Finally Someone took my build to the next level. Great job on the outcome! Next person will have to focus on the budget numbers to make this homebrew a DIY hack all should build! Great Job Zach
Max Speed: ~35 mph Max RPM: ~6,000 rpm Runtime: ~30 minutes Weight added: +50 lbs Battery Voltage: 128 volts Hopefully people will see these stats, I should have put in the end of the video!
To take advantage of the higher torque out of your motor, you could swap the impeller from I believe was the 717 engine that ski came with with the 787cc impeller, it has tighter pitch, you’d also need the 787 impeller shaft kit for the jet pump. Easily doable.
So I have built a number of electric vehicles. That much power (66kw) by my calculation should have been a lot more impressive then what you are experiencing. I hate to say it, man, especially since it's a year after you post this video, but I think your controller isn't programmed properly. The heat building up is also a sign of improper programming. I know it takes a lot of power to push through water at high speed but the torque off the line should be pretty insane with 66kw of electric power. I don't know if you have moved on from the project but you might want to have another look at your programing. You could be sitting on a real monster and not even know it.
If not that, he needs to check the drivetrain. One tiny piece of grass stuck in the impeller will stop my jet ski from planing and normally it gets up to 50mph. This is very high precision stuff. I think the motor you have can do it!
Zach, the seadoo itself has a max load capacity as well. If you weigh less than the max load capacity then you can add the remaining capacity after subtracting your weight to the weight allowed for batteries.
i love how ya did the spot welding bc didnt have one! i used a microwave transformer and rewound the secondary 3 turns with some think(cant remember gauge) wire and copper brake line for my electrode end fabed to a nice thick point. i just always have to respect the simple guy/girl working from a small garage with what they got! respect! lol
Love this! And your roll your own spot welder is pure genius! One issue that I didn't see any mention of in your video is about thermal management of the batteries. Lithium-ion batteries are subject to thermal runaway which can cause the entire battery pack to catch fire. There are three basic ways that a battery could suffer a thermal runaway, but in your case the most likely cause is that the battery internal temperature gets too high. This is due to high internal heat generation from running at the maximum continuous amps combined with the fact that your sealed plastic battery boxes and foam pieces are actually thermally *_insulating_* and so make it difficult for heat generated by the batteries to escape. My suggestion is that at a minimum, you figure out a way to put a temperature sensor inside each of the battery boxes and connect them to something that will sound an alarm if the temperature inside any box reaches a maximum safe temperature. The sensor should be buried in the middle of the battery pack since this is where the temperature is likely to be the highest. You can also make some modifications to better manage the heat. A simple way is to simply blow air over them to add some forced convection. Another improvement would be to drill a hole in the lid of each battery box and a second hole in the side near the bottom. This would pull air in the hole in the bottom and as that air is heated by the batteries, it rises and exits out the hole in the lid. To keep water out, you could put a riser tube from PVC pipe in the bottom hole and going up to at least the top of the box. Doing both of these would be even better. The ultimate would be to blow air into a box on the underside of the battery area lid and then run small air hoses from the air box to the bottom holes in each battery box to add forces convection directly inside the battery boxes. And for the ultimate thermal management system, you could use the fact that you are operating in a huge body of water, and add a water cooling system that takes lake water and pumps it through copper tubing inside the battery boxes. Only tubing inside the boxes would need to be copper. The rest of the water lines could be PEX tubing. Likely this would be major overkill, but it would definitely be a technical tour de force. Again great video! BTW, I am in the process of designing away to take an old commercial walk-behind mower being sold for cheap because the gas engine is shot and convert it to battery-electric. This would involve 5 electric motors, one for each of the three blades and one for each of the rear wheels. The blade motors will have a controller that varies current to keep the rpms of the blades constant. By having a motor for each rear wheel with its own throttle, I can turn the mower by differential throttling of the motors. I could just use one large motor to directly replace the gas engine, but then I would have to retain the pulley and belt system from the original gas engine configuration that just adds to maintenance. My biggest effort is designing the battery pack to have enough energy to mow my large yard while also being able to provide enough power to drive the motors. Right now my leading candidate for the battery is a lithium-iron-phosphate (LiFePO4). These have the advantage of having very high maximum specific power at the cost of a reduction in specific energy. Their greatest benefit is that the are faaaaar less susceptible to thermal runaway. And the electrolyte they use isn't flammable, so even if they do have a thermal runaway, the result should be just a venting of vapor without catching fire. Your video has been enormously helpful in my efforts to design my battery pack. Thanks!
You don't know what your saying. Lifepo batteries and heat have parameters but seriously you obviously are an arm chair captain. Go make your own projects.
First of all, great video. Some words of advice though for all of those out there thinking of doing something similar. When assembling a battery pack made out of cells like 18650 you absolutely need to group them according to their voltage, charge single cells if necessary. Also you should measure each individual cell's voltage and find potentially bad cells. There are many good videos explaining the professional assembly process of battery packs.
This is a cool video. Being a big personal watercraft fan and having a lot of experience with 1990s Sea-Doos, I will say that your ski is a 1995 Sea-Doo XP that had a 720 cc Rotax. That engine, when new, was capable of 85 hp. It would also spin close to 7800 RPMs. That would give it a top speed, in perfect conditions, trimmed up and leaning back, of about 54 mph. You definitely have the power of the electric motor it just seems you need the RPMs. And that coupler is getting trashed. Pay close attention to alignment. Very cool video.
The issue you're having with the coupling, is that you're out of spec for alignment of the spider type coupling. You might try a polyurethane tire coupling. They allow for a high degree of misalignment.
FANTASTIC video! I love all the details you included such as where you purchased parts from, why you chose them, and how much they cost, as well as the details for how you did the build. So many videos skip so much important stuff. I learned a ton from watching your video and loved how you DIY not only your own battery pack but your own spot welder! I hope you make more content like this!
