Yes, reshape the prop with an angle grinder, you will be surprised how much difference it makes. They have ways to calculate the prop specs that are optimal online. Obviously you can't change the pitch but the diameter you can....easy way would be to draw/print a template on paper and trace it out on the fins so they are the same.
i really like your WEIRD projects and different type of views and humor awesome job keep it up your doing and awesome job your well on your way to a huge following on youtube
I really enjoyed watching the whole project , it was a triumph of ingenuity & skill , a fine example of the Gung ho attitude. I thought the speed was ideal for waterways where you don't want to make a big wash. Lovely canoe duckling to swan
Very cool. Back when I was a kid, I wanted a motor bike in the worst way. Problem was, we had barly enough money from mom cooking at the Truck Stop, what she had left after furnishing dad with his vodka was almost enough to put food on the table, and a new pair of shoes for me every school year, and perhaps a new shirt when it came time for school pictures. So it was, that I talked my neighbor out of an old bike frame that his dad had welded a motor mount on, and converted the peddle mech to a pulley that ran the chain and made the machine go forward if the pulley were attached to a motor. Now I didn't have a good motor, but dad had saved the little Maytag gas engines off the washing machines, and I took one of those and mounted it on the frame. Then not having a clutch mechanism I built a sort of slip clutch with a bar mounted on it, so I could pull the belt tight and make it go. Last problem, the damn little motor really didn't have enough power to make the bike go. I quickly learned, however that if I could kick the ground hard enough to get up a bit of speed, then engage the motor that it would indeed keep me going fast enough not to fall over for a block or more. Since we were on the wrong side of the tracks, and the nearest law enforcement was over 25 miles away, I never worried about licenses or insurance as, well I just could not afford it, just make sure I never crossed the tracks where there were cops, and paved streets to be had. The coolest thing I ever did with it, though, was to put a 4 foot long pipe on the exhaust, man that made the little Maytag sound like a Harley! Didn't seem to make it go faster, but it did attract attention when I rode her by. Years later, I went through 4 bikes before my damn back went south and I could no longer ride. GOD how I miss that.
Huge props - pun intended - on the effort! Given what you started with, not too shabby! If it were my kick at the can, Id likely extend the hull sides upwards at least 6"-12" for better freeboard. Well hope the next fellow has fun!
Yes I agree. I love your ideas, but think how light weight the string that the engine used to spin, and can change the prop pitch as well, it's like trying to start off your car in 4th gear. I don't have the answers, but have heard a light weight electric trolling motor prop. can make a big improvement.
What you need is a 6560 RC boat prop for high RPM motors, trolling motor props are low pitch and tall for slow RPM motors. But remember a weed wacker pushes a 40-inch RC boat at 15 to 20 mph but its super light. In order for this system to have more power and little more speed, you need to add a jackshaft gear reduction for the trolling motor prop 6 to 1 gear reduction jackshaft, you can find used ones for 15 bucks on eBay or craigslist.
Smaller prop and super unleaded with a mixture of denatured alcohol added to your mix. I even used it in my mowers. I learned that from an old timer. Helps it to run cleaner.
@@saveitforparts .....hi buddy.....As far as I'm concerned, you are a genius and I will always appreciate your knowledge hard work and dedication to your channel. Thank you very much.
saveitforparts Way to go! Yes, some things I’d do different but I didn’t build it did I? Even the wise asses sometimes give out some helpful ideas, some are even well meaning, just don’t have any people skills (or too lazy to use them). When you are innovative and creative there will be stuck-in-mud types trying to be cleverly insulting; just take any good ideas they accidentally leave and feel sorry for them - they’ll never do anything someone else hasn’t already done. Keep on thinking and doing, not enough people use that combination anymore. 🛠
I concur on the prop size being too large. I feel like you should have been looking at some of the larger RC boat prop sizes, and types. You definitely had too large a prop- just too much resistance, stopping that little two-stroke from reaching the higher rpm it wants to run best at. (In fact, if you have a lathe, turn the prop blades down to a smaller size. You will get an increase in rpms, and even though your prop is smaller, your boat will probably accelerate faster, and have a faster top speed.)
The speed issue is because those types of engines are not what you would call a torque monster, and your boat trim is such that the entire property is under water. If you sat in the middle of the boat to where half the prop was above water, it would run a lot better. If it is even possible to trim the boat level enough to make that happen, as you did mount the prop pretty low in the stern. Overall, nice effort! I've enjoyed watching it, and it gained a sub from me.
I like the power boat idea. A less aggressive pitch propeller and run a stihl weedeater engine if you were determined on a faster speed. Or sell the little boat and put that into upgrading the bigger and faster one. Just an idea.
not much freeboard on that canoe. it sits pretty low in the water. Fun project though. How much are you gonna sell it for? I'd love to see the disclaimers in that contract. (as is...)
