Testing the new Hydrofoil to see what it does to my boat

[@CncObsession]

I have added those to 2 different boats over the years. It does scrub a little from the top as you showed but the help with planing quicker is where it shines.

[@erikhadinger7655]

The nuts and bolts that hold the foil to the anti airration plate are in backwards, Look at the directions again. Good little video though!

[@clemdoggmillionaire9914]

those bolts backwards, increases the drag considerably

[@FaithwalkerTodd]

You want them to go in from the bottom up through the hole to reduce drag. I also like it that way because I can see the threads and I will notice if it’s coming loose.

[@neilfromclearwaterfl81]

Now to play with trim settings and props. Its a balancing act to get it all working in concert. You may also need to better tune the cutout to get the motor deeper into the water. Get it all dialed in and you could double your fuel efficiency. That last few MPH usually comes at the cost of the largest loss of MPG. Simpson rules still apply to increases in speed in relation to fuel usage on planing or semi-planing hulls so for best fuel efficiency you usually want to cruise at the lowest throttle setting that will keep you on plane which should be somewhere between a bit over half to two thirds throttle. Back in the late 50's we could plane a 17.5 foot mahogany plywood semi-vee with a 35 horse Evinrude Big Twin and run all day on 12 gallons of fuel with the correct prop pitch and trim setting if we watched our throttle setting. Chine Lock and Skipping in a turn can be dangerous since you might not only toss an occupant but also flip a boat over sideways so play it safe. If your combination is prone to Chine Locking and the foil helps relieve that then indeed keep it and make the boat safer. Best!

[@jonjackinsky1002]

I’m running one on my 50hp on my 16 Klamath. Made a huge difference. For one your bolts are in upside down. I also trimmed mine after to reduce drag even more. Secondly, it would appear you have zero clue what trim is. With a fin your trim position is going to be different. In my boat it’s way more stable and corners better because it’s a hard v-nose light weight aluminum boat. Secondly with 5 people and gear I’m up out of the water and on step in 2 seconds. Lastly my top speed was about 24 without it and I’ve been as high as 32 with the fin. Again, learn what trim is and how to use it. I’d wager a guess you also have you’re outboard mounted to low or even too high maybe. It’s important that where the fin mounts to is in line with the bottom of your boat or slightly above. An by slightly I mean less than 1/8 inch. An yes, running a speed prop is going to change a lot as well.

[@gbass7328]

Slower with the foil. More drag. Raise the motor up for more speed. Lower for more foil induced control. Prop could be shorter pitch for more wot rpm. Chk motor spec.

[@jimcrowley1709]

Hydrofoil adds a lot of stability to a boat and are well worth it, but it takes a couple of miles per hour of your top end. Try this: add 1” or 1.5” spacers to rise your hydrofoil off of your anti-cavitation plate. This should give you back your top end speed if that’s important to you. Make sure your spacers are at least 5/8 diameter, so it distributes the force against the anti-cavitation plate.

[@SmallCraftCruising]

honestly, i have maxed this boat at 31mph and it is... scary.. I am very happy with a cruising speed of 15-20mph

[@patsquach4080]

Made one for my 10 foot inflatable..with a 9.9 .. .. I liked the fact that it slowed down the back of the boat from rising out of the water ,when navigating large waves … helped keep my prop in he water …and got up on plain twice as fast ….. could cruise along at about 24 mph .. before the I’d only get maybe 18 ……. I made mine out of a I/4 inch plastic plate ..20/20 inch .. drilled 4 holes …. Cost me the price of the bolts ….

[@alphacapo]

If you wanna turn and get better bite. And lift at low speed You have power trim. Just tuck the motor in a bit. No need for the whale tail thats my opinion. I run a 30hp mariner on a 16x42 trim makes all the difference. I can eek out 31mph if i trim up as for as i can. But i cant corner without blowout. So when i turn i just tuck in the motor about flat trim and i can turn full lock at wide open throttle no problem. Drive your boat. I use an 11 and 12 pitch props

[@Jmmondeau]

Thanks for the info on the foil. I always wonder how they did.

[@craigyoung3124]

A few things. As everyone said that's not a hydrofoil it's really designed to help get your boat on plane and not plow water,. works great for small motors like a 3.0 Merc. on small ski boats like a Bayliner. 27mph with a 25hp 4 stroke seems fine to me. What I really wanted to see was playing with the trim to help air out the boat to see if you can find more top end. Have fun with it and wear your life jacket.