Thanks to RUclips algorithms for recommending this video! Searched for three years, there were no good examples! I have the same jet ski, even colors and years, but not XP but GTI! I have long dreamed of transferring it to electric, I have even bought a motor! In the video, everything is done very competently, everything is super, except for the battery! the battery in the electrical theme is 90% success! Lithium iron phosphate prismatics in blue cases are highly recommended! they give more current, do not heat up, and are not very afraid of the cold, and they need less quantity! It is important to seal all wire connections against water! I really liked that the author taught the culture of weight! according to my calculations, about 80 kg is allocated, this is about 15 kWh of energy Thanks for the video, good luck! Subscribed!
Also, another logical detail, that everyone know, but to mention for future builders: fix all bateries and elements, and make covers water tight / sealed, as much as possible, in case you turn over in water (thats not unusual). Water could destroy almost everything inside (particularly salt water). In any case, ruff ride over waves, can throw things inside left/right, so fix them as much as possible. Excellent project - Bravo! Regards from Serbia
Fantastic build man, it was great to follow along step by step. I really like that your not afraid to be honest about when things didn't work out... some creators are too proud but i think its cool to see the stumbles along the way to the final build.
Yeah most youtubers try and mislead those that aren't too mechanically inclined. Like it all came together with no hiccups. Especially the young youtubers. The ones that you know damn well were learning about the same speed as the viewer. . They also talk the whole time like you can't see wtf they are using and doing. If your good at using objects in view for size reference then you can mostly judge how large an object is. A little off topic on the last part. Sorry
Awesome job! But for the price you could've put like 6 seadoo motors in that thing but watching this and doing that DIY build and learning stuff is well worth it!!! You got something unique now.
@@WindFireAllThatKindOfThing Yeah, but in a jet ski the instant torque doesn't translate like it does with car or bike. The jet pump inherently lags, especially if you want any top speed. It's still an awesome project though and probably something we'll see in the future from powersports manufacturers.
Could you have used lipo batteries like the ones we use for the quad copters or is that to dangerous 😂 because a 6s battery fits in my palm and produces 25.2 volts? 5 in series 30s? (I’m not an electrician)
@@FriendlyBassHunter It's a fair question, I think he'd need 40 6s 5000mah packs to get the same voltage and capacity as his 1st battery, (4x 6s in series with 10x in parallel) remember he had to add a few more too, so 50-60 packs to be usable. I think the 18650's are a less expensive option, but I could be wrong.
Just be careful running the jet pump at that high of an rpm, for that long, out of water. Awesome Project Build! Came out Great! Also i know it sounds like a bad idea bc of wires and metal.. But using metal battery boxes or some fire proof plastic, would work good and double as being a fire protection battery box, if a lipo battery cell assembly was to puff up or catch fire. I've seen some 4s & 6s rc lipo batteries go bad, usually nothing but sometimes smoke.. but fire isn't common but if you google for pictures you will see examples of it happening.. its a lot of power an a lot of Amps being pulled from the batteries and wiring.
If you have an electric setup thats super reliable and ride it alot in the summer, it saves alot of money on gas especially for a 2-stroke. 5 rides in with $4.25 a gallon is roughly $25 or more per boating day which is probably $1000 per summer which is insane. 1 Hour of runtime is acceptable because 2-stroke skis only get about 1 hour or so, 2 hours if conservative on fuel.
Guess you missed the part where it’s slower than a 4hp on a row boat …. Literally Freaking obd2 scanner to check rpm ?? Sure bud congrats glad I skipped to the end …. Haha
@@RobinIrving-cr4ug It’s cool innovation having an electric jet ski. We already have electric cars and boats with electric outboards, slower is fine, if you want more power just increase the voltage even more. People fail to understand how awesome electric vehicles are. They are easy to build, don’t pollute, and can be made compact.
Awesome project! There may be some batteries from salvage EV's that you could have bought to save you some time. On second thought you probably took that into consideration and found that either the weight or the cost would not make sense. I found this episode a lot more interesting than some science TV shows. Great job!
a tesla batterie is made out of 18650 battires that are connected together... people buy the 18650 from the factorys.. they are sold cheaper if they does not meet the standars.. you can probetly buy a pallet of batteries you sort in to a couple of standards, for the same price that he paid for his batteries.. it is probetly more from hybrid cars the batteries can be used, because of the size and weight. but those have value for other hybrid car owners
Exactly. To combat the moisture problems that come with interacting with a body of water, just put four wheels under it and use it on dry land. Add a cooling system. For rider comfort, just enclose the passenger compartment with door access and put an cargo area on the back. Increase the engine HP to go faster or haul more stuff. To save a bunch of time just buy a made in America Ford F150 since trying to do new things is for losers who read books.@@BOSS_DOG
Fantastic video and build! Run time could be expanded by expanding battery obviously. What I like about this is the cost savings to have some fun. A set of solar panels can keep your operating costs to a minimum. You also have an emergency power supply in the event of an outage at your home.
For all those people who don't fully understand just how powerful and useful those "dirty" gasoline engines really are! Excellent build sequence and I'm sure whichever engineering school you go to will be happy to have you. ;)
It just proves how inefficient jet-skis are by design. That much power spinning a prop would have you going 50knots. Jetski engines are actually pretty massive.
And currently there is no viable alternative to all of those dirty and inefficient gasoline engines. And there won't be anything available anytime soon either
@@timrussell1559 - I tend to agree, except that things are evolving very quickly in this space right now, as a result of all the money going into EV development. NASA claims to have a safe battery chemistry with gravimetric energy density high enough for commercial aircraft...that oughta move a PWC just fine.
That was a pretty awesome project! 🤩 A few tips if you ever need to build a big lithium pack again: While 18650 cells were the go to size for a long time these days you might want to look for 21700 cells, they are a bit bigger and tend to be a bit cheaper for the same total capacity (also more capacity per cell means a little less welding) for the spot welder you can get ready made modules that use a bunch of MOSFETS instead of a relay for switching the welding current giving you more consistent results...
WOW! ... just WOW! You crammed a TON of great stuff into this video. Excellent job with the mechanical and electrical bits! Oh, and very cool how nicely the battery boxes fit inside! I'm subscribing!