If you put some eyelets in the gunwhales and run string through it to your rudder you could do away with the tiller handle and have better steering too. Cool project.
There's just something about a trash boat named dumpster fire with bad flames painted on it putting across the lake at a mild speed billowing smoke that is just hilarious. I'm sure i couldn't do any better at making flames with those paints either though lol. but hey at least it's not shaped and painted like a dumpster? Keep it up man I like your videos!
The biggest problem with these small motors is that people leave fuel in the tank,so that means that gel fungus clogs up the foam around the pickup in the tank but if you drain the tank and let it dry this cannot happen and will start first go with it primed.so keep the fuel sys clean
I think you have too much propeller. The weed whacker max RPM is much higher than typical two stroke boat motor RPM, so ideal would be an unusually small propeller of unusually low pitch. But a small propeller of normal pitch would be better than an excessively large one; you could find a smaller prop or put that one in a lathe or drill press and smallerize the OD.
I agree, a much small prop is needed... Years ago Sear had a ultra small/ wacker motor... the prop on it was small... www.amazon.com/KCR-Products-CW-Waterwacker-Propeller/dp/B00WGPC0QE/ref=pd_sbs_200_t_1/147-0613546-2679818?_encoding=UTF8&pd_rd_i=B00WGPC0QE&pd_rd_r=ecc0c592-4a25-45c7-a372-44abc6d17717&pd_rd_w=ESuOl&pd_rd_wg=FBHid&pf_rd_p=5cfcfe89-300f-47d2-b1ad-a4e27203a02a&pf_rd_r=WKGE869W3AFWXYPN1Z4Q&psc=1&refRID=WKGE869W3AFWXYPN1Z4Q
totally agree I tried this with a friends prop he gave me and i ended up making my own small diameter and less pitch and worked a lot better. Was able to speed up rev's and not burn out the clutch.
You can also try adjusting the carburetor, it’s running rich so it doesn’t burn up the engine running high rpms with the weed wackier head. Try leaning out the carburetor while it’s in the water, which will make it way to lean to run out of the water.
In keeping with your super low budget build, you can look up prop calculators online, and rather than buy a custom one, since you cant change the pitch of your prop, you can decrease the prop diameter. If you don't have any fancy tools like a lathe, you can just run the prop at idle to spin it slow, then carefully hold an angle grinder up to the tips to eavenly shorten both tips.
Fun project, If you just had to have a small boat to escape a flood, very nice, The 25 or 30 cc engine is only going to pull so much, it runs about as fast as I expected. That engine will only pull about a 3" prop and any kind of RPM, Go look up the props for the Gas R/C boats of about that cc, they are probably 2 or 2.5".
I think you should use the 78mm propeller of the rc boat it is suitable for trimmer motor. I made a boat like yours with a 23cc engine and it ran 10mhp
high octane gas doesn't burn cleaner because it slows the detonation of the gas, causing more unburnt gas to go out the muffler and it would make it harder to start in alow compression engine
Smaller propeller like a 3" diameter but your only gunna go 5 mph the only way to get one of those little motors to go faster is a paddle board an a go- devil design engine mount. I've seen about twenty guys try that same design. The best one was a weed eater motor attached to 2 car alternators charging batteries an a real electric motor driving the boat with forwards,neutral an reverse. Then he ended up putting 2 electric motors an made it twin drive it bogies lol 😂.
That was the only one I had (that wasn't already attached to an outboard). I ended up selling this boat to some kids who were going to put a lawnmower engine in it!
Take the spark resister out of the muffler and make sure the exhaust port is not restricted with carbon. Oh yeah small engines definitely do not like higher than 87 octane fuel
As mention by others,, the art of chosing the correct prop is legendary. It is exceedingly difficult to do.. But also,,, I have some marine engineering background. The max speed of a displacement vessel,,, a canoe in this case,,, is governed by the length of its water line. Short boat, slow speed. Planing boats can go faster,, but a non planing hull shape is just a nice round hole in the water and it is only going to go so fast. A better prop choice and you might be able to make that boat go a little faster,,, but beyond that,, add 200 horsepower,, and you will not go any faster. Max speed through the water for a small canoe is about 5 mph.
