereas the 4 or 5 blades are for heavy workload and vibration-less thrust. As I have a 125kph speed boat, I use a 3 blade. I used a 2 blade and did not go well for a 4 meter Salem ski boat (could pull only 3 skiers whereas the 4 blade did so without loss of speed poerwer by its Chevy 400ci engine. Bigger boats with bigger engines require bigger props. The selection of blades depend on the tests to get maximum thrust and speed to what the engine can cope with.
Excellent information captain Thank you so much for spleen to me and detail so I can understand it really appreciate your help thanks again and have a great safe
@@OutOnTheReef I've been in boat for years, mate. I even built several speedboats and have been connected with a couple of propeller manufacturing companies locally, when we had industries before they all eloped to China. Them and my little home boat company worked together. And a few times they tested new props on my boats at Lake Eildon (Google it) in the mid to late 80s and early 90s. That's how I happen to know many things about props, pitch, angle, etc. I still have a 1990 Salem speed boat with me. A sparkly flake silver body and a 350 Chevy coupled to an automatic transmission, 17% step up V-drive and 3 blade propeller. It's a delight to drive. I could sent you a photo if you can sent me an email address.
@@mickcarson8504 awesome Cap, you had a good expertise with boats in your lifetime, and that boat you have sound very fast and slick. I looked in your TH-cam channel and I didn't find any video on it if you upload a video or pictures to your TH-cam channel I can see it from their captain that would be awesome to see you thanks for your reply and navigate safe
Out On The Reef hey cap not sure I set my 8000 lb wellcraft with my 300 etec to run 6000rpms loaded but I run around 4800 to like 5200. 5200 is 34 mph I burn one gallon per about 3 miles max is 39 Mph my prop is 15 1/4 x 15 you might have drop diameter I think every 1/4” is 50 rpms hope this helps my prop dealer looked at my prop aluminum worn and beat said I should go with that up there and bingo hit it on money JT 🐟🐠🎣🛥🌴⛱😊😊🙏🏻🙏🏻🙏🏻🙏🏻
I think it would be cool to see videos anywhere overnighters in Florida. Catch clean and cook Miami, Keys, Tampa Bay..... just anywhere .... you have great content all the time. Keep up the great work Captain!!
I'd like to see the comparison without changing the trim. 4 blade lifts bow already and trimming up even more would not be fair comparison. That is just my opinion. In my experience, with a boat trimmed correctly, 3 blade is more efficient, 4 blade has better grip for better holeshot.
Out On The Reef Loved that boat!! I bought it barely used, and the only reason I did was b/c it had the (2) 260s. Most of these boats came with the 454s.
I prefer a 4 Blade on my boat mostly because I’m fat and I usually have a lot of weight on the boat so I need more bottom end than top. Plus I do some tube towing and such so it needs to get up and moving quicker.
Saludos Capitan!!! Espero esten bien todos!!! Eataba viendo uno de sus videos sobre la caña y reel Penn nuevo. Es muy importante que se compre una balance pequeña de mano para que pueda ajustad el freno ( drag) de los reels. Estos Fresno's deben ajustarze para que el freno libere o suelte linea cuando se le aplique el 33% de la capacidad de peso de la linea. O sea en una linea con un test de 40 lbs. Adjusted el freno para que libere linea mas o menos a 13.2 lbs. de pull en la escala de la balanza!!!! De esta forma es bien poco problable que la linea se parta!!! Si quiere le envio foto de la balanza de mano.
Tremndo si la bara bino con un rench pequeño para acer ajuste. No abia prestado atencion a eso ,muchas gracias por ayudarme a entenderlo, capitan ,y saludos de Florida 🖐🖐👍⚓
I went to a 4 blade on my 22’ sport runabout..... for kids tubing and adults cruising it’s the best hole shot and mid rpm economy I can get .... both my fishing boats are getting 4 blades too.
Out On The Reef Yessir I forgot to mention I went from a 23p 3 blade to a 21p 4blade . My intention was to gain the low-mid speed acceleration and economy as I’m not much of a WOT guy . My rpm increased with 4 blade at any given speed but , my gph went down at cruise speed . Thx for the reply Cap👍
What was your difference in hole shot? I just recently got a 4 blade not installed yet because with 3 my hole shot sucks especially with more weight in the boat. 24' Baja. I cant wait to see how the performance will be with the 4 blade.
I don't remember captain, but with the 4 blade propeller. You'll get more miles per gallons At mitt range, but at high speeds You will lose speed due to you. Don't get your full RPM out of the engine.
Very nice you’ll definitely save a lot on fueling in traveling there. How did the 4 blade handle with the auto pilot on? Did u notice that u have to add anymore trim or was it tracking true? All in all that’s great news captain can’t wait to hear how much it saves u on your fuel consumption. Safe nav captain
Before even watching the video I can tell you I used to fly model planes with a couple guys who were engineers. They would experiment with one bladed props and a counter weight. They told me that they were more efficient than the two bladed props and had success with it. I can see that the fewer the blades the less resistance you will have making your "screw" more efficient.
Great info Frank and it makes a lot of sense thank you so much for your great input of experience. And it's true I feel a little drag more than normal and vibration in the motor because of the extra blade check out my 2nd test that I did on the next video and you'll see my results
I was always told to drop 2 pitches down when going from a 3 blade to a 4. That would bring your max engine rpm up too. Plus stronger acceleration as a bonus.
thanks cap but this is the smallest pitch propeller they had😂
I am running a Yamaha 90 four-stroke and I need more torque very badly. With the three blade, I have gone all the way down to a 13 pitch to try to get more jump out of the hole, but now I'm hitting the rev limiter. I think mine is a 13 and 5/8 by 13 right now. What would you recommend for me if I step up to a four blade?