[@SmallCraftCruising]

trim will be its own video

[@SoCalSeaChaser]

You should get trim tabs. For that boat smart tabs would probably work, or get some electric Lenco trim tabs. BTW, sweet looking boat, reminds me of my dads Glasspar.

[@SmallCraftCruising]

i am not going to put that much money into it

[@Evian1990]

​@@SmallCraftCruising and 9n a stern that narrow, tabs wouldn't leave you any room for your transducer. Love how these guys tell you what you should do, but they have zero idea what they are talking about. I really doubt any of them own, or have ever set up a boat. It's entertaining tbough haha! Great vid, thx again

[@patrickfearon7942]

@@SmallCraftCruisingto be fair, smart tabs are cheap. I don’t think you need them though. That boat is beautiful and riding nice.

[@SmallCraftCruising]

@@Evian1990 you are 100% right.. i do not think these people realize just how small this boat really is!

[@jeffjohnsisland5551]

Top RPM of 5100 with just you? What is the wide open RPM supposed to be, according to the manufacturer? Might be to large a prop.

[@SmallCraftCruising]

5000-6000 is what it says

[@leejohnson6173]

​@@SmallCraftCruising definitely on the low side with just you, for sure needs a difference prop.

[@oneninerniner3427]

Does that Szuk have power trim? Trim er up some when you get on plane. Also you might be able to raise the motor up some if your motor has additional mounting holes. You want the anti ventilation plate about even with or just a tad bit above the bottom of the boat. That way the fin would be just above and not really touching the surface of the water when on plane, eliminating it's drag, but should still work at lower speeds. Just my thoughts.

[@alphacapo]

Idk what prop he has....but it's too much pitch ....that boat needs no more than 11 pitch that will get you to the top of the Rev range and better lift at low rpm. (Up on plane at a lower speed so you can cruise more efficient.

[@javery50]

A 4 blade prop can also help with grip and stern lift. Maybe some type of trim tabs?

[@selcukdemren6983]

Hey, great video and boat. Thank you!

[@TheNymen84]

It looks as if trimflaps on the rear of the boat would do the same thing.. and if you install adjustable trimflaps, you can have a uneven loaded boat and still go straight..

[@blackhawk7r221]

For these to be effective, you must lower your motor mounting height so the hydrofoil is below the hull line in “clean” water. Only then will you feel the dramatic results. And be prepared. A little trim adjustment goes a long way. You can absolutely porpoise your bow into a wave as easily as you can get it airborne.

[@lwilliams55]

That particular is brand is hands down the best on the market... I've been running one on my bass rigs for 15 years... Been paid for many times over is saved gas. DO NOT BUY ANY of the units where you don't drill- they will not stay on your engine. Drill the1/4" bolt holes and forget about it. These SE's have a fool proof template for a perfect installation. If anyone tells you these don't work- you can bet they have never tried it. Guess that's enough said..

[@jimboha]

I found an increase in perfromance in my hole shot and cornering, as you said. I may have lost somethnig in the top end, this is less important to me. One bigger thing I noticed is an increase in my trim authority. It mde it slightly more 'touchy' but I now have increased range, so I can make bigger changes for trolling, general boating, and for towing skiers or tubes. I actually added a few washers on the front of the tail 'foil so I can get that bow down sooner if desired. I aslo have a dual-geometry 4-blade prop: I have better thrust as I transition from lower speeds to higher speeds. YMMV.

[@ronaldbertin9455]

4 strokes are always arse heavy. I have had to reverse wedge Mercury motors on Crestliner boat

[@Chanharp]

You don't really need the foil. You have 25hp and only get 5kRPM at max throttle and the boat doesn't plane. I get the same result with 20HP with a boat same bottom hull shape but overall bigger size and more weight.. You need to properly trim the motor, can give you up to 1k RPM more. Also in best case scenario, your cav plate or hydrofoil should create one line with the hull line. It being 1" above or under is not a big deal tho.

[@SmallCraftCruising]

This opinion is fairly false and you are welcome to experience the boat with and without the foil attached. You will immediately notice how much better the boat handles with the foil on it

[@patrickfearon7942]

@@SmallCraftCruisinghe is half right and half wrong. You don’t “need” the foil for power/planing/speed purposes. It is needed for your boat for handling purposes. Where is is right is that you should be getting 5800-6000rpms out of that motor at WOT. Something else is a miss. Motor height and prop adjustments might help you out greatly.