@Jimm Crowe Jim , Hello, that IS a slight exaggeration. The core though is absolutely true. If you cannot get it up on plane,, and canoes are almost intentionally designed to not step up on plane, the shorter the waterline, the slower the speed. Displacement hulls, canoes, older sailboats are governed, governed meaning speed limited, by physics. That 14', short canoe is moving at about its maximum possible. The formulae is Take the square root of the waterline length and multiply that by 1.34. That figure is called 'hull speed'. Up to about 80% of that figure a displacement vessel is astronomically efficient,, that is why they are designed that way. An 800 foot Great Lakes freighter loaded deep with iron ore,, on a no wind day,, can be moved readily with a 9.9hp Honda outboard,,, granted,, it will take half a day to get it up to 1 mph. Displacement hulls at low speed are amazingly efficient. A 17' canoe can be moved to about 3 mph with 1/4 of a horsepower, but 5 mph requires a full 1 horsepower, and 6mph will require 2hp,,, (beyond what most two man teams can produce for more than about 5 minutes.), 7mph will require 6 hp, 8mph will require 20hp, and 9mph will require about 40hp or more. 200 hp you might be able to get it up to 10mph. The maximum speed that loaded canoe will move through the water is about 10 mph,,, no matter what. remember, displacement hull. Put a 200 hp motor on there, and all it will do , if it cannot get up onto plane (That is a huge qualification,,, up on plane,, what most people are used to with a power boat,, it will go lots faster. But NOT a displacement hull.) That canoe is designed by 50,000 years of trial and error to be efficient for a man or woman to paddle. Put 200 hp on it,, and it ain't gonna go any faster. It will just dig a hole in the water and submerge. (Interestingly,, then it can go faster submerged. Not on top though.) Hull speed. Marine engineering and physics. That IS exactly why those 10 man crewing teams are in such long skinny boats. long displacement hull, faster.
@@Sailor376also I bet you could get this canoe planing with enough power behind it, the hull is essentially flat on this little guy. It would be a bit scary to control though! It's not something I plan on doing but would certainly be entertaining.
@@saveitforparts Laughing,,(thank you for the humour) Yes, you likely could get it up on plane,,, I think,,, But you have hit it out of the park with, "It certainly would be entertaining. I would actually kinds like to see it. I studied all the marine engineering long ago,,, but the one confirming data points in my direct experience,,, I canoe expedition,, long trips,, and often whatever the river throws at me. (I do not always stay upright,,, gotten really good at swimming major rapids.) My current principle long distance canoe is huge, 20' 3.5' wide,, and if you fully loaded it, I never do,,, 2,000 pound load capacity. The important bit is 20 feet long. Somewhere around 12 to 15 miles per hour,, gps recorded, over the ground, (includes the river water speed). tracks laser straight and really hard to turn.,, it is highly resistant to turning. And I don't mean just a little bit. And the top speed is interesting,, it has never passed 18.4 mph. I have logged fast water and big rapids many times,,,, but the max speed seems to be,, boat and water,, 18. something mph. Never once has it hit 18.7 or 19. So, how fast does water roar down through Cataract Canyon, Colorado River, plus how fast the boat is throough the water,,,, It don't just go no faster no how, no way. Note,,, a canoe going where only rafts normally go, I DO NOT recommend. I do it,, but I am old and ugly and it would waste little if I cashed it in. And,, I have more than 50 years paddling a canoe. And I still do not recommend it.
Interesting discussion. Although my fascination is with airplanes rather than boats, I have never owned a plane, and only took a few lessons when I was much younger. As correctly says, "The art of choosing the correct prop is legendary." Here's a sample of the concerns. www.homebuiltairplanes.com/forums/threads/prop-pitch-rpm-and-performance.32597/
Internal combustion engines are not really ready for prime-time yet, particularly the smaller ones :) :) You could, if you cared enough, wait until an e-Bike motor turns up, and replace the weed whacker motor with an electric motor., Peter Sripol has done that a couple of times on tiny boats, and your canoe would be perfect for an e-Bike motor...
I did something very similar to this with a weedeater on a kayak your propeller is way too big your motor will never get up to speed you will always go slow unless you get a smaller propeller I just carve some out of wood it worked very well weed eaters are made for high RPMs get the right size prop and you will go quite a bit faster than you can paddle
You may have the wrong pitch propeller for that motor. outboards are usually geared down 2:1 so that motor may not be able to rev up and apply its full power. see if you can get an outboard place to rework the prop to a lower pitch as its much easier then trying to find a gear box also that prop may have been driven by at least a 10 hp motor. You may only have 1.5 HP there
I agree with others. You should have trimmed the prop to match the speed and output of the motor. Second option, get ahold of a 2hp 4-cycle horizontal shaft yard trimer, the kind used to cut the grass right next to the side walk. That should work with the existing prop size. The old original electric motor probably had a lot more torque and the prop was sized for it. If you haven't gotten rid of it yet, give it a go. This experiment is NOT done! You could get 18 to 20mph out of that hull easy if done right!
yeah, the other people are correct, it's to much prop, it's heavy and it's got a lot of drag thru the water which the motor cant handle, maybe try a plastic prop half the size, weed eater motors are designed to spin very high rpm, but it doesnt have the power to spin that prop, eventually that motor will probably break or get burned up
He needs a jackshaft gear reduction. or an RC boat 6560 prop but still won't push it any faster as a cheap weed wacker only pushes a 40 inch RC boat that is super light 15mph. The only way for this to work is with a jackshaft 6 to 1 or 8 to 1 gear reduction and a trolling motor prop he might get 5mph.