@@OutOnTheReef
@ffdparker1 You're having the same problem that I'm having captain.It is the weight of cargo and fuel is lowering my R.P m's So when it comes to that So when it comes to that sometimes you need to get more horsepower Or you could be lucky and get a good size.Propeller but I don't know wish to recommend new captain
Maximum rpm of 5100 RPMs is really bad considering that you’re in a lake and a pretty light load not a Bahamas load you should keep that in mind. To reach the proper RPMs you would need to go down on pitch like three pitches.
very true cap. what about mid range is ware i navigate ?
@@OutOnTheReef Always prop correctly for WOT to get the correct load for the engine.
Back in my boat racing days, we'd take several props to the lake and test them. The 4 blade is the correct type for your boat but I'd take 3 or 4 props at 2" pitch intervals in order to get the rpms close to 6k. Dropping 1 or 2" pitch might get your speed up a little as well as maintain mpg and on-plane time. A good dealer will let you try several props and allow you to purchase the one that best suits your application.
great suggestion cap and yes increasing the rpm would be better ,but my question is at mid range you thing i will get fuel economy?
@@OutOnTheReef I believe your mid range economy will be as good or better than it is with the 3 blade. This is why testing multiple pitch/design props are imperative to getting the best prop for your application.
@@curtis-thebicentennialist1776 great suggestion captain, will do that in the future👍👍
This is the best advice! Wide-open throttle your RPMs need to be higher. Closer to the recommended max RPM labeled on the side of the motor
@@hemipower63 thanks cap. Is great advice
Sounds like you could have reduced the pitch on the 4 blade a bit.
I agree but they don't have any smaller size than the one I have right now
Of course a boat running at a higher rpm will consume more fuel. You need to get the engine running at the same rpm’s in order to determine data, unless your motor cant turn a 4-blade prop at 5700rpm. All in all, a good effort to compare the two though. Keep at it, Cap.
Very true captain ,i will test this prop at a chop to see how the perform .
Thanks for the input cap.
@@OutOnTheReef
The 4 blade seems not ideal. Of course we have to know what the load on board is.
If it's half loaded then the 3 blade suits better.
4 blade @ 5100rpm (full throttle), with the outboard's optimum range of 5000-6000rpm and half loaded boat, seems quite a bit low and will result in engine problems at some point.
There are some excellent little programs on the web and in forums, to help you out, by entering some basic data of the boat - outboard - weights etc. they give you a reference at what prop should be used.
@@hayios0 so captain what do you recommend from your experience?
@@OutOnTheReef
So many variables. Does the boat comes to plane easily with the 3 blade?
Do you use the trim and/or flaps correctly?
The Slip of the prop...etc.
@@OutOnTheReef
Some rough calculations show that the Slip of the 3 blade is 12%, which is crazy high at Full throttle. Looks the correct prop is the 3 blade but different pitch or diameter, let me check again
Try a 3 blade 20-21 pitch, or 15" diameter and see if the (otherwise optimum) rpm drop drastically, if not, then your slip will be reduced so consumption and your engine will work more efficiently.
Good job Bro, may bien! It helped me decide to switch to 4-blade props as top speed is NOT a priority but fuel savings and better handling is!
Thanks cap. Saludos And remember you may need a smaller pitch since you're getting more thrust
You need to drop one to two pitch sizes when switching from a 3 blade propeller to a 4 blade propeller and by not doing this your engine will struggle with achieving the correct RPM. A 4 blade propeller is good for cruising, but you will lose top end speed.
thanks Steward you are right but a smaller pitch was not available cap.
The props shown on your video are different pitches than the links you provided. My understanding is when going to 4 blade you should add at least 2 pitches to compensate for the additional drag. So for me I’m considering going from a 3 blade 3x16x20 to a 4x16x22. That should keep me in the same RPM band. Your 4 blade actually had fewer rpm’s at WOT and appeared to be at the bottom of the RPM band. What were the pitch and diameter of your 2 test props. Thanks.
hello cap they did not have a smaller pitch cap that's why i went for a bigger prop
Great test Cap. When I test props, I always test it with full fuel and a load that corresponds to 2 person. I usually pick the prop that reaches the mid range between low/high WOT rpm limit f.ex. 5.500 rpm within the limit of 5.000-6.000 WOT rpm. In your case, I would pick 1" lower pitch so your WOT rpm could reach close to 5.500 rpm. I really looking forward to your next trip to the Bahamas and see your fuel usage. Navigate safe.
Great point! captain i agree,thanks for your comment.