Very cool video! This brought back my creative side that I was born with, though @ 70 long in misuse. I had 3 different jet-ski rental business's in Florida, I jet-skied to work. Jet-skis were my life. Watching all this and your fantastic explanation of each step kept me mesmerized. Great job! I will leave with "The One" question not answered. All jet-skis and water-craft will Always have to deal with Water intrusion, it's un-avoidable. So I see that motor controller being fried after a few good hard waves with water intrusion. Maybe someday all these electronics can be sealed and still get the necessary cooling. Just my input is all, but absolutely love the creativity combined with searchable knowledge! Kudos!
I appreciate your comment! Sealing all the batteries from the water and ironically water cooling them is a must for sure! This was a fun prototype though!
Very clear thinking Zach. You have good basic understanding and that lets you get to the next level. I'm thinking those battery trays or a more robust design would be ideal to build with conductive sockets and perhaps capacitor arrays to protect from surging circuits in acceleration and deceleration. But for prototyping faster I don't want to be too critical. I'm just thinking of pounding waves dislodging those magnets in bad ways as they are conductors as well.
I love all things motorized but a two stroke is just so well suited for this application. Regardless it’s a cool project. Hopefully we will have better battery tech in a decade or two but for now it seems we’ve pretty much plateaued.
Great video and cool DIY. I worked for a company that converted a jet ski with an HPEVS AC induction motor about 15 years ago or more. A few things I would recommend are a torque converter, a proper bms - yours doesn’t seem to do anything other than monitor cell voltage, a stronger motor mounting system, and an actual lithium battery charger (not two DC-DC converters). Lithium batteries have a different charging curve than lead acid which is super important to recognize.
Easily the best ev conversion video I have watched. Everything was explained super well and was easy to understand. This was an awesome project that you went all of the way on! You earned a sub! Keep up the good work!!!
Very well explained. You covered a lot of information in this video. Beside the technical information, I really liked your pronunciation and using very simple and easy English. I will save this video and can use this information in my projects.
As a marine engineer I've been working the last three years full time on converting and building new watercraft. Your design choices are really interesting. Your attitude is what made it work in the end. However a small disclaimer would have been in place I believe. It will start to get interesting if a lot of jetskis are converted like this. You have earned my subscription, looking forward to your future projects!
I was in the Army - my cousin was a Marine. He also drove a train - a Marine Engineer. Full time working on an "invention" for THREE YEARS - and you got SWAMPED by a young man in his garage - Bright guy...
"As a Marine engineer" This is more electric propaganda. This battery powered boat is extremely underpowered, has basically no range, and is over amped for the amount of battery's installed.
The spider in your coupling is probably tearing because of your motor alignment. You can hear the vibration - which is a pretty large loss in power output and longevity of your motor bearings and coupling. You can make a mounting plate with some jack bolts to adjust the alignment and you can do a rough alignment with a straight edge or get it near perfect with a laser aligner. Could also be issues with the shaft connecting the prop or bearings further down
As soon as you said “18650”, I thought, “How will he ever locate a bad cell?” Glad I kept watching! Excellent work, young man!! 👍🏼 Edit: find an old tire and grind out a replacement for that spider gear 👍🏼
when you see fire you know where the hotspot or bad cell is. thats why tesla uses a fuse wire on every cell. to be safe. but all in all, he did great. very nice project.
@@johanv4668 Storage yards have to charge for extra space around a wrecked Tesla because they have been known to spontaneously ignite days after being parked. 🫤 Edit: added “wrecked” 👍🏼
Amazing job! but you completely missed one of the most important aspects of a watercraft RPM. the first thing you should've been conscientious of was how many rpms your old gas motor was turning. Since your old gas motor is spinning at higher RPM's than the electric motor, you need to adjust the pitch on your prop on your jet pump. And since you have a electric motor, which has wayyyy more torque than a 2 stroke gas motor. It will make up for the amount of RPM's you lost, if you have a higher pitch prop on your jet pump. You can make that ski go way faster than what it's going.
Your video is organic, & you’re on to something…If the manufacturer’s can simplify the design kinks, this would make a great scenario…I’m sure a battery-motor set up “specifically designed” for marine application would address this…thanks
You going places in life. I’m so glad to see you doing what you love. I wish I had the brain power at your age, at 53 I’d be able to just help others and have no other worries of how to retire. Hope all young men and woman in your generation pay attention. If you do read this tell your parents , thank you. They did a great job raising you..
Man that was awesome to watch! It's hard to really know how it sounded (watching this on my phone), but it seemed kinda noisy... well, louder than I expected. I thought the balance of the craft might be out with so much more weight in the front but it seemed fine.
I'm glad you did this project so that I don't have to 😂😂😂😂 I've been considering something like this for one of my projects / videos, but I think I will stick to gas engines in my projects for now. Thanks for the great video !
Nice storey. Well done and thanks for taking the time to post it. Now all you need to do is add a hydrofoil system - it'll reduce your drag by up to 70%... It would be interesting to see how many cells you could have got in the original fuel tank... But you'd probably need a good 2 x improvement on volumetric energy density of the Li cells to make that work...
That was AWESOME! I was thinking about converting an old sailboat to electric when the diesel goes out. I think in 3-4 years when it does, prices will have dropped dramatically. Definitely saving this video for the future. Great Job!
I'm an engineer and after a fairly long career in machine design, i found plant maintenance. You'd be awesome working in plant maintenance. That entire process, the motor mounts that didn't work, etc.. you kept going and learned a lot. If your RUclips career doesn't pan out and you're looking for a career change, check it out. Jobs are usually listed as electro-mechanical tech or maintenance tech. Not preventive maintenance though, that's boring!