I didnt get to see the carnage and mayhem on the water that I wanted but 100 points for effort. Keep up the good work. Do something that involves explosives , rocket power, sexual perversion etc. Viewers really like that sort of thing....
Some years ago there was available a weekwacker type motor attached to a curve shaft and a small prop , about 2" and a simple bracket to attach to back of boat. It actually worked , sort of ! Nice project! $100 lawnmower engines with a horz shaft are a better engine source though. Cheers Warren......something like this! ruclips.net/video/HC3INMveUHU/видео.html
Hi great project. Higher octane fuel in a two stroke will have no effect. You need to use synthetic 2 stroke oil and maybe cut to 40 or even 50:1 premix. This will give you a richer fuel:air ratio so you can then play with carb adjustments perhaps even opening up the venturi and the main jet? Or you could just fit a bigger motor or even experiment with a softer pitch propeller? Check out Colin Furze in UK for wacky projects!
I'm sure it will! It's a real beast under the cowling, I'm not looking forward to working on the multiple carbs. That's going to be a future video (or several) once the snow goes away!
@@saveitforparts the larger outboard engines from the sixties are notorious gas Hogs. Even one from just the 70s will get far better fuel economy. Just have your wallet ready if you get it running and use it very much
Oh man, I love it! Sure it's not a great boat, but you took some trash and you made something functional out of it! Good work man!
Yes, reshape the prop with an angle grinder, you will be surprised how much difference it makes. They have ways to calculate the prop specs that are optimal online. Obviously you can't change the pitch but the diameter you can....easy way would be to draw/print a template on paper and trace it out on the fins so they are the same.
Looks like a great canoe for a lazy Sunday on a calm lake! Nice build
i really like your WEIRD projects and different type of views and humor awesome job keep it up your doing and awesome job your well on your way to a huge following on youtube
I really enjoyed watching the whole project , it was a triumph of ingenuity & skill , a fine example of the Gung ho attitude. I thought the speed was ideal for waterways where you don't want to make a big wash. Lovely canoe duckling to swan
Very cool. Back when I was a kid, I wanted a motor bike in the worst way. Problem was, we had barly enough money from mom cooking at the Truck Stop, what she had left after furnishing dad with his vodka was almost enough to put food on the table, and a new pair of shoes for me every school year, and perhaps a new shirt when it came time for school pictures. So it was, that I talked my neighbor out of an old bike frame that his dad had welded a motor mount on, and converted the peddle mech to a pulley that ran the chain and made the machine go forward if the pulley were attached to a motor. Now I didn't have a good motor, but dad had saved the little Maytag gas engines off the washing machines, and I took one of those and mounted it on the frame. Then not having a clutch mechanism I built a sort of slip clutch with a bar mounted on it, so I could pull the belt tight and make it go. Last problem, the damn little motor really didn't have enough power to make the bike go. I quickly learned, however that if I could kick the ground hard enough to get up a bit of speed, then engage the motor that it would indeed keep me going fast enough not to fall over for a block or more. Since we were on the wrong side of the tracks, and the nearest law enforcement was over 25 miles away, I never worried about licenses or insurance as, well I just could not afford it, just make sure I never crossed the tracks where there were cops, and paved streets to be had. The coolest thing I ever did with it, though, was to put a 4 foot long pipe on the exhaust, man that made the little Maytag sound like a Harley! Didn't seem to make it go faster, but it did attract attention when I rode her by. Years later, I went through 4 bikes before my damn back went south and I could no longer ride. GOD how I miss that.
Great story! Thanks for sharing!
That's fast enough, man. Good job!
Awesome project 👍
Huge props - pun intended - on the effort! Given what you started with, not too shabby! If it were my kick at the can, Id likely extend the hull sides upwards at least 6"-12" for better freeboard. Well hope the next fellow has fun!
Nice Job Earthling
I like how you added weight in the front. (ballast)
I love it. You cant have a dumpster fire without smoke!👍
Great fun video! Should be a real blast out of one of the many old canoes for sale for a few dollars.
I like that your shirt matches the color of boat. That's it.
Glad to see that the boat didn't sink and have leakage problems like I thought you would. 😄 That smoking had me a little worried though. 😨
It smokes because it is a two cycle which burns oil instead of having a crankcase.
@@eltigre249 - Oh, ok then that makes sense if you understand those mechanics behind it which I don't. 😄
subscribed mate, that was a nice little project :)
That’s an awesome boat
love the shirt!
your propeller is too big.. thats why it cannot reach the right RPM...