I AM KEEPING MY THREE PROP, i have a smaller C.C. FISHING BOAT. GRACIAS..... MY FUEL EFFICIENCY IS JUST FINE,. I only go out 65 - miles, i do not plan on going to the Bahamas... lol LOL gracias
Thanks for sharing cap and yes the bahamas is a longer trip
Hermano, you are solo? During Covid? Why are you wearing the Bandit mask? Also do you need your ACR personal Locator Beacon, strapped to your vest? With Land All Around you? I am sure you have cellular signal service. i like the comparison..... GRACIAS.
hello cap and is all needed cap y muchas gracias por ver mi cannal saludos
Ehh nothing wrong with swapping a prop on the water. I think it would be preferable to have a buddy on board just in case you know something unexpected were to happen. Personally I run a 3 blade stainless ballistics prop with a hub saver kit on my 1995 20 foot Sea Arrow center console inboard with a Volvo Penta V6 4.3 liter mated to a OMC SX out drive. The motor was rebuilt and a bigger cam was put in and a bigger carburetor. A 4bbl Holley 4160 600 cfm carburetor.it bright it from it's original 190 HP to 225 HP. It also sounds pretty good you can hear it on my page in my videos if you care to look. I can't remember the exact torque off the top of my head I'd have to dig out the build sheet . My main cruising rpm is usually between 2700 rpm to 4250 on the higher end on average. At about 3800 to 4000 rpm I run about 30 mph depending on the conditions. Wot is recommended 5000 rpm and I run 45 to 50 depends on conditions again. But I don't run at that rpm often. I Only run that if a Storm is coming or I need to get in for an emergency or in a hurry. Or sometimes just for fun but top speed isn't a huge concern with me . I pack quite a bit of gear and keep some tools and a spare prop and my anchor things like that . I have also added 2 batteries from the original 2 . Then installed an audio system and lights, but basically I have probably added a good estimate I'd say 350 ish lbs of extra weight . That's not including fishing gear and people food and a full ice chest . As far as people usually it's either me and my wife or us and our 3 kids or us and another couple. At max I prefer 6 people just for the comfort level. I have noticed out of the hole it's a little slow to get on plane especially if the boat is heavy in the back . And depending on my load it has a hard time on plane as far as maintaining a good plane at lower speeds. The boat is rated for 10 persons plus 250 in extra gear. So I'm well within weight safety. And it's not a huge problem persay just a noticeable one . I'm ok with sacrificing a little top end speed for a better hole shot and slower and better planing ability at lower speed. I feel like a 4 bladed prop would be more suitable to what I desire . Would you agree givin everything I have mentioned? I have looked up compatible prop options and found a 4 blade with the correct diameter and pitch so I know mechanically it would be ok but do you think I would get the results I'm looking for ?
Wel cap. Is you find a smaller pitch because in my case i couldn't find anything smaller i would love to get something smaller, but you should try it , and find a company that accepts returns that wold be the best way , i hope the best for you cap.
youre badly propped. get a yammy 3 blade semi cleaver instead. solas is junk. you need to get 6K rpms.
Thanks cap. I have some results on open sea on the solas 4 blades fully loades and did not perform well, soon i upload the results ⚓👍
3-Blade Propellers
Higher top speed: 3-blade propellers generally have a higher top speed than 4-blade propellers.
Better acceleration: 3-blade propellers also have better acceleration than 4-blade propellers.
Less drag: 3-blade propellers have less drag than 4-blade propellers, which can lead to improved fuel efficiency.
More efficient at higher speeds: 3-blade propellers are more efficient at higher speeds than 4-blade propellers.
4-Blade Propellers
Better handling: 4-blade propellers provide better handling and stability, especially at low speeds.
More grip in the water: 4-blade propellers have more grip in the water than 3-blade propellers, which can be beneficial for boats that are used for towing or carrying heavy loads.
More efficient at lower speeds: 4-blade propellers are more efficient at lower speeds than 3-blade propellers.
Great point and awesome information cap. Thanks for sharing
Your not done yet captain. You need to show a prop shop those numbers and have them get your RPM’s up again
captain i agree,thanks for your comment.
Every boat is different and every boat has one perfect all round propeller.
Experimenting with cheaper aluminium props then finally pimping prize prop with its stainless counterpart.
thank for your comment cap
I concur with what most have said about too much pitch on that prop. Your engine is not at its HP potential at 5100 rpms at a very light load. You may see the reverse of what you want when you are loaded for the Bahamas. I would take your prop and numbers to a reputable prop shop and see what they say. In many instances, they can change pitch a size or two with your prop. Keep us posted capt!
you are so right cap . the dont have a smaller propeller on this brand ,thanks for your great suggestion cap.
@@OutOnTheReef Get the box tuned at a profrssional shop.
Like the 300hp you get +30hp an lots of extra torque. That would compensate the prop and the fuel economy. ;)
I had a Mercury Vengence 14 x 19 and my max speed was 45 on a good day. Most of the time 43mph. It would also loose speed in turns when pulling a tube. I tried a 15.5 x 17 3 blade and it caused vibrations. I switched to an Apollo 14.25 x 19 and the boat felt sluggish getting to top speed. The Apollo has a lot of cupping. Hole shot was ok, but after that took forever to hit 40. I got a Solas HR4 14 x 17 4 blade. Hole shot was fantastic, on plane 3 seconds and got to 40mph much quicker. Top speed was about 45mph at 4700 rpm. My boat is heavy being a 99 Sea Ray Sundeck 240 with a 5.0. Also pulling tubes, no problem for the 4 blade. It doesn't slow down in a turn. Just set it to the speed you want and leave it. In smooth water I bet it will hit 47mph and a light load. But like others said, you are over propped at 5100rpm. You could try a better blade like the Merc Revolution.
You're so right about that Captain when I purchase my boat it came with a Yamaha propeller same size as the Solas 3 blade that I replace a long time ago and the Solace did a lot better because it had less cupping since I have more weight the solar excellent , thanks for the great info I will put it to the test in the future👍👍🏝
Here is the latest test of the Sharrow propeller.
th-cam.com/video/MNnB_50Z20I/w-d-xo.html
Impressive performance, but very expensive.
i saw it but they don't have them for sale yet cap, can wait to test one👍⚓
Where I am, we usually don't have many days of slick, calm water. I have a 24ft with twin 150s. I went from 3 blade to 4 blade. What a difference! When fighting swells or strong current, I have a lot more torque to push through.