Wow! That's not a vehicle that I thought anyone would be interested in EV swapping, but man, your build is impressive! How long could you ride before the battery pack was flat?
you could go about 30 minutes, but probably would run into overheating before draining the batteries all the way! I'd use larger wires. The battery cells themselves actually didn't generate too much heat ( some other chemistries for more capacity but less discharge amps like 7amp max, would generate heat faster at the same amp draw. I did some testing with other cells first, but ran out of time to show that in the video ) :P
Amazing build. Very dedicated. I looked at making my own battery recently for bike trailer, but price of battery and all the rest + time, rack mounted batteries with all the electronics ready to go is about the same price without the time to build. Plus of that is I can take it out of trailer and mount it in my garage for use with my house solar. SeeDoo built from ground up for EV would probably do pretty well. Especially if you can park it in your garage and hook it into to power home as well.
Dude, what a fantastic build! I liked the software you used to make a motor mount. Do you think I could use it to modify a ring gear for an RC car? I have a build I'm doing and I want to use some bigger output shafts since the stocks ones weren't a versatile as the ones I planned to use.
Love seeing these conversion videos, sure cost wise is not even close to getting a new ICE engine, but it does show what can be done and what a Manufacturer could offer. Great work :)
Amazing build.. I worry about your Chinese cells built that big.. Terrible experiences building packs with 18650.. I always try and use the minimal number of cells I can get away with any project. For eg. headways where you can get 200amps per cell and each cell is 8ah. Much more stout connections too.. I figure with vibration and all the hammering in a seadoo.. you're connections in those batteries will fail in short order and upon a few charges you will ruin adjacent cells.. Also no BMS will be a true nightmare to charge those batteries..
I attempted 18650 in rc cars, they don't like a strong draw. When I geared it up for more top speed it almost burned my rc car to the ground. But I always use Velcro straps on all my lipo batteries so I can get them out in a hurry when I need to
Agree. Also with those cheaper cells I have had about a 15% early failure rate. And 500 cycles on these....maybe at 0.2C discharge, but at 20A....no way.
SO cool man. I see the big guys are starting to make these but theyre insanely expensive. Hopefully the economies of scale will bring the tag down over the years.
Salt water and electronics do not play well together. Maybe for a very short term, but that pesky salt *will* destroy your electronics. Every single time.
I remember seeing this video when it came out, it just popped up again and i went to the channel to see if you had any new projects, only to see you haven't uploaded, home alls well man.
Amazing video and a lot to improve on that project. I think you can compromise on capacity if you use higher discharge rated batteries and get the voltage much higher as you already said by connecting more in series. I am currently running almost the same exact project in Greece and you cannot imagine how much you help with that video.
As someone new to the electric motor world. This video was very informative. I don't have a deep cell boat battery available to me to build a diy spot-welder though. That motor is intriguing though. Imagine that on a motorbike frame. Something light...
Back in 2000 I built a Yamaha Wave runner 3 person into a Ultra lite. The first thing was the weight of this hull, 240 lbs. with Nothing in the hull. This was not going to work. So the hull mould was made. Carbon/Kevlar & honeycomb vacuum bag we go. 65lbs later we began the build. She had a very hard time getting up to plain, over 30 seconds of full power( rotax 582 aircraft engine) and she picked up speed. So I knew the hull was needing some help. I used thin fiberglass under the hull extending outboard another 5" and curved upward in the bow, like a water ski. Back testing this out, 5 seconds of power she was on top running great. Top speed take off, 26mph and were up. 6,000 feet in minutes. So what I'm saying here is, make the hull change as above. Good luck.
Good work plugging away at this, but really need to secure those batteries A LOT better no one just cruises a jet ski. Plus those XPs are way to much fun to guarantee its not getting capsized.
Excellent job Zach & great vid of all ur processes. I wonder if u could use 3 x server rack style batteries in series to get around 150vdc (lipo4), it would make for an easier overall process & weight distribution. That was a lot of work, respect. Cheers
Looks like a great project. Seems a bit heavy but you probably get a good run time? On the model RC jetboats high discharge C rated batteries really help for good performance.
Man I love to tinker and this is right up my alley, there are some jet skis that don’t have motors on marketplace by me so I’m thinking of trying something like this. Thanks for the video!!!!
As a fellow developer I applaud your success....High Praises and congratulations! And though you've given notice on reuse of that motor on other projects I'd like to encourage you before moving on........... A couple of suggestions if I may: Those "love joy" type couplings you're using are finicky and though they can be a good start the prime mover and output shafts STILL HAVE TO BE IN PERFECT ALIGNMENT or they will F-A-I-L . Yours I'm afraid are not aligned, hence the kogging effect, that horrid sound you're hearing and too a BIG loss of efficiency output. A suggested use of a 'u-joint' type coupling will serve you much better, are more forgiving and far less finicky overall (something in the order of a CV Joint/axle). Lastly if possible, might I suggest shifting some ballast toward the aft. It may help on planning.
Very cool project! Thank you for sharing it with us! If you should try such a project again in the future, I might suggest you take the easy way with the battery pack and buy - in this case - five Tesla battery packs from a wrecked Tesla. It's important that all the modules come from the same pack, so they are all equivalent and have the same amount of use. But, those can be had for about $450 each including shipping. They are very compact, solidly built, and easily connected together in series for the desired voltage. This would have also saved you a lot of time and effort, even if it might have cost a little more. Still, I enjoyed watching you put this project together - much more interesting than watching you drop a replacement motor that cost $900.
Thank you for spending your time, money + positive energy,by not being negative (see what I did??? 🤣) I have been thinking of doing this to several different modes of transportation! After watching your investment of everything I decided to go back to the good ole suck,squeeze,bang,blow motor with a transmission....both is a boat & a snowmobile
Grainger has all kinds of e-motors and some that are okay for water. Figuring out the right specs for motors and battery packs is the tough part for sure. Most conversions I saw were basically trolling speeds. But it can be done if done right.
I’m really impressed with your ingenuity on this project. It’s really amazing at what you can find on the internet to find what you need. Your hard work payed off in the end but like you said, was it worth the money spent to help save the planet? I’m a first time watcher and I enjoyed this video.👍👍🇨🇦
Hey, this was an excellent and entertaining vid. I’m just windowshopping for a 2nd hand watercraft now, and was curious about an electric conversion; you did all the footwork for me, lol! My only suggestion is that it’d be awesome to see you wearing proper eye protection when using the tools.