Yes I agree. I love your ideas, but think how light weight the string that the engine used to spin, and can change the prop pitch as well, it's like trying to start off your car in 4th gear. I don't have the answers, but have heard a light weight electric trolling motor prop. can make a big improvement.
The diameter of the prop is too big. Cut it down by 1/2 that should work way better.
Agree, I got a large arc boat with a 33cc echo and a 2.5" prop. When I was a younger I use to tow myself in a inner tube with it.
XRMMonoShock Caloy you’re probably right
you are correct, sir! that is a high rpm motor..no torque
Awesome informational educational video experience Y'alls
What you need is a 6560 RC boat prop for high RPM motors, trolling motor props are low pitch and tall for slow RPM motors. But remember a weed wacker pushes a 40-inch RC boat at 15 to 20 mph but its super light. In order for this system to have more power and little more speed, you need to add a jackshaft gear reduction for the trolling motor prop 6 to 1 gear reduction jackshaft, you can find used ones for 15 bucks on eBay or craigslist.
You"re funny . designed by satin. Enjoyed your enthusiasm.
Suggestion; if you have not sold Dumpster fire. Put in two peddles for steering and sell as hands free trolling canoe.
Smaller prop and super unleaded with a mixture of denatured alcohol added to your mix. I even used it in my mowers. I learned that from an old timer. Helps it to run cleaner.
I might have to try the alcohol thing. Sometimes I add some Seafoam which is probably just overpriced alcohol and oil :-P
Perfect speed for walleye trolling!
I have never read a comments section where there's been this amount of smart arses. Damn....You guy's know everything!
It's the way of RUclips comments, there's always someone (or 5 someones) who spot anything you do wrong. I've come to expect it :-)
@@saveitforparts .....hi buddy.....As far as I'm concerned, you are a genius and I will always appreciate your knowledge hard work and dedication to your channel. Thank you very much.
saveitforparts Way to go! Yes, some things I’d do different but I didn’t build it did I? Even the wise asses sometimes give out some helpful ideas, some are even well meaning, just don’t have any people skills (or too lazy to use them). When you are innovative and creative there will be stuck-in-mud types trying to be cleverly insulting; just take any good ideas they accidentally leave and feel sorry for them - they’ll never do anything someone else hasn’t already done. Keep on thinking and doing, not enough people use that combination anymore. 🛠
I concur on the prop size being too large. I feel like you should have been looking at some of the larger RC boat prop sizes, and types. You definitely had too large a prop- just too much resistance, stopping that little two-stroke from reaching the higher rpm it wants to run best at. (In fact, if you have a lathe, turn the prop blades down to a smaller size. You will get an increase in rpms, and even though your prop is smaller, your boat will probably accelerate faster, and have a faster top speed.)
I love this thing. If the exhaust ran into the water (like boat motors do) it could be quiet too!
Seems more like the size of a trolling motor, so that speed isn't bad.
its running sooo rich !! backout the air screw 3/4 from all the way in and open up the airbox a bit that thing should scream
The speed issue is because those types of engines are not what you would call a torque monster, and your boat trim is such that the entire property is under water. If you sat in the middle of the boat to where half the prop was above water, it would run a lot better. If it is even possible to trim the boat level enough to make that happen, as you did mount the prop pretty low in the stern. Overall, nice effort! I've enjoyed watching it, and it gained a sub from me.
I like the power boat idea. A less aggressive pitch propeller and run a stihl weedeater engine if you were determined on a faster speed. Or sell the little boat and put that into upgrading the bigger and faster one. Just an idea.
I've sold it to someone who plans to put a bigger motor in! I'm moving on to finishing my airboat project :-)
@@saveitforparts Nice!! Good luck on the next project.
The man is a real-life Red Green.
Not enough duct tape :/
not much freeboard on that canoe. it sits pretty low in the water. Fun project though. How much are you gonna sell it for? I'd love to see the disclaimers in that contract. (as is...)
The pitch of the blades make a difference on speed, too. Props off trolling motors are designed to go slow.
If you put some eyelets in the gunwhales and run string through it to your rudder you could do away with the tiller handle and have better steering too. Cool project.
Yeah you had too much prop! The motor didn’t sound like it could rev high enough to reach the power band.
There's just something about a trash boat named dumpster fire with bad flames painted on it putting across the lake at a mild speed billowing smoke that is just hilarious. I'm sure i couldn't do any better at making flames with those paints either though lol. but hey at least it's not shaped and painted like a dumpster? Keep it up man I like your videos!
evilcanofdrpepper I just noticed the name too. Nice to see he thinks so highly of his project. Good work, good for a giggle anyways.