I try not to run more than 2/3 throttle as it makes a big difference in fuel consumption with 2 strokes.
that is a awesome boat with twin engines cap. that was what i was looking for cap. since my boat is heavy too. navigate save cap.
Were they the same pitch, usually in my experience dropping the pitch on the 4 blades produces better results
I would like to do that but they don't have a smaller pitch on this propellers
In my experience, dropping the diameter by 1/4-1/2” and keeping same pitch provides best cruise rpm for fuel
Now that you got the four blade, go catch some lobsters and cook them up....
lol that is in my mind😉👍
Another thought on pitch. If a lesser pitch is unavailable, check with a quality prop shop like FJ Prop Miami to see it they can make an adjustment. Back in the day I was with Pitman Photo Offshore Racing and for a while Mercury supplies our engines so they could test engine mods on our boat. There prop guys, Dennis Cavanaugh, actually in Fond Du Lac would adjust our props to fit exactly what Mercury wanted. It’s definitely possible and probably not that expensive to have done. Sorry fir the long comment. Great video by the way.
Thank you Mike I really appreciate your help I know it comes from the heart and thank you for your experience and you're right A lot of my viewers like you has been telling me that once I put a load on the boat it's not going to perform and I just proved it yesterday I'll make a video to show you what happened with the load on the boat with a 4 blade prop Peller it's definitely over pitched.
Thanks for your help and great Comics captain
Why would anyone thumb down,honest review?Nice vid captain...
lol is just haters that love to watched my channel , thanks cap.
You need to test a 4 Blade with less pitch so your RPM will rise to correct, those 4 Blades are not letting you get to the correct Max RPM.
if i do go down on pitch will i lose fuel economy cap?
@@OutOnTheReef there is a fine line, I would not change it, with the fourth blade you are adding more thrust at the cost of top end speed and more control at mid range
@@michaelhuddle1134 very true cap, and that what i need it for 😉👍⚓
@@OutOnTheReef At WOT the engine should be spinning the Max RPM, if it doesnt reach it its over Proped. Engine is being restrained. Call Yamaha and verify. 5700 is Max RPM on that engine?
@@frankmelero5511 they told me engine should be 5000 to 6000 Rpm but i was in the lower range, whats your opinion on that captain?
I run a solas rubex hr4. Will never go back to a 3 blade. If solas makes it. Drop another pitch or two on the 4 blade. You are at the very low end of wot.
you thing if i do go 1 to 2 pitch smaller i will lose fuel economy ?
Out On The Reef I don’t think so. It will make it easier for the engine to push the boat and with gear full fuel water for your trips I bet it wont even reach wot on the current prop.
Out On The Reef you burned less gal per hour because. 4 blades slip less. 15% vs around 25% for a 3 blade. Now pitch needs to be dropped do you can reach top end of wot empty. Fully loaded it will run in the mid range of wot. Just like a 12 speed bike. Need the right gear so at wot its super easy to turn.
@@thisismyalt9010 very true Captain thanks for the input really appreciate it
@@thisismyalt9010 great info I will test it with full load and all gear to see what it does and if it doesn't perform I will definitely go down to pitch
Thanks cap.
Esta comparacion no es ideal por que son diametros de helice diferentes, debes realizarlo con el mismo diametro y paso y se obtendra resultado diferentes
Muy cierto capitan pero no pude encontrar otra prooella mas pequeña que la que mostre, gracias capitan
Like I said you'll love it!! I don't go to the Bahama's, but I do go to the Islands in Lake Erie which is just like going to there just NOT as pretty lol
yes the lake Erie haves waves like the sea at some times and that why you know what i need ,thanks cap. and be safe.
Have you ever done a video showing optimal trim versus economy?
No i haven't cap.
Hi Capt... this is great information. I think a lot of us would benefit by changing props. I cannot change my prop from on the boat; I'd need to be in the water or on the trailer. It's easier for me to be in the water... I see below there are some who recommend a lower pitch; it would be nice to have access to multiple props to get try them all out. But, buying a large variety of props would be expensive. I've also been thinking about raising my engine about an inch as the anti-cavitation plate is under water when I'm running on plane. It measures out to be correct when out of the water, but runs a bit bow high unless I use the trim tabs..... Thank you for the hard work it took to put this video together!...
yes you are right this propellers are well over $300 and we can buy multiple pitch ,but since i go mid range this will really get my bow down and fuel economy, and i do see your problem about changing the prop being on the boat, but you can go to the shallow ware is calm and be in 2 feet of water no problems ,and do it on summer time before winter comes lol.
thanks for you comment cap.
Useless comparison with out mentioning their diameter and pitch 🤦🏽♂️
You're right sorry Captain I place the link in the description below if you want to see the diameter they're both the same diameter and pitch
So you used the same pitch for both the 3 and 4 blade prop? Aren't you supposed to go down a pitch when going to a 4 blade prop?