[@SmallCraftCruising]

@@patrickfearon7942 yes, i did not swap to my other prop. at sea level, i set a record of 31MPH with this setup (minus foil), but at 4000 elevation, it is not possible and i need to go down in prop. but... this is why we test and report!

[@markspahr242]

Added the 300 to my 60 hp Merc on a 16 1/2' Starcraft DC. At least 75% improved planing performance. A few less rpm is tyical at full throttle. Not a problem, as 30 mph is fast enough for the lakes I frequent. Trimmimg the motor to the "sweet spot" is the key to best performance and would think any small craft would be more stable with a hydrofoil, whatever brand you choose. 👍 🚤⚓

[@supertrzy]

Great vid 👍 thanks

[@rogerreed9768]

With that rain storm, you could have taken shelter under your sunglasses. Keep the fin on, change the prop from a three blade to a four blade and look at the pitch to keep the RPM within manufactures specs.

[@SmallCraftCruising]

those sunglass are amazing! they definitely protect me from the rain and sun and wind and shitty judgmental people!

[@kalaharimine]

Those dolphin foils are a waste of time, if you've set your motor up correctly that skeg plate will be above the water line on the plane. Have a look next time you're a passenger. You should have timed full throttle acceleration from zero to a set speed to see if there's any cavitation benefit?

[@SmallCraftCruising]

Did you watch the part of the video where I explained how much better the boat handles with the foil on it?

[@thomassnyder7605]

Is that a Norriscraft? Looks like their paint scheme.

[@murdercom998]

Those things are awesome, can get up on plain and rip

[@jamaha268]

are you trimming your engine

[@SmallCraftCruising]

yes duh

[@RecklessGenesis]

Chill dude , ​@@SmallCraftCruising

[@qt1070]

I bought the HydroSheild. And removed my Whale tail. It’s night and day diffrents.

[@peskacnmi]

What kind of sonar are you using that you can still read the bottom at those speeds?

[@SmallCraftCruising]

the one that came in the box..

[@BobEstler]

You should try a share prop.

[@SmallCraftCruising]

I am not familiar with this

[@loganpotts9623]

Sharrow Prop..................... they look interesting

[@SmallCraftCruising]

@@loganpotts9623 oh cool! never heard of them before.. will look to one in my motor's size and see how they perform!

[@OttoTheWeim]

Ha. Yeah first thing is Sharrow doesn’t make props yet for the small displacement (Hp) motors. And they cost at least $5000 just for the prop. Not worth it.

[@noidreculse8906]

Not a true hydrofoil, how about trim tabs on the bottom of the hull?

[@scottb4832]

Mount the se sport upside down (curves facing up) it will have the same effect on improving lift but will not cause as much drag and reduce top end speed.

[@SmallCraftCruising]

do it on your boat and report back to me! i would love to see that!

[@airgliderz]

Adding a "hydroplane/fin" to your outboard motor adds weight and drag. Hmmm thats better??

[@SmallCraftCruising]

did you watch the video? I literally addressed this question.. in the video..

[@50buttfish]

Had that problem but still no cure. Added foil, and cured my issue. Trim tab will save you gas an heartache..

[@corriedupreez7087]

Dude's sunglasses are big, good video tho

[@hulkhuggett]

Pretty sure that's a helmet.

[@haroldjuntunen7010]

I have one on my boat and it planes on half speed and I like that alot

[@MichaelDuffy-fz1hf]

Same here .

[@TheDalyman]

Whats with the snowboarding goggles?

[@SmallCraftCruising]

they are great for wind and water spray as well!

[@robertwright7085]

Poor mans trim tab, these will get you on plane faster but do absolutely nothing about leveling the boat port/starboard!

[@SmallCraftCruising]

well, i am a poor man, so it fits!

[@bryanburrows7239]

R u mental

[@kennethhacker3014]

You need more prop brother..that rpm is to high..you should be at 35 -40mph at 4000 rpm.. great presentation

[@SmallCraftCruising]

40 mph on a 25HP motor on a hull designed back when segregation was still legal? not sure about that one..