The biggest problem with these small motors is that people leave fuel in the tank,so that means that gel fungus clogs up the foam around the pickup in the tank but if you drain the tank and let it dry this cannot happen and will start first go with it primed.so keep the fuel sys clean
nice kayak. the speeds depends on how fast the cutter engine cut the grass. in my place big kids use that engine for RC boat for racing.
The pitch of the prop is too aggressive you'd need more HP or a prop with less of a pitch.
I think you have too much propeller. The weed whacker max RPM is much higher than typical two stroke boat motor RPM, so ideal would be an unusually small propeller of unusually low pitch. But a small propeller of normal pitch would be better than an excessively large one; you could find a smaller prop or put that one in a lathe or drill press and smallerize the OD.
I agree, a much small prop is needed... Years ago Sear had a ultra small/ wacker motor... the prop on it was small... www.amazon.com/KCR-Products-CW-Waterwacker-Propeller/dp/B00WGPC0QE/ref=pd_sbs_200_t_1/147-0613546-2679818?_encoding=UTF8&pd_rd_i=B00WGPC0QE&pd_rd_r=ecc0c592-4a25-45c7-a372-44abc6d17717&pd_rd_w=ESuOl&pd_rd_wg=FBHid&pf_rd_p=5cfcfe89-300f-47d2-b1ad-a4e27203a02a&pf_rd_r=WKGE869W3AFWXYPN1Z4Q&psc=1&refRID=WKGE869W3AFWXYPN1Z4Q
totally agree I tried this with a friends prop he gave me and i ended up making my own small diameter and less pitch and worked a lot better. Was able to speed up rev's and not burn out the clutch.
You can also try adjusting the carburetor, it’s running rich so it doesn’t burn up the engine running high rpms with the weed wackier head. Try leaning out the carburetor while it’s in the water, which will make it way to lean to run out of the water.
Word for the day.....smallerize
In keeping with your super low budget build, you can look up prop calculators online, and rather than buy a custom one, since you cant change the pitch of your prop, you can decrease the prop diameter. If you don't have any fancy tools like a lathe, you can just run the prop at idle to spin it slow, then carefully hold an angle grinder up to the tips to eavenly shorten both tips.
Carburetors are actually really awesome. Fuel additives like ethanol are the actual problem
Gotta match the prop to the motor to get the most efficient use of the motor's power, and thereby increase the speed..
That engine is probably too small anyway.
Fun project, If you just had to have a small boat to escape a flood, very nice, The 25 or 30 cc engine is only going to pull so much, it runs about as fast as I expected. That engine will only pull about a 3" prop and any kind of RPM, Go look up the props for the Gas R/C boats of about that cc, they are probably 2 or 2.5".
I think you should use the 78mm propeller of the rc boat it is suitable for trimmer motor. I made a boat like yours with a 23cc engine and it ran 10mhp
yeas ,, he's got the prop all wrong ...
Yes as Clint Mullins said the prop is too big 4-4.5 inch or make one thats a 1 hp eng and thats a 15 HP Prop
I would shorten the drive shaft and place your weight towards the center. Cool video and experimented with material.
Turning the prop down on a lathe maybe. I know it's still over pitched but it might help
My first bet would be to pull off the spark arrester !
I’ve had the same exact idea
Well it puts a long down the river just fine as far as I'm concerned how fast do you want to freaking go just go slow and enjoy life
high octane gas doesn't burn cleaner because it slows the detonation of the gas, causing more unburnt gas to go out the muffler and it would make it harder to start in alow compression engine
Smaller propeller like a 3" diameter but your only gunna go 5 mph the only way to get one of those little motors to go faster is a paddle board an a go- devil design engine mount. I've seen about twenty guys try that same design. The best one was a weed eater motor attached to 2 car alternators charging batteries an a real electric motor driving the boat with forwards,neutral an reverse. Then he ended up putting 2 electric motors an made it twin drive it bogies lol 😂.
I would replace the trolling prop with one designed for speed.
Higher octane fuel is for higher compression engines. It’s counterproductive to use it in worn out engines and it won’t create any additional power.
that propelled looks weird on spinning, did you try with another one?
That was the only one I had (that wasn't already attached to an outboard). I ended up selling this boat to some kids who were going to put a lawnmower engine in it!
Take the spark resister out of the muffler and make sure the exhaust port is not restricted with carbon. Oh yeah small engines definitely do not like higher than 87 octane fuel
It's! All about timing. Just look at any small outboard motor,
As mention by others,, the art of chosing the correct prop is legendary. It is exceedingly difficult to do.. But also,,, I have some marine engineering background. The max speed of a displacement vessel,,, a canoe in this case,,, is governed by the length of its water line. Short boat, slow speed. Planing boats can go faster,, but a non planing hull shape is just a nice round hole in the water and it is only going to go so fast. A better prop choice and you might be able to make that boat go a little faster,,, but beyond that,, add 200 horsepower,, and you will not go any faster. Max speed through the water for a small canoe is about 5 mph.