Yes it is recommended to go down 2 pitch but they dont sell 4 blade prop smaller😔
And i look all over cap
hi captain, yes you lost 2 miles at 5100 rpm and saved some gallons but check what the recommended RPM for your engine to determine the pitch size for the 4 blade propeller. you have lost about 700 RPM which means the engine is below the recommended RPM range . navigate safe captain .
they toll me that my rpm range is 5000 to 6000 RPM recommendation
Out On The Reef ok i would go for lower pitch just to gain some RPM so i dont have and doubt good luck and stay safe captain
Changing from a 3 blade to a 4, I definitely had more bottom end torque (Have the 4.3 inboard). Great for water skiing. The good news, going to a 4 blade helped me with my WOT. I no longer have to worry about blowing the engine since WOT hit exactly 200 RPM below my redline at a perfect pitch. Top end speed was the same at 55 mph. Could go faster with the 3 blade, it would just blow the motor. Dropped the RPM down dramatically helping fuel economy at cruising speeds at around 30 mph. Happy I made this change!
It sounds like you had an awesome result and yes the 4 blade propeller has a lot more Surface Pro works a lot better it all depends would you load also in my case after I place all the load and Fuel my performance went down.👍🤙⚓
I should had emphasized a little more on my props. I switch from a 19 pitch 3 blade alum. to a 21 pitch 4 blade alum. on my Alpha 2 outdrive. I tried a 23 pitch 3 blade but if felt like there was too much load and it took more time out of the hole shot. So I tried the Solas alum. 4 blade and it was perfect. More torque for sure, but my guess is it kind of acts like a 22 pitch 3 blade that don't exist???
@@itscorky yes sometimes you cannot find the proper pitch and they don't sell them and don't make them.
That's why it's hard to find a perfect propeller
Had a good read of the comments, know nothing about the difference between using a 3 or 4 blade prop. So thanks for taking the time to do this. EIRE.
Anytime Cap. Make sure your RPMs by chasing your propeller from 3 to 4 don't go down too much lower the pitch at least two pictures on the four blade
I seek knowledge. I have a 2007 25hp Yamaha 2stroke. My propeller size is 3x9-7/8 x 10-1/2 based open this size what prop would anyone recommend to give me the fastest speed and the number of blades? Thank you in advance
i hope someone here can help you with your question Chris
Not the proper pitch on the 4 blade. Need to go down 2 or 3 to get into proper rpm
Very true captain but I could not find a lower pitch than the one I bought
you don't have the right pitch on your 4 blade prop.
Yes you're right captain but I did not find a smaller pitch than this 1 on a four blade
Wot at 5100rpm means it's overproped .
yes very true cap i need smaller pitch 👍⚓
You need to change the pitch on the 4 blade to be at 5,700 + rpms. You are lugging the engine at 5100rpms. If you add 4 people and gear you will be at 4800 rpms. Bad test because you propped the pitch wrong. The 4 blade should be a 13 pitch.
14 1/2 15 pitch is the smallest cap, thanks for your comment .
Great test, it would be a nice comparison to see how the PowerTech 3 and 4 blade props perform against Solas.
Great suggestion! cap.
I just replaced the prop on a fresh water runabout. The only prop in stock was a 4 blade. I decided to go with 4 blades because a lot of time is spent manuvering around other boats in the marina and also docking to a houseboat. I found that the four blade prop gave me way more control at lower RPMs. Even reverse was noticeably improved.
Yes I agree at lower RPMs you get huge control of your boat that's what I noticed and this application👍👍
Nice Prop Captain Bimini opens up July 1st so you can see how it does in the open sea
thanks cap for the information cant wait to go
Why compare the 2 if the pitch wasn't the same?
extra blade more thrust👍👍
You need to add 2 inches of pitch to the three-blade to make it a fair comparison. Your results will be much different!
Thanks Jim 👍
What is the face mask for?
Thank you for the great video. Wide open throttle RPM decreases by 600 RPM. Is the 5100 wide open throttle with the 4 blade within range for your engine. Any thought of reducing pitch slightly to achieve the same WOT RPM or is the 5100 acceptable?
Yes the pitch needs to be reduced because once I load up the boat with all Fuel and all my equipment it's going to be hard to get back on plane so definitely the pitch needs to be reduced at least two sizes
I can't wait to watch your next trip to the Bahamas with the New 4 Blade Propeller Capt. Be Safe & Take Care!!!
me too cap. thanks for watching Besim
Hello! Do you think a 4 propellor blade will pull a wakeboarder faster/stronger out of the water?
Example: pulling a person of 65kg out of water is no issue. When trying with a person of 80kg it has not enough power.
Hello cap. In my case i saw more power at take off but at top speed was reduced and also you have to see how your rpms react is very important not to strain the engine cap.
Too much pitch on the 4 blade for the engine.
yes i found that out wen i fully loaded the boat cap👍⚓
When the music cut off and he turns to us. “ i know your not suppose to be doing this
Awesome test Cap great drone shots. You could actually see the 4 blade get more bite of the water to launch you. But I will have to agree with other probably more knowledgeable commenters and if it were my boat I'd want to see a few hundred more rpm at the top end to have a happier engine when you are full fuel, full water, full provisions. I don't know outboards but not being able to hit max rpm on a diesel under light load is a big no-no.
Thanks for the tip Bob and you are right cap.
Yes your RPM was too low on the 4 blade. Drop down an inch or two on pitch to get the rpm up to 5800 if that is your motor's max. Speed will go up too.
You are 100% right, captain. Thank you so much for your recommendation and I sure will try to get another one.