[@Evian1990]

​@@SmallCraftCruising I've just read through all of these comments. Most are just mind boggling idiotic and flat out wrong, but this one totally takes the cake! 40 mph with a 25hp 4 stroke on a 50+ year old fiberglass hull. I want what he's smoking! Great video though, lots of good info. You perfectly demonstrated the real world comparison of each setup. Thank you!

[@patrickfearon7942]

That’s absolutely wrong. This motor is designed to go up to 6000rpm at WOT. He isn’t close to topping that out. My guess is this boat with the correct prop and trimmed out will be 31-33 at 5800rpm and riding real nice. 40mph would be super sketchy in that boat.

[@SmallCraftCruising]

@@patrickfearon7942 You are pretty accurate! i did a video already on the boats top speed (31MPH in that video). Playing with props and trim and it all, the fastest i have ever seen is 32 mph and that was with a tailwind. ultimately, the boat is downright scary at anything 28MPH and above (hull from the 1950's remember), i do not mind losing a little top end in favour of better control. so the foil/fin really is perfect for this boat

[@markspahr242]

It would be a stretch to get 35mph out of that boat.

[@TheJoebarrett]

That is a great product I put them on all of my boats. You should learn how to use your power trim

[@SmallCraftCruising]

Sometimes things that are not central to a video get cut from it in the interest of time and end up only in the background. Sorry to ruin the magic of editing for ya but my next video will centre around boat trim

[@JackSon-cs5vk]

cute little toy boat you have

[@SmallCraftCruising]

I have 2 of them 😻

[@jamaha268]

I think it cases more Drag.

[@SmallCraftCruising]

what makes you say that?

[@mikedodd9294]

lower mph at same 3500 RPM @@SmallCraftCruising

[@SABRECRAFT]

get some sponsons like a ski lol

[@SmallCraftCruising]

Would love to! 🤙🏻

[@briannielsbergh]

You should tell mercury, Suzuki and Yamaha, none of the know this secret

[@Munakas-wq3gp]

They don't need this secret if the boat is the planing type and the engine is strong enough. However this trick can make a non-planing hull plane or at least semi-plane. It wouldn't make any sense to install these flaps to a planing hull.

[@lwilliams55]

yes the nuts should be on top- probably makes no difference on that rig..

[@AquaMarine1000]

This plastic thing is not a hydrofoil. For a hydrofoil to be a hydrofoil, it must be shaped like a hydrofoil/wing to apply the physics of lift. These things can work like an anti-cavitation/trim plate. It is a very expensive piece of plastic to compensate for a bad motor set-up or trim. It is marketed as a hydrofoil because it sounds good - do your research.

[@SmallCraftCruising]

this comment makes me think you have no idea what you are talking about

[@AquaMarine1000]

@SmallCraftCruising Don't make me laugh, I make hydrofoils. There is no secret to hydrofoil design. To generate lift, the design must allow the water to travel faster over the wing than below. These are also the principles of aeronautical wing design. Any advantage gained from these plastic accessories is not from any hydrofoil effect. To argue the point is contrary to more than one hundred years of principle research and development. Cheers

[@SmallCraftCruising]

@@AquaMarine1000 well, i have a youtube channel partially dedicated to testing and reviewing water-based equipment, when can i come test your products? where would i find them?

[@bryanburrows7239]

Ur mental

[@Brad-vo1gg]

Well woopty do mr know it all. We all must hail your wisdom. You wanker

[@rinzlerprime3372]

I noticed that you were not triming out the motor while underway and mentioned nothing about trim. Also have you tried to change engine height before adding a foil ? Your cavitation plate while underway should be at the top of the water pretty much. Reason why I say this is that people add a foil for no reason because they don't know how to use trim and your engine height is wrong :) you want to exhaust all options before just throwing on a foil or a 4 blade prop, foil is more drag and 4 blade prop is less efficient and slower

[@SmallCraftCruising]

i plan to make a video talking about how trim affects boat speed

[@1fatlenny]

Talking about drag, wouldn't you have less drag if you used carage style bolts with the smooth side down and shouldnt the foil and anticavitation plate be out of the water at top end? Check your height, keep the foil but get it just out of the water at WOT with adjusting engine height.

[@country_collector5209]

WOT should be around 5600 you should drop a pich in the prop. As well as I didn't see you trim up at all after on plain you should trim up a little bit just hold the trim up button for second and you will feel the backend rise up.