@Jimm Crowe Jim , Hello, that IS a slight exaggeration. The core though is absolutely true. If you cannot get it up on plane,, and canoes are almost intentionally designed to not step up on plane, the shorter the waterline, the slower the speed. Displacement hulls, canoes, older sailboats are governed, governed meaning speed limited, by physics. That 14', short canoe is moving at about its maximum possible. The formulae is Take the square root of the waterline length and multiply that by 1.34. That figure is called 'hull speed'. Up to about 80% of that figure a displacement vessel is astronomically efficient,, that is why they are designed that way. An 800 foot Great Lakes freighter loaded deep with iron ore,, on a no wind day,, can be moved readily with a 9.9hp Honda outboard,,, granted,, it will take half a day to get it up to 1 mph. Displacement hulls at low speed are amazingly efficient. A 17' canoe can be moved to about 3 mph with 1/4 of a horsepower, but 5 mph requires a full 1 horsepower, and 6mph will require 2hp,,, (beyond what most two man teams can produce for more than about 5 minutes.), 7mph will require 6 hp, 8mph will require 20hp, and 9mph will require about 40hp or more. 200 hp you might be able to get it up to 10mph. The maximum speed that loaded canoe will move through the water is about 10 mph,,, no matter what. remember, displacement hull. Put a 200 hp motor on there, and all it will do , if it cannot get up onto plane (That is a huge qualification,,, up on plane,, what most people are used to with a power boat,, it will go lots faster. But NOT a displacement hull.) That canoe is designed by 50,000 years of trial and error to be efficient for a man or woman to paddle. Put 200 hp on it,, and it ain't gonna go any faster. It will just dig a hole in the water and submerge. (Interestingly,, then it can go faster submerged. Not on top though.)
Hull speed. Marine engineering and physics. That IS exactly why those 10 man crewing teams are in such long skinny boats. long displacement hull, faster.
@@Sailor376also I bet you could get this canoe planing with enough power behind it, the hull is essentially flat on this little guy. It would be a bit scary to control though! It's not something I plan on doing but would certainly be entertaining.
@@saveitforparts Laughing,,(thank you for the humour) Yes, you likely could get it up on plane,,, I think,,, But you have hit it out of the park with, "It certainly would be entertaining. I would actually kinds like to see it.
I studied all the marine engineering long ago,,, but the one confirming data points in my direct experience,,, I canoe expedition,, long trips,, and often whatever the river throws at me. (I do not always stay upright,,, gotten really good at swimming major rapids.) My current principle long distance canoe is huge, 20' 3.5' wide,, and if you fully loaded it, I never do,,, 2,000 pound load capacity. The important bit is 20 feet long. Somewhere around 12 to 15 miles per hour,, gps recorded, over the ground, (includes the river water speed). tracks laser straight and really hard to turn.,, it is highly resistant to turning. And I don't mean just a little bit. And the top speed is interesting,, it has never passed 18.4 mph. I have logged fast water and big rapids many times,,,, but the max speed seems to be,, boat and water,, 18. something mph. Never once has it hit 18.7 or 19. So, how fast does water roar down through Cataract Canyon, Colorado River, plus how fast the boat is throough the water,,,, It don't just go no faster no how, no way. Note,,, a canoe going where only rafts normally go, I DO NOT recommend. I do it,, but I am old and ugly and it would waste little if I cashed it in. And,, I have more than 50 years paddling a canoe. And I still do not recommend it.
Interesting discussion.
Although my fascination is with airplanes rather than boats, I have never owned a plane, and only took a few lessons when I was much younger.
As correctly says, "The art of choosing the correct prop is legendary."
Here's a sample of the concerns.
www.homebuiltairplanes.com/forums/threads/prop-pitch-rpm-and-performance.32597/
That prop is designed for about 6 HP, the weed trimmer is making about 1.25HP at 6500 RPMs.......
You need a cement block in the front
Internal combustion engines are not really ready for prime-time yet, particularly the smaller ones :) :) You could, if you cared enough, wait until an e-Bike motor turns up, and replace the weed whacker motor with an electric motor., Peter Sripol has done that a couple of times on tiny boats, and your canoe would be perfect for an e-Bike motor...
I got rid of this canoe but I have some other busted boats that need motorizing. I always like Peter Sripol's stuff!
I did something very similar to this with a weedeater on a kayak your propeller is way too big your motor will never get up to speed you will always go slow unless you get a smaller propeller I just carve some out of wood it worked very well weed eaters are made for high RPMs get the right size prop and you will go quite a bit faster than you can paddle
You may have the wrong pitch propeller for that motor. outboards are usually geared down 2:1 so that motor may not be able to rev up and apply its full power. see if you can get an outboard place to rework the prop to a lower pitch as its much easier then trying to find a gear box
also that prop may have been driven by at least a 10 hp motor. You may only have 1.5 HP there
Actually, that gumout rinse makes a good "dirty" martini.