I don't think you mentioned whether the two props were the same pitch...and the same diameter. We have to assume they were and you forgot to mention that.
yes they ware im sorry i forgot , that was important 👍👍
@@OutOnTheReef Well...great! That was a very good test. I had a SS 3 blade prop on my 115 HP Yamaha OB for years. Somewhere along the line I learned that the fewer the blades...the better. You showed that information was not correct. The science of boat propellers is quite complicated. Check out the video I've included here: th-cam.com/video/Of1RY4M8VqM/w-d-xo.html
@@sunking2001 Thanks captain for the video and yes 4 blade propeller gives you more thrust but takes away the high speed
Why do you have a mask on all by yourself on the water out in fresh air. No Chinese corona out there..... I think the important thing to look at is whether or not the motor is operating within its factory RPM range at WOT with the 4 blade on it before I deemed it as a viable choice. You are not comparing apples to apples unless the 4 blade is turning the same RPM's as the 3 blade.
Yes you're so right Captain but they don't have a smaller pitch on this propeller for my boat so this is the smallest that I can get
Very helpful. I bought the same prop. Cupped 14.5 19. 19 ft cuddy. 5.7 w 4bbl. Not trimmed 44 mph on GPS. 3 men n all our fishing gear. Out of the hole in a heartbeat. 3 blade. Fuel at 5 grand. 1 gal a mile. Terrible...
Awesome Dave the 4 blade is alot of more power for your boat.
Thanks for your comment 👍👍
Did you go down in pitch?
no cap that was a problem wen i loaded the boat with fuel and gear i should have gone 1 pitch down ,thanks cap
nice comparison! i never had 4 blades on my boat but i always thought 4 blade would be better. Now, after watched your video. the 4 blade is off my list. thanks for the video!
Thanks for watching!
Capt, you are not reaching Wide Open Throttle rpms for that engine. If I recall correctly you should be getting over 5600 rpms at WOT. By not reaching the RPMs your engine is working a lot harder to reach the rpms not to mention that you are not getting the HP rating for that engine. If you add to the equation a full fuel tank, water, food, and all the supplies you bring to the Bahamas you could very well get stranded or worse. I had a 23’ Robalo with a 225F Yamaha that came with a 4-blade prop and I had to switch to a 3-blade. The change was incredible, specially at hole-shot. Fair Winds!
Thank you so much Captain for your gray suggestion I will keep that in mind definitely and do more research and see how can I help the performance of the boat thank you for your comment👍👍⚓
Did you drop the pitch for the 4 blade? You're supposed to drop down in pitch from what you had on a 3 blade if you switch to 4 blade. I'm using a 4 blade and absolutely love it in sloppy conditions.
I didn't get a smaller pitch because they do not sell it the smallest they have is what I got now but I know I should have went smaller a little bit at least two pitch
You are way overpropped. Engines should always be propped to turn max rpms. If you don't turn the max at full throttle you are over working your engine and missing out on better performance
that is very true captain ,the problem i have is hard to find a 14 1/2 15 pitch
Remember that the fuel flow displayed on your screen is a average according to your rpms. So the engine might actually be burning more fuel because it is under alot more load
very true but the same affect will happened to the 3 blade propeller
@James Konakowitz yes cap. Same speed lower rpm
I agree need to get the rpms up. The 4 blade was on the motor when I bought it. But do have the other 3 blade but never tried it. As a coparision 3 blade is a solas 14.8 x 17 pitch, 4 blade is a 14.5 x 15 pitch. Guessing that why my rpms hit 56 to 5800 rpm. It's down 2 degrees in pitch. I am by all means no expert just what It does on our yama150 on a 20 foot dc. Think it weighs close to 4000lb loaded( 75gl fuel) give or take 100 pounds or so.
5600 - 5800 IS PERFECT
Whe are going back to Bimini???
Nope cap. Only once they take off the stupid Covid test , this is ridiculous and im not supporting it
3 Blade 14.5” Dia has a heap less surface area than 4 Blade 14.5". A fairer comparison would be to a 4 blade 13.5". If your Yamaha has the torque to run the bigger 4 blade prop, thats great , but you could have also saved some cash just put a 15.25” 3 blade on it and got the same effect.
very true cap but i could not find a 13.5 any ware looks like they don't make that size and i looked every ware cap.
You should try lake George and silver Glen springs run by boat. Is our local Bahamas! Water is colder and clear as tap water. And flushes your engines. We live the Bahamas and the springs. Keep up the good work!
those are great waters cap ,i always flush at the lake
So what's prop would be best as a towboat
I would think for a towboat more torque on thrust with the four blade.
That's just my opinion
Hello, question what pitch are you useing on your solas 3 blade prop,I have the same boat motor combo and want to compare?
Right at this moment I have a 3 blade 14 1/4 14-pitch but the reason I went down to that is because I added a Minn Kota trolling motor and there's a lot of weight on the boat so my recommendation is see how much your boat weights and how much gear do you have added on to it that would reduce your performance when it comes to RPMs
@@OutOnTheReef I’m useing a Yamaha reliance 14 1/2 x15 and im only getting 52 rpm a and 35 mph wide open,I think I need to go down on the pitch, do you have any recommendations?
@@hiroller27 the thing is that it's hard to find a smaller pitch , I talked to, and they told me that each tits you go down it's like 200 RPMs and I had the same problem with my pilot house that's why now I use a smaller pitch I use a 14 pitch which gave me 200 to 300 RPM more
@@OutOnTheReef can I ask were you found you 14 1/4 14 pitch prop? Cant locate any that small.