[@javery50]

Never saw him trim the motor up.😂

[@jaysonsetzer2287]

When you get to wide open throttle trim the engine up some and you will turn more rpms and get better top speeds

[@stephenhart6934]

You can raise your motor height with that foil without cavitation. This will help with lost speed. Foils help with better response with trim and tilt.

[@SmallCraftCruising]

i will do a video on how it affects the trim, because it is a big difference

[@BlancoLobo]

Put one of these on a 74" Glassmaster tri hull powered by a 60 hp 2stoke mercury. Pulled over to a cove after 20 mins and took it off. Made the boat lose 5 mph from top speed and it rode around everywhere with the bow way in the air. Some of the worse money I ever spent.

[@CncObsession]

Did you not try to adjust the trim?

[@howard1484]

Having the bow way in the air and losing speed means you either have the motor trimmed wrong or you have the motor too deep in the water. Probably both in this case.

[@BlancoLobo]

@@CncObsession motor had hydraulic trim so no matter how it was adjusted the bow was way to high.

[@tintdr]

You need same to go down at minimum 1 pitch in that prop 2 pitch reduction would be perfect for when you have passangers. If its speed and 1 person. Reduce 1 pitch if its overall performance go down 2 pitches or 3 i think you gain 200 or 400 rpm per drop in pitch. Read up on it. But if I'm correct i think that motors max efficient running rpm is 5600 rpm but don't quote me.

[@bryanromeo7949]

What's the prop pitch on this motor?

[@michaelbyrne8860]

Trim is to far in!

[@brianyechout1058]

Pretty good video dude. I have one of those exact ones on my 20’ open bow. I haven’t checked to see if it slows down my boat, but in rough water, it really helps with controlling the boat!

[@scottb4832]

Mount it upside down will handle better reduce drag maintain top end speed

[@SmallCraftCruising]

@@scottb4832 lets see it on your boat

[@samfishnsky391]

If you're losing top speed it's because your outboard is mounted too low. Raise it up to get the hydrofoil to skim on top of the water at top speed and you'll get the pros without losing top end... I have the exact same hydrofoil on mine and keep it for slower planning speed. Not losing any top speed since the outboard was raised to it's most efficient position...

[@toznerd6369]

100 percent agree on this! I added an SE Sport 200 to my 20' bass boat and by adjusting my jack plate to raise the motor, my boat would jump right up on plane at a much lower RPM and speed, like it was going over a curb, and never lost top speed.

[@patrickfearon7942]

This is what I’m hoping for. I have a 12’ flat bottom jon with a Suzuki 9.9EFI 4-stroke. First mount and it was dragging and the cav plate was under water. Couldn’t reach full RPM and had a hard time planing unless someone was sitting on the bow to keep it down. I added a jack plate and played with the mounting holes. Went higher and higher until it would blow out and dropped it back down. Now I can plane easier and get the WOT RPMs right, but since it’s a 9.9 I don’t have power trim. The only way to plane out is to have it all the way down, but this causes porpoising at top speed. I’m thinking adding a foil and setting the trim to the middle setting might be the cure. Won’t need to be fully trimmed down to plane and should be a flat running surface at speed. So many damn factors on tiny boats. Life was much easier on my 22’ Key West Center Console with a 200hp Yamaha and hydraulic trim tabs.

[@jimlove4541]

Good for you you took an older hull and repowered it with a great little motor, I hope you spent the cash and did get power trim and the short lower end. If so with the engine propped correctly and engine height correct that boat should be doing a lot better than it is. I wish you had taken some nice long shots of the water spray at the transom with and without the foil. If you are keeping the boat and want more versatility at different altitudes get a jack plate and use the more coarse prop . Don't bother if you don't have power trim.

[@SmallCraftCruising]

I used my 'biggest' prop at over 4000 elevation, and I should have gone down a size or two before filming. Did not think of it until i was on the water, and since it was not exactly central to the video since the foil would drag (or not drag) regardless of the prop, i did not swap them. yes, it has power trim, and i did a top speed run at a lake near sea level and found 31 MPH at 5600 RPM (with this same prop) you can see that video in my profile under "Top Speed Run on Classic Boat" and yes, i am trying to get better shots of the boat. I need an assistant to help film..