The resistance of the water is too much for the engine to fully spin up. Weed eaters are designed to operate with very little load on the engine.
i think you should give it an exhaust to the side or something
Do the truffle shuffle!!
MOAR POWERRRRR
watercraft is cool !
actually, a trolling motor prop is optimized for low speed. a normal prop will give more speed.
Turn it up will definitely help but if you change that propped it will be even better 🤔
I agree with others. You should have trimmed the prop to match the speed and output of the motor. Second option, get ahold of a 2hp 4-cycle horizontal shaft yard trimer, the kind used to cut the grass right next to the side walk. That should work with the existing prop size. The old original electric motor probably had a lot more torque and the prop was sized for it. If you haven't gotten rid of it yet, give it a go. This experiment is NOT done! You could get 18 to 20mph out of that hull easy if done right!
Dig into the weed whacker engine. Do a base gasket delete, port it and build a pipe. That’ll get you going a bit faster.
I sold this to some kids who were going to put a lawnmower engine in it. I never heard if they survived 😅
"These were designed personally by Satan specifically to screw you over!" -- LOLZ, never a truer word spoken about those wretched little carburetors
I think you have too much propeller try shaving it a little or find a smaller prop.
not the size. wrong type.
yeah, the other people are correct, it's to much prop, it's heavy and it's got a lot of drag thru the water which the motor cant handle, maybe try a plastic prop half the size, weed eater motors are designed to spin very high rpm, but it doesnt have the power to spin that prop, eventually that motor will probably break or get burned up
Can you operate it through weeds and lily pads LOL , good job though .
With that large propeller you will only burn your clutch.
You need a 5:1 or 6:1 reduction gear between engine and propeller. Then you will get speed 😉
I would love to see a 6.5hp preditor on that thing
I would have named it Cirrhosis of the River.
Now that's funny!
Hell, yes!
An engine that isn't optimized for high octane fuel will actually make less power on it. High octane fuel is actually less explosive.
You're going to sell it how much and where at
Would you sell it?/ Is it available still?
I actually just did! I had it on CL locally.
@@saveitforparts ah, darn
@@saveitforparts looked cool lol
I thought you were fogging for mosquitos.
Kind of a neat little project. But the prop is too big it’s the same prop size on my 4 hp outboard I use on my canoe
He needs a jackshaft gear reduction. or an RC boat 6560 prop but still won't push it any faster as a cheap weed wacker only pushes a 40 inch RC boat that is super light 15mph. The only way for this to work is with a jackshaft 6 to 1 or 8 to 1 gear reduction and a trolling motor prop he might get 5mph.
Lloyd Nielsen totally a common sense thing
A four blade prop might have helped.
Try a plastic model airplane propellor. That's what's used on human powered boats.
You probably need a gear box so you can get more power revving
RC boats use props for this size motor.
I didnt get to see the carnage and mayhem on the water that I wanted but 100 points for effort. Keep up the good work. Do something that involves explosives , rocket power, sexual perversion etc. Viewers really like that sort of thing....
It has a clutch on the Wacker get rid of it .and will go lot faster..
I need the boat
Your propeller is to big.
The engine isn't running on is optimal rpm.
Some years ago there was available a weekwacker type motor attached to a curve shaft and a small prop , about 2" and a simple bracket to attach to back of boat. It actually worked , sort of ! Nice project! $100 lawnmower engines with a horz shaft are a better engine source though.
Cheers Warren......something like this! ruclips.net/video/HC3INMveUHU/видео.html
Hi great project. Higher octane fuel in a two stroke will have no effect. You need to use synthetic 2 stroke oil and maybe cut to 40 or even 50:1 premix. This will give you a richer fuel:air ratio so you can then play with carb adjustments perhaps even opening up the venturi and the main jet? Or you could just fit a bigger motor or even experiment with a softer pitch propeller?
Check out Colin Furze in UK for wacky projects!
That 4-cylinder Evinrude outboard motor on the back of that tri-hull boat will put you in the poor house if you try to feed gasoline to it.
I'm sure it will! It's a real beast under the cowling, I'm not looking forward to working on the multiple carbs. That's going to be a future video (or several) once the snow goes away!
@@saveitforparts the larger outboard engines from the sixties are notorious gas Hogs. Even one from just the 70s will get far better fuel economy. Just have your wallet ready if you get it running and use it very much
Cut the diameter down in the prop you got, start with 1/2 on both sides
I still love it. Next one will have rocket engines and laser beams.
or next one with bikinis and beer?
I do have an upcoming video with some large rockets...