Glad I found this video, probably have to wait for better battery technology to make it worth it. Thanks for doing the leg work to determine the viability.
I thoroughly enjoyed this. I have great ideas but near zero electrical engineering knowledge & experience. I really like the idea of projects that drive innovation with off the shelf tech. Technological alchemy. 🤓🤔😎
![Twenty One Pilots - The Line (from Arcane Season 2) [Official Audio]](http://i.ytimg.com/vi/XCz7WUotXs8/mqdefault.jpg)
Finally Someone took my build to the next level. Great job on the outcome! Next person will have to focus on the budget numbers to make this homebrew a DIY hack all should build! Great Job Zach
No kidding... it's an amazing build, right?
English not my native language but, if we build conversion kits to sell around world, will be a great business.
I watched all your videos before doing mine! :) Standup E-ski: ruclips.net/video/Lt0ocjGOkcQ/видео.html
Max Speed: ~35 mph
Max RPM: ~6,000 rpm
Runtime: ~30 minutes
Weight added: +50 lbs
Battery Voltage: 128 volts
Hopefully people will see these stats, I should have put in the end of the video!
@CBDC CHRIS 🤣
To take advantage of the higher torque out of your motor, you could swap the impeller from I believe was the 717 engine that ski came with with the 787cc impeller, it has tighter pitch, you’d also need the 787 impeller shaft kit for the jet pump. Easily doable.
So I have built a number of electric vehicles. That much power (66kw) by my calculation should have been a lot more impressive then what you are experiencing. I hate to say it, man, especially since it's a year after you post this video, but I think your controller isn't programmed properly. The heat building up is also a sign of improper programming. I know it takes a lot of power to push through water at high speed but the torque off the line should be pretty insane with 66kw of electric power. I don't know if you have moved on from the project but you might want to have another look at your programing. You could be sitting on a real monster and not even know it.
Jet pump efficiency is the problem, 35-40%
If not that, he needs to check the drivetrain. One tiny piece of grass stuck in the impeller will stop my jet ski from planing and normally it gets up to 50mph. This is very high precision stuff. I think the motor you have can do it!
Nobody cares
@@PaulGait-py5yb I care 😉
@@33jayy prove me wrong
Zach, the seadoo itself has a max load capacity as well. If you weigh less than the max load capacity then you can add the remaining capacity after subtracting your weight to the weight allowed for batteries.
I'm not certain if you are an engineer, but if you aren't (you missed a good opportunity professionally), you did a pretty good job on this project.
i love how ya did the spot welding bc didnt have one! i used a microwave transformer and rewound the secondary 3 turns with some think(cant remember gauge) wire and copper brake line for my electrode end fabed to a nice thick point. i just always have to respect the simple guy/girl working from a small garage with what they got! respect! lol
Love this! And your roll your own spot welder is pure genius!
One issue that I didn't see any mention of in your video is about thermal management of the batteries. Lithium-ion batteries are subject to thermal runaway which can cause the entire battery pack to catch fire. There are three basic ways that a battery could suffer a thermal runaway, but in your case the most likely cause is that the battery internal temperature gets too high. This is due to high internal heat generation from running at the maximum continuous amps combined with the fact that your sealed plastic battery boxes and foam pieces are actually thermally *_insulating_* and so make it difficult for heat generated by the batteries to escape.
My suggestion is that at a minimum, you figure out a way to put a temperature sensor inside each of the battery boxes and connect them to something that will sound an alarm if the temperature inside any box reaches a maximum safe temperature. The sensor should be buried in the middle of the battery pack since this is where the temperature is likely to be the highest.
You can also make some modifications to better manage the heat. A simple way is to simply blow air over them to add some forced convection. Another improvement would be to drill a hole in the lid of each battery box and a second hole in the side near the bottom. This would pull air in the hole in the bottom and as that air is heated by the batteries, it rises and exits out the hole in the lid. To keep water out, you could put a riser tube from PVC pipe in the bottom hole and going up to at least the top of the box. Doing both of these would be even better. The ultimate would be to blow air into a box on the underside of the battery area lid and then run small air hoses from the air box to the bottom holes in each battery box to add forces convection directly inside the battery boxes.
And for the ultimate thermal management system, you could use the fact that you are operating in a huge body of water, and add a water cooling system that takes lake water and pumps it through copper tubing inside the battery boxes. Only tubing inside the boxes would need to be copper. The rest of the water lines could be PEX tubing. Likely this would be major overkill, but it would definitely be a technical tour de force.
Again great video!
BTW, I am in the process of designing away to take an old commercial walk-behind mower being sold for cheap because the gas engine is shot and convert it to battery-electric. This would involve 5 electric motors, one for each of the three blades and one for each of the rear wheels. The blade motors will have a controller that varies current to keep the rpms of the blades constant. By having a motor for each rear wheel with its own throttle, I can turn the mower by differential throttling of the motors. I could just use one large motor to directly replace the gas engine, but then I would have to retain the pulley and belt system from the original gas engine configuration that just adds to maintenance. My biggest effort is designing the battery pack to have enough energy to mow my large yard while also being able to provide enough power to drive the motors. Right now my leading candidate for the battery is a lithium-iron-phosphate (LiFePO4). These have the advantage of having very high maximum specific power at the cost of a reduction in specific energy. Their greatest benefit is that the are faaaaar less susceptible to thermal runaway. And the electrolyte they use isn't flammable, so even if they do have a thermal runaway, the result should be just a venting of vapor without catching fire. Your video has been enormously helpful in my efforts to design my battery pack. Thanks!
You don't know what your saying. Lifepo batteries and heat have parameters but seriously you obviously are an arm chair captain. Go make your own projects.
bms can monitor temp etc
First of all, great video. Some words of advice though for all of those out there thinking of doing something similar. When assembling a battery pack made out of cells like 18650 you absolutely need to group them according to their voltage, charge single cells if necessary. Also you should measure each individual cell's voltage and find potentially bad cells. There are many good videos explaining the professional assembly process of battery packs.