Is 5100 RIPM’s enough for WOT? Shouldn’t you be at 5,500 to 6K minimum?
yes the RPM need to be higher like 5500 a smaller pitch would work better
No sabia que existían elices de 4 aspas
si capitan tienen mas torke pero si tienes mucha carga te puede bajar los RPM
Was both Props the same Pitch ?
yes i needed to go smaller on th4 blade but it was not available cap.
1st class comparison test!!! I just changed over to a four blade on my boat and it really improved the perfromance.
awesome and how did your rpm ware affected Cap?
Well I just saw the prop video and I said make sure you get to 5000 rpms and you did so all is well but can be tweaked a bit and you had some good advise given to you from the comments I see and yes a little adjusting on pitch with a full load will get you there , I knew you were going to like the results either way so enjoy the 4 prop because I do ..
Glenn So Cal.
very true ,thanks you captain for your great comment and support 👍
Seems to me that if you have a lightweight boat, 3 blade may be better, but for a heavyweight boat, then a 4 blade would be better.
Thank you captain. I just needed to lower the pitch off the 4 blade propeller To increase the rpms
If you cannot get less pitch go down in diameter a bit and see what is available in pitch,also there are many options from other manufactures.It is a must that you prop to get full rpm or you will damage the motor.
Thank you Captain for the awesome suggestion i will look into it⚓⚓👍
Hi captain quick question I live in Houston Texas we wanna do a 5 day vacation in Florida I have a 4 year old son me and my wife we want clear water and get an Airbnb what part of Florida do you reccomend
hello Emre the best waters are in the Florida Keys amazing water, but if you dont want to go that far down Sarasota Marco Island , Naples are moderate looking waters, but if you want the tropical island feel ,the Florida keys will decently will do that.
hope you and your family have a awesome time here at my home base Florida.
safe travel cap.
Another great video Capt.! 2 questions what is the computer display you are using and how heavy is your boat, roughly?
thanks cap. the computer display it came with the engine from factory and the Crooked PilotHouse with my equipment is about 4800lb
Hey Captain, when next you take a trip to the Bahamas, you should compare your data on rough waters vs flat waters. It would be interesting to see the difference. Take into consideration the extra weight when you travel. Stay safe.
i was thinking the same cap ,rough sea every thing changes
If you can't return the prop a prop shop
might be able to reduce the pitch by
maybe 1" That isn't enough but if the
engine is deep enough they can cut the diameter a small amount
Also mounting the engine higher
on the transom will increase rpm.
Pitch measurement is not in degrees
It is in inches. The number represents
how far the prop would advance in one
revolution thru a semi solid like Jello
William does another awesome idea I didn't think of that part of cutting the blade in a machine shop I will look into it thanks for the great suggestion captain🤙👍
I have a 2 blade, 3 blade and 4 blade. 2 blades are preferred for racing, 3 blades are also for racing but excludes drag or hydropower racing. The 3 blade props are mostly prefered for fast boats to larger cruiser. Whereas the 4 or 5 blades are for heavy workload and vibration-less thrust. As I have a 125kph speed boat, I use a 3 blade. I used a 2 blade and did not go well for a 4 meter Salem ski boat (could pull only 3 skiers whereas the 4 blade did so without loss of speed poerwer by its Chevy 400ci engine. Bigger boats with bigger engines require bigger props. The selection of blades depend on the tests to get maximum thrust and speed to what the engine can cope with.
Excellent information captain
Thank you so much for spleen to me and detail so I can understand it really appreciate your help thanks again and have a great safe
@@OutOnTheReef
I've been in boat for years, mate. I even built several speedboats and have been connected with a couple of propeller manufacturing companies locally, when we had industries before they all eloped to China. Them and my little home boat company worked together. And a few times they tested new props on my boats at Lake Eildon (Google it) in the mid to late 80s and early 90s. That's how I happen to know many things about props, pitch, angle, etc. I still have a 1990 Salem speed boat with me. A sparkly flake silver body and a 350 Chevy coupled to an automatic transmission, 17% step up V-drive and 3 blade propeller. It's a delight to drive. I could sent you a photo if you can sent me an email address.
@@mickcarson8504 awesome Cap, you had a good expertise with boats in your lifetime, and that boat you have sound very fast and slick.
I looked in your TH-cam channel and I didn't find any video on it if you upload a video or pictures to your TH-cam channel I can see it from their captain that would be awesome to see you thanks for your reply and navigate safe
Hey cap every pitch you drop you gain 200 rpm you might need to drop 4 pitches JT 🇺🇸🇺🇸🐟🐠🎣🛥🌴⛱😊😊🙏🏻🙏🏻🙏🏻🙏🏻
the dont sell anything smaller then 15 pitch ,you thing if i run it at mid range would i damaged the engine?
Out On The Reef hey cap not sure I set my 8000 lb wellcraft with my 300 etec to run 6000rpms loaded but I run around 4800 to like 5200. 5200 is 34 mph I burn one gallon per about 3 miles max is 39
Mph my prop is 15 1/4 x 15 you might have drop diameter I think every 1/4” is 50 rpms hope this helps my prop dealer looked at my prop aluminum worn and beat said I should go with that up there and bingo hit it on money JT 🐟🐠🎣🛥🌴⛱😊😊🙏🏻🙏🏻🙏🏻🙏🏻
@@hookednrolling2009 awesome Captain world really consider that and I'm always cruising at mid-range anyway
Less blades means more top end. Unless your running Arnson surface drives they have multiple blades
Very true thanks Dan for the info captain
Buena comparación el acción 👍muy buena 👍🇩🇴🇩🇴saludos
muchas gracias cap.