[@Drunken_Hamster]

For all the people saying you need to go down a pitch on your prop, I think you also need to go up in power. If you're not willing to go up a weight class, look for the highest HP that's within 50 pounds of your current motor's weight. If you ARE willing to go up a weight class, or even TWO, you can get a 60-115HP modern engine, or you can stay pretty light with an old-school 2-stroke 90hp or so 3-cylinder. Do you need anything over 90? No, not unless you're a true speed demon, then you go 115-175. But 60-90 will do you DAMN good, and IMO you need AT LEAST a 40 on that boat for it to get out of its own way. Most of the realistic issues with motors are weight, though, so if you find that 40s, 50s and 60s all weigh the same, then there's no sense going for the 40 when you can run a 60, have power to spare for more weight, run at a lower RPM for planing cruise at the same or potentially better fuel efficiency, AND have more "clout" for running a bigger motor. And if you're worried about cops, a 60 won't look out of place and a 90 might get a chin scratch or two. Either way, you can register the boat differently so there won't be issues, and/or you can just put a smaller sticker on it, as long as it's relatively believable. (Nobody will believe a 90hp sized cowl is only covering 15hp or 25hp, but they might believe a 90 is a 60 or a 60 is a 40)

[@SmallCraftCruising]

at the time of purchasing the motor, the highest HP in a 15" shaft was 25.. i really wanted 30-35, but was simply not available.. and yes, that motor is much too heavy for that boat.. I will need to find another solution

[@Drunken_Hamster]

@@SmallCraftCruising Ehhh, if you're willing to add to/modify your transom you could add the 5 inches of height to it you'd need to run a 20" shaft motor. Then you could swap that 25 for a DF60A if you want to keep it Suzuki and want to keep it modern. Yeah, it's 80 pounds heavier. But that's a large dog, or 2/3 of a woman. Which might equate to another 2 inches of draft, tops. Your boat doesn't sag nearly enough in the water with a 25 as you feel it does, and even if that was considered bad sag, you can fix that as a part of your transom mods by adding some pour foam. Once you combine the massive power gain with a 4-bladed prop and using a hydrofoil on the new motor, everything will equal out. At worst, you'd have to add a little front ballast, but IDK what your fuel tank situation is. Then again, if you're happy being slow and unmodified, more power to you. If you want to go at least a little fast and have much better performance with 3 or 4 passengers, then do some research and delve into modding. If you're still worried about the weights, older 2-strokes in the 40-60hp range are mostly all under 200 pounds. You could even mod those to make them more powerful, still. A race-prepped 40 probably makes closer to 60 and still only weighs 180 pounds, all without being THAT out of whack so as to be unreliable or whatever. Just 30 pounds more for over double your current power.

[@SmallCraftCruising]

@@Drunken_Hamster the boat was originally rated for something like 40-50 horsepower, but the problem is, is the transom is close enough to the water as is that small wind waves have come over the back and threatened to sink the boat.. skinny of it is, is the boat is too small.. also, the 25 can get this up to 30 mph which is scary fast for that tiny hull.. i would not want to be able to go much faster TBH.. i am trying to find a 14-15' of a similiar year, and then put a 50 hp on it instead

[@Drunken_Hamster]

@@SmallCraftCruising Cool. I'll probably see the video sometime, then.

[@Bmxking867]

There is no SE 100, they only come in 200, 300 and 400 series.

[@anub100official7]

He got scammed 😂😂😂

[@Beecher_Dikov]

I put one on mine and plained out much faster.

[@chriszeiger9073]

If you want to go faster with the hydrofoil then you got to trim your motor up and it will give you the top speed you’re looking for.

[@DoubleBFPV]

Sweet little rig ya got there man!

[@Leightr]

I had the same "tail-heavy" concerns putting a 4-stroke 20hp on my 12 foot aluminum. The boat was rated for up to 20hp but it was also made back when lighter 2-strokes were the norm. I had a local shop make me up some bolt-on pods for the stern. Added a foot to the length and now it sits fine with the 4-stroke and even gets on a plane easier when I have the 9.9hp on.

[@karsconijn1876]

I like your video's a lot!! So thanks for the effort. The quality may not be the best, but the subjects, and the way you share the information in a detailed way is great! ( like what rpm does for the speed, and when it starts plaining) Maybe you could make another video about the diffrent props you told about, (Or try a 4 blade?) In short: Keep it up, and i look forward for more!!!