This is a cool video. Being a big personal watercraft fan and having a lot of experience with 1990s Sea-Doos, I will say that your ski is a 1995 Sea-Doo XP that had a 720 cc Rotax. That engine, when new, was capable of 85 hp. It would also spin close to 7800 RPMs. That would give it a top speed, in perfect conditions, trimmed up and leaning back, of about 54 mph. You definitely have the power of the electric motor it just seems you need the RPMs. And that coupler is getting trashed. Pay close attention to alignment. Very cool video.
The issue you're having with the coupling, is that you're out of spec for alignment of the spider type coupling.
You might try a polyurethane tire coupling. They allow for a high degree of misalignment.
FANTASTIC video! I love all the details you included such as where you purchased parts from, why you chose them, and how much they cost, as well as the details for how you did the build. So many videos skip so much important stuff. I learned a ton from watching your video and loved how you DIY not only your own battery pack but your own spot welder! I hope you make more content like this!
Thanks to RUclips algorithms for recommending this video! Searched for three years, there were no good examples! I have the same jet ski, even colors and years, but not XP but GTI! I have long dreamed of transferring it to electric, I have even bought a motor! In the video, everything is done very competently, everything is super, except for the battery! the battery in the electrical theme is 90% success! Lithium iron phosphate prismatics in blue cases are highly recommended! they give more current, do not heat up, and are not very afraid of the cold, and they need less quantity! It is important to seal all wire connections against water! I really liked that the author taught the culture of weight! according to my calculations, about 80 kg is allocated, this is about 15 kWh of energy Thanks for the video, good luck! Subscribed!
Congratulations, I am an engineer and I admire your way of thinking and daring to go so far!!!
Also, another logical detail, that everyone know, but to mention for future builders: fix all bateries and elements, and make covers water tight / sealed, as much as possible, in case you turn over in water (thats not unusual). Water could destroy almost everything inside (particularly salt water). In any case, ruff ride over waves, can throw things inside left/right, so fix them as much as possible. Excellent project - Bravo! Regards from Serbia
Fantastic build man, it was great to follow along step by step. I really like that your not afraid to be honest about when things didn't work out... some creators are too proud but i think its cool to see the stumbles along the way to the final build.
Yeah most youtubers try and mislead those that aren't too mechanically inclined. Like it all came together with no hiccups. Especially the young youtubers. The ones that you know damn well were learning about the same speed as the viewer. . They also talk the whole time like you can't see wtf they are using and doing. If your good at using objects in view for size reference then you can mostly judge how large an object is. A little off topic on the last part. Sorry
Awesome job! But for the price you could've put like 6 seadoo motors in that thing but watching this and doing that DIY build and learning stuff is well worth it!!! You got something unique now.
Knowledge is priceless! 😉
@@ZachsGarage1 So is the instant torque.
@@WindFireAllThatKindOfThing Yeah, but in a jet ski the instant torque doesn't translate like it does with car or bike. The jet pump inherently lags, especially if you want any top speed. It's still an awesome project though and probably something we'll see in the future from powersports manufacturers.
Could you have used lipo batteries like the ones we use for the quad copters or is that to dangerous 😂 because a 6s battery fits in my palm and produces 25.2 volts? 5 in series 30s? (I’m not an electrician)
@@FriendlyBassHunter It's a fair question, I think he'd need 40 6s 5000mah packs to get the same voltage and capacity as his 1st battery, (4x 6s in series with 10x in parallel) remember he had to add a few more too, so 50-60 packs to be usable. I think the 18650's are a less expensive option, but I could be wrong.
Zach, you are a genuine hero. It was great fun to watch your fascinating journey of PWC conversion.
Hero? WTF are you smoking?
Just be careful running the jet pump at that high of an rpm, for that long, out of water. Awesome Project Build! Came out Great!
Also i know it sounds like a bad idea bc of wires and metal.. But using metal battery boxes or some fire proof plastic, would work good and double as being a fire protection battery box, if a lipo battery cell assembly was to puff up or catch fire. I've seen some 4s & 6s rc lipo batteries go bad, usually nothing but sometimes smoke.. but fire isn't common but if you google for pictures you will see examples of it happening.. its a lot of power an a lot of Amps being pulled from the batteries and wiring.
If you have an electric setup thats super reliable and ride it alot in the summer, it saves alot of money on gas especially for a 2-stroke. 5 rides in with $4.25 a gallon is roughly $25 or more per boating day which is probably $1000 per summer which is insane. 1 Hour of runtime is acceptable because 2-stroke skis only get about 1 hour or so, 2 hours if conservative on fuel.
Guess you missed the part where it’s slower than a 4hp on a row boat …. Literally
Freaking obd2 scanner to check rpm ?? Sure bud congrats glad I skipped to the end …. Haha
@@RobinIrving-cr4ug It’s cool innovation having an electric jet ski. We already have electric cars and boats with electric outboards, slower is fine, if you want more power just increase the voltage even more. People fail to understand how awesome electric vehicles are. They are easy to build, don’t pollute, and can be made compact.
Awesome project! There may be some batteries from salvage EV's that you could have bought to save you some time. On second thought you probably took that into consideration and found that either the weight or the cost would not make sense. I found this episode a lot more interesting than some science TV shows. Great job!
a tesla batterie is made out of 18650 battires that are connected together...
people buy the 18650 from the factorys..
they are sold cheaper if they does not meet the standars..
you can probetly buy a pallet of batteries you sort in to a couple of standards, for the same price that he paid for his batteries..
it is probetly more from hybrid cars the batteries can be used, because of the size and weight.
but those have value for other hybrid car owners
thunderstruck sells used ev batteries. i got some ought of some smith trucks, rated 84v
Exactly. To combat the moisture problems that come with interacting with a body of water, just put four wheels under it and use it on dry land. Add a cooling system. For rider comfort, just enclose the passenger compartment with door access and put an cargo area on the back. Increase the engine HP to go faster or haul more stuff. To save a bunch of time just buy a made in America Ford F150 since trying to do new things is for losers who read books.@@BOSS_DOG
best part of the video is to see your excitement and happiness when it came to testing,...