1st, awesome boat! Love them shamrock style boats. Great video, I’m in a bass boat and looking for a prop for when it’s several people & not just me
Awesome captain and thank you for watching cap.
I think it would be cool to see videos anywhere overnighters in Florida. Catch clean and cook Miami, Keys, Tampa Bay..... just anywhere .... you have great content all the time. Keep up the great work Captain!!
Cool idea, im doing some improvements now but i will soon cap ,thanks😉👍
I'd like to see the comparison without changing the trim. 4 blade lifts bow already and trimming up even more would not be fair comparison. That is just my opinion. In my experience, with a boat trimmed correctly, 3 blade is more efficient, 4 blade has better grip for better holeshot.
exactly at mid range a 4 blade prop is better but not at top speed you are right about that, im realy interested on mid range
I wish I knew that when I had my 28 foot regal cabin cruiser With a 350 IO on it. That sucker used to burn 19 gallons a hour on a minimum plane.
yes cap. this could help you , but we all are learning and yes your 28 Regal is a heavy boat
19gph?!?!?! My old SeaRay 300 Sedan Bridge (heavy boat) w/twin 260s didn’t burn 19gph
@@michaelrutledge7048 that is not bad cap. For a big boat
Out On The Reef Loved that boat!! I bought it barely used, and the only reason I did was b/c it had the (2) 260s. Most of these boats came with the 454s.
@@michaelrutledge7048 that sounds like a great choice cap.
You should have put the pitch and size either on the name or description..not to have to go to amazon
You are right cap i did forget to do that, thanks for letting me know ⚓⚓👍
looks like the 3 blade is best for you especially on the rpm side . But should always do this in you normal load setting
that is very true Moto ,i will give it atest fully loaded cap. thanks for watching.
I prefer a 4 Blade on my boat mostly because I’m fat and I usually have a lot of weight on the boat so I need more bottom end than top. Plus I do some tube towing and such so it needs to get up and moving quicker.
Lol I. Fat to.
great video and exelent data just one question diference in time getting on plane? my boat has a 3 blade and take foreever to get on plane
the 4 blade gave me faster plane i think about 20% more out of the hole shut
Saludos Capitan!!! Espero esten bien todos!!! Eataba viendo uno de sus videos sobre la caña y reel Penn nuevo. Es muy importante que se compre una balance pequeña de mano para que pueda ajustad el freno ( drag) de los reels. Estos Fresno's deben ajustarze para que el freno libere o suelte linea cuando se le aplique el 33% de la capacidad de peso de la linea. O sea en una linea con un test de 40 lbs. Adjusted el freno para que libere linea mas o menos a 13.2 lbs. de pull en la escala de la balanza!!!! De esta forma es bien poco problable que la linea se parta!!! Si quiere le envio foto de la balanza de mano.
Tremndo si la bara bino con un rench pequeño para acer ajuste.
No abia prestado atencion a eso ,muchas gracias por ayudarme a entenderlo, capitan ,y saludos de Florida 🖐🖐👍⚓
I went to a 4 blade on my 22’ sport runabout..... for kids tubing and adults cruising it’s the best hole shot and mid rpm economy I can get .... both my fishing boats are getting 4 blades too.
exelent Ducan and what about your rpm because mine went down like from 5700 to 5100 ,how was yours changed cap?
Out On The Reef Yessir I forgot to mention I went from a 23p 3 blade to a 21p 4blade . My intention was to gain the low-mid speed acceleration and economy as I’m not much of a WOT guy . My rpm increased with 4 blade at any given speed but , my gph went down at cruise speed .
Thx for the reply Cap👍
Great test and I think you made a good choice. That prop will eventually pay for itself.
I think so too thanks Allen and navigate safe cap.
What was your difference in hole shot? I just recently got a 4 blade not installed yet because with 3 my hole shot sucks especially with more weight in the boat. 24' Baja. I cant wait to see how the performance will be with the 4 blade.
I don't remember captain, but with the 4 blade propeller. You'll get more miles per gallons At mitt range, but at high speeds You will lose speed due to you. Don't get your full RPM out of the engine.
Thanks for the info just placed order on 4 blade prop lets see if my setup is better gas milage to
great and please let me know your results captain👍
Very nice you’ll definitely save a lot on fueling in traveling there. How did the 4 blade handle with the auto pilot on? Did u notice that u have to add anymore trim or was it tracking true?
All in all that’s great news captain can’t wait to hear how much it saves u on your fuel consumption.
Safe nav captain
no problems with the auto pilot cap and trim tabs was not that necessary to get the bow down, thanks for your comment cap.
Before even watching the video I can tell you I used to fly model planes with a couple guys who were engineers. They would experiment with one bladed props and a counter weight. They told me that they were more efficient than the two bladed props and had success with it. I can see that the fewer the blades the less resistance you will have making your "screw" more efficient.
Great info Frank and it makes a lot of sense thank you so much for your great input of experience.
And it's true I feel a little drag more than normal and vibration in the motor because of the extra blade check out my 2nd test that I did on the next video and you'll see my results
How many inches were each propeller? (1 revolution, how far will the prop move through the water?)
Both are 14 1/2 and 15 pitch
I place both links above the description below a both propellers if you want to check them out and compare them
@@OutOnTheReef they recommend dropping 2 degrees in pitch when going with a 4 wing prop.
@@wasupfool5692 I found that out but they do not have smaller pitch
Great video captain! Hey is a win win now you have a extra prop to take on your trips just in case.
yes definitely a plus i have a spare and now better performance