[@SmallCraftCruising]

thank you! yes, i would love to increase the quality, but I am mostly one person doing this, so I do what I can with what I have.. but sure, I will do another video with the effects of different props

[@yyabay]

Sunglasses = rabbitshi*

[@SmallCraftCruising]

you dont like sunglasses?

[@yyabay]

@@SmallCraftCruising Dude, they seem like Organic AmoQled screen :)

[@heisrisen6898]

It’s a leveler

[@JamesJones-cx5pk]

I just got my 30 Suzuki. Going on my 16 V.

[@thatflippinrabbit954]

Yea bro the mounting bolts are in upside down.

[@renedemers3205]

I put that same Hydrofoil on my 19 foot bow rider. Yes it does slow you down . I also have a 4 fin prop witch I put on. The boat planes much nicer and had a awesome hole shot with and without skiers. I save on fuel by plane at slower speeds. With just one small person or persons in the bow it plane’s really nice and slow. That’s what I wanted when I put it on. They make a nice slow plane with a foil on. There not for speed. In my opinion. Thank you for the video.

[@markspahr242]

Same for me. Great improvement!

[@PaulTavra]

Ditch the plastic get a permatrim!

[@leejohnson6173]

Thoes work just fine on small boats..trim tabs are way overkill.

[@smokeshow1984]

Get auto trim tabs, they are so much better

[@SmallCraftCruising]

boat is too small for them to fit

[@alexanderscott2567]

@@SmallCraftCruising Need a bigger boat!

[@ronsaathoff1561]

Nice boat.

[@KHtally]

The biggest thing is how fast you get on plane. They work great for heavier setups.

[@SmallCraftCruising]

and even though the boat is 'light' the motor is proportionally heavy, and it really helps balance the boat out

[@ryant651]

You need a power trim and tilt to provide the proper attack angle. It works really well with a hydrofoil. Finding a proper attack angle will cause your boat to go faster without increasing the throttle.

[@SmallCraftCruising]

did you not watch the part where i specifically pointed out the power trim on this motor?

[@ryant651]

@@SmallCraftCruising please accept my apologies. I watched your video again and saw your hydraulic trim and tilt. I have the SE 300 and l love it. But one day I was out and found that adjusting my motor upwards from the throttle handle while cruising caused my bow to rise and my speed to increase. I believe this improves fuel efficiency. This hydrofoil drastically improved my ability to raise or lower my bow to find the sweet spot of fuel efficiency. Also, I love this ability to raise my bow up when going against larger wind generated waves. Like you said I also love that it very much improved overall stability. Very respectfully, Ryan

[@bigmeaney555]

If engines were supposed to have them they would design the cavitation plate as such. Get trim tabs or a bigger engine and trow the foil out.

[@SmallCraftCruising]

find me a 4-stroke 15" motor new with more than 25 hp please!! I would love to upgrade

[@patrickfearon7942]

These engines have so many different applications it would be stupid to come with them. Some boats benefit from them, others only have a negative impact. A fun would be useless if this motor was on a pontoon or work barge or if being used as a kicker motor or on a sailboat.

[@kirb743]

I feel like you should trim the motor out and test max speeds

[@SmallCraftCruising]

@@kirb743 I did.. in a different video 🤙🏻

[@bluemut55]

Love these things! It tells potential buyers that the boat is underpowered and you should walk away.

[@SmallCraftCruising]

you clearly did not watch the video

[@Munakas-wq3gp]

My father did this (although on the sides instead of the outboard) to his row-boat style boat with a 5hp outboard. Before it just raised the nose up and didn't glide but after a few screws and glass fibre panels the boat started planing and top speed almost doubled with the same engine.

[@sowhat5939]

cool boat

[@imbranjamil4994]

Goodjob bos

[@willbrink]

Basically a trim tab added to the motor?

[@markspahr242]

Hydrofoil. It's the difference between an airfoil and an elevator on an airplane. The (hydrofoil) airfoil lifts because of the curve and the (trim tabs) elevator only deflects.