Some job Zach. I’ve never ever though about how much goes into the creation of batteries and pairing a motor. It’s insane
Fantastic video and build! Run time could be expanded by expanding battery obviously. What I like about this is the cost savings to have some fun. A set of solar panels can keep your operating costs to a minimum. You also have an emergency power supply in the event of an outage at your home.
For all those people who don't fully understand just how powerful and useful those "dirty" gasoline engines really are! Excellent build sequence and I'm sure whichever engineering school you go to will be happy to have you. ;)
It just proves how inefficient jet-skis are by design. That much power spinning a prop would have you going 50knots. Jetski engines are actually pretty massive.
And currently there is no viable alternative to all of those dirty and inefficient gasoline engines. And there won't be anything available anytime soon either
@@timrussell1559 - I tend to agree, except that things are evolving very quickly in this space right now, as a result of all the money going into EV development. NASA claims to have a safe battery chemistry with gravimetric energy density high enough for commercial aircraft...that oughta move a PWC just fine.
@Nathan Smith - That is a fact, and one reason why I think it is inevitable that both options will exist for many years to come.
@Nathan Smith would you consider biodiesel or ethanol to be a petro chemicals?
Cool project; remember water and HV can be problematic. Thanks for enriching the interweb. Inspiration for alll.
That was a pretty awesome project! 🤩
A few tips if you ever need to build a big lithium pack again:
While 18650 cells were the go to size for a long time these days you might want to look for 21700 cells, they are a bit bigger and tend to be a bit cheaper for the same total capacity (also more capacity per cell means a little less welding)
for the spot welder you can get ready made modules that use a bunch of MOSFETS instead of a relay for switching the welding current giving you more consistent results...
If there is one thing that I must respect, is your persistency and drive!
WOW! ... just WOW! You crammed a TON of great stuff into this video. Excellent job with the mechanical and electrical bits! Oh, and very cool how nicely the battery boxes fit inside! I'm subscribing!
Great EV Build, I really appreciate all the technical details and the lessons learnt on undervoltage.
I wonder if converting the seadoo to a hydrofoil would be possible. Greater efficiency on some watercraft. Great work!
And keep it at 82hp.
Very cool video! This brought back my creative side that I was born with, though @ 70 long in misuse. I had 3 different jet-ski rental business's in Florida, I jet-skied to work. Jet-skis were my life. Watching all this and your fantastic explanation of each step kept me mesmerized. Great job! I will leave with "The One" question not answered. All jet-skis and water-craft will Always have to deal with Water intrusion, it's un-avoidable. So I see that motor controller being fried after a few good hard waves with water intrusion. Maybe someday all these electronics can be sealed and still get the necessary cooling. Just my input is all, but absolutely love the creativity combined with searchable knowledge! Kudos!
I appreciate your comment! Sealing all the batteries from the water and ironically water cooling them is a must for sure! This was a fun prototype though!
Very clear thinking Zach. You have good basic understanding and that lets you get to the next level. I'm thinking those battery trays or a more robust design would be ideal to build with conductive sockets and perhaps capacitor arrays to protect from surging circuits in acceleration and deceleration. But for prototyping faster I don't want to be too critical. I'm just thinking of pounding waves dislodging those magnets in bad ways as they are conductors as well.
I see now why it took so long to get this video out. you did a ton of research! well done Zach! I'm impressed!
I love all things motorized but a two stroke is just so well suited for this application. Regardless it’s a cool project. Hopefully we will have better battery tech in a decade or two but for now it seems we’ve pretty much plateaued.
Great video and cool DIY. I worked for a company that converted a jet ski with an HPEVS AC induction motor about 15 years ago or more. A few things I would recommend are a torque converter, a proper bms - yours doesn’t seem to do anything other than monitor cell voltage, a stronger motor mounting system, and an actual lithium battery charger (not two DC-DC converters). Lithium batteries have a different charging curve than lead acid which is super important to recognize.
Great project. Well done. Few more years of battery advancement and these kinds of conversions will be a no brainer.
Easily the best ev conversion video I have watched. Everything was explained super well and was easy to understand. This was an awesome project that you went all of the way on! You earned a sub! Keep up the good work!!!
Thanks man!
Very well explained. You covered a lot of information in this video. Beside the technical information, I really liked your pronunciation and using very simple and easy English. I will save this video and can use this information in my projects.
As a marine engineer I've been working the last three years full time on converting and building new watercraft. Your design choices are really interesting. Your attitude is what made it work in the end.
However a small disclaimer would have been in place I believe. It will start to get interesting if a lot of jetskis are converted like this. You have earned my subscription, looking forward to your future projects!
I was in the Army - my cousin was a Marine. He also drove a train - a Marine Engineer.
Full time working on an "invention" for THREE YEARS - and you got SWAMPED by a young man in his garage - Bright guy...
Love this comment.
@@r.a.monigold9789 Stand down soldier.
"As a Marine engineer" This is more electric propaganda. This battery powered boat is extremely underpowered, has basically no range, and is over amped for the amount of battery's installed.
@@MiddlePark so it seems this is Grinch's alias outside of Christmas season.
Love this! Only suggestion I have is perhaps adding a reserve battery pack to get back to shore if you need it in an emergency…
This guy has mastered the art of looking like he's speaking another language while he dubbs over himself in English
I thought he was high whilst speaking
The spider in your coupling is probably tearing because of your motor alignment. You can hear the vibration - which is a pretty large loss in power output and longevity of your motor bearings and coupling. You can make a mounting plate with some jack bolts to adjust the alignment and you can do a rough alignment with a straight edge or get it near perfect with a laser aligner. Could also be issues with the shaft connecting the prop or bearings further down
As soon as you said “18650”, I thought, “How will he ever locate a bad cell?” Glad I kept watching! Excellent work, young man!! 👍🏼 Edit: find an old tire and grind out a replacement for that spider gear 👍🏼
when you see fire you know where the hotspot or bad cell is.
thats why tesla uses a fuse wire on every cell. to be safe.
but all in all, he did great. very nice project.