[@lodwill5116]

Just bought 100 evinrude . From guy with your size boat. He built two aluminum boxes for buoyancy. Lol. I got nice motor. And bet with his new 40 horse he has same problem. . I thought he should have shimmed motor to keep front down. And hydrofoil would have helped. . But good for me. Lol 😮 do you think I may be right on tilting motor. Shims on top . Tilt top. motor out more. ? You don’t have to take off tilted in. But up on plan with tilt to keep front down.??? I’m just thinking is all. And I did not look 👀 if he had bottom lined up. With motor right. I’m shure he did.? I just wanted that 100. To replace my 75. More faster more gooder lolz 😮

[@adventureontop7923]

Nice!

[@johnhiggs325]

Auto (sprung) transom tabs will produce better handling and fix your trim issue in the transition range without sacrificing so much at WOT. The foil produces cavitation at a certain speed which you are most definitely exceeding (probably about 18 knots.) You may also want to investigate how much negative transom angle you have. I know a lot of older runabouts have a 0 degree transom which doesn’t give the prop a negative angle of attack to facilitate lower speed planing. A simple fix for this problem is installing a stand-off with a few degrees of negative angle between the motor mount and transom.

[@Drunken_Hamster]

If you're building a boat from scratch, what's the ideal transom angle?

[@robertmccorkle9656]

It’s been my experience that using a four blade prop will really cut down the fishtailing and greatly reduce the sliding in turns while giving you a tighter turn radius and get you on plane faster. You may lose a little on top speed but you will definitely have a safer boating experience.

[@Jay8stefan]

with this engine rpm should be 5000 - 6000 so you can change the prop as Gennaro said

[@gennarodimartino5777]

You have the wrong prop on the it should turn 6000 RPMs

[@SmallCraftCruising]

look up the WOT rpm range of that motor and get back to me

[@patrickfearon7942]

@@SmallCraftCruisingit is 5000-6000 operating range. Their own boat test shows it getting 5500 on a pontoon. When set up correctly you should 100% get the top end of that range on a boat like yours. I have a new Suzuki 9.9EFI on my 12’ flat bottom jon boat and consistently get 5900rpms WOT after I installed a jack plate. Before the jack plate it was capped at 5400. Now the engine sings and feels like it isn’t working as hard as before.

[@SmallCraftCruising]

@@patrickfearon7942 these sorts of things are important, but was not the scope of the video

[@Hitech82]

There is nothing wrong with that. Great little boat

[@johnkent9019]

I had the same experience with a 16' Aluminum Lund with a 50hp Johnson. With the hydrofoil, can get the boat up on plane quicker even when heavily loaded, can turn sharper without cavitation, it makes the boat "fee" bigger" and more stable. Because it is a wing in the water it does reduce the top speed slightly, but for me that is more than offset by the other advantages. I consider it well worth it.

[@mahmoudeljedwy3247]

thanks a lot for the video

[@SmallCraftCruising]

@@mahmoudeljedwy3247 hope it helped

[@Captain_Zero_]

Mine causes my boat to almost flip over when trimmed down. Scared the hell out of me.

[@Oxinder]

They make 2 versions that don’t need holes drilled.

[@Pisomajado]

Why not use your tilt and trim? You'll go faster

[@SmallCraftCruising]

was not shown in video, was used

[@joshhubbard59]

Very cool boat, the style reminds me of my 60'

[@FaithwalkerTodd]

I put that same hydrofoil on my 14 1/2 foot StarCraft John boat with a 25 Yamaha. Made a world a difference. It was nearly uncontrollable without it and it would porpoise uncontrollably. Now it drives like a new boat. It’s an amazing transformation.

[@jobsearch5871]

I think I like those glasses, hehe. Do you have a link.

[@ryanferris7841]

The top end was better without the fins! And that’s all I care about lol so I won’t be getting them anytime soon

[@TR4zest]

If you choose to be slower to get on the plane, you will be left behind .....

[@seacap10vancouver54]

Why didnt you use Carriage Bolts to mount it with the rounded heads down?

[@SmallCraftCruising]

i used the bolts that came with the product

[@seano2842]

Is that a Duo? I used to have that boat

[@zedwpd]

I have a 1965 Hydrodyne and it doesnt have hard chines too.

[@SmallCraftCruising]

yeah, the earliest i have seen them is 1960, but i do not know of any that did not have them by 1970.. am no expert though

[@jjjk7895]

If you put a 4 blade prop instead it should give you more stern lift

[@SmallCraftCruising]

i have not been able to find a 4-blade for this outboard.. got any links? I would love to try one out!