@@johanv4668 Storage yards have to charge for extra space around a wrecked Tesla because they have been known to spontaneously ignite days after being parked. 🫤 Edit: added “wrecked” 👍🏼
Amazing job! but you completely missed one of the most important aspects of a watercraft RPM. the first thing you should've been conscientious of was how many rpms your old gas motor was turning. Since your old gas motor is spinning at higher RPM's than the electric motor, you need to adjust the pitch on your prop on your jet pump. And since you have a electric motor, which has wayyyy more torque than a 2 stroke gas motor. It will make up for the amount of RPM's you lost, if you have a higher pitch prop on your jet pump. You can make that ski go way faster than what it's going.
Wow what an amazing job! Can’t believe you worked it all out. Very fun to watch and see come to life. Well done brotha
Your video is organic, & you’re on to something…If the manufacturer’s can simplify the design kinks, this would make a great scenario…I’m sure a battery-motor set up “specifically designed” for marine application would address this…thanks
Well done mate. Great that you have gone into all the details. Inspires me to kick off a project of my own. Keep up the good work
I run 14s 20p on my electric mountain boards. This projects looks super cool. You really should be using Pelican cases for batteries.
Great work! Had a fun time watching this. I was having bad thoughts when I imagined Lithium mixing with water, haha.
You going places in life. I’m so glad to see you doing what you love. I wish I had the brain power at your age, at 53 I’d be able to just help others and have no other worries of how to retire. Hope all young men and woman in your generation pay attention. If you do read this tell your parents , thank you. They did a great job raising you..
Good job! It could be even a little better, using a water cooled motor and motor controller as you will have all the cooling media needed available.
Man that was awesome to watch! It's hard to really know how it sounded (watching this on my phone), but it seemed kinda noisy... well, louder than I expected. I thought the balance of the craft might be out with so much more weight in the front but it seemed fine.
I'm glad you did this project so that I don't have to 😂😂😂😂 I've been considering something like this for one of my projects / videos, but I think I will stick to gas engines in my projects for now. Thanks for the great video !
Nice storey. Well done and thanks for taking the time to post it. Now all you need to do is add a hydrofoil system - it'll reduce your drag by up to 70%...
It would be interesting to see how many cells you could have got in the original fuel tank... But you'd probably need a good 2 x improvement on volumetric energy density of the Li cells to make that work...
I am so happy 2 see we have such intelligent young adults out there
my only concern was mounting the batteries in case of a roll over of the craft ?
That was AWESOME! I was thinking about converting an old sailboat to electric when the diesel goes out. I think in 3-4 years when it does, prices will have dropped dramatically. Definitely saving this video for the future. Great Job!
You probably have 3 to 4 weeks at best
Check out Sampson Boat Company. Leo powers his rebuild with a hybrid system. Worth a look👍
bhy bew elrric sail boat eterr speed rabfe
I'm an engineer and after a fairly long career in machine design, i found plant maintenance. You'd be awesome working in plant maintenance. That entire process, the motor mounts that didn't work, etc.. you kept going and learned a lot. If your RUclips career doesn't pan out and you're looking for a career change, check it out. Jobs are usually listed as electro-mechanical tech or maintenance tech. Not preventive maintenance though, that's boring!
Wow! That's not a vehicle that I thought anyone would be interested in EV swapping, but man, your build is impressive! How long could you ride before the battery pack was flat?
you could go about 30 minutes, but probably would run into overheating before draining the batteries all the way! I'd use larger wires. The battery cells themselves actually didn't generate too much heat ( some other chemistries for more capacity but less discharge amps like 7amp max, would generate heat faster at the same amp draw. I did some testing with other cells first, but ran out of time to show that in the video ) :P
Amazing build. Very dedicated. I looked at making my own battery recently for bike trailer, but price of battery and all the rest + time, rack mounted batteries with all the electronics ready to go is about the same price without the time to build. Plus of that is I can take it out of trailer and mount it in my garage for use with my house solar. SeeDoo built from ground up for EV would probably do pretty well. Especially if you can park it in your garage and hook it into to power home as well.
THIS is the answer! Way to go Zach. Never stop creating and inventing...
Thank you for sharing!
Grate Prodgect!!! Very important thing you explained people that electric power now still more expensive then combustion engines .
Dude, what a fantastic build! I liked the software you used to make a motor mount. Do you think I could use it to modify a ring gear for an RC car? I have a build I'm doing and I want to use some bigger output shafts since the stocks ones weren't a versatile as the ones I planned to use.
Awesome build - a bit of Tef-Gel on all the fasteners and couplers will save lots of frustration later
You could also add a transmission or gear ⚙️ to gear drive to change the ratio of speed to make a smaller motor work...
Great work, keep it up
e propulsion conversion for boats will be a huge industry within the next decade. thanks for your early leadership and vision for this! ~tgb
Love seeing these conversion videos, sure cost wise is not even close to getting a new ICE engine, but it does show what can be done and what a Manufacturer could offer.
Great work :)
Amazing build.. I worry about your Chinese cells built that big.. Terrible experiences building packs with 18650.. I always try and use the minimal number of cells I can get away with any project. For eg. headways where you can get 200amps per cell and each cell is 8ah. Much more stout connections too.. I figure with vibration and all the hammering in a seadoo.. you're connections in those batteries will fail in short order and upon a few charges you will ruin adjacent cells.. Also no BMS will be a true nightmare to charge those batteries..
I attempted 18650 in rc cars, they don't like a strong draw. When I geared it up for more top speed it almost burned my rc car to the ground. But I always use Velcro straps on all my lipo batteries so I can get them out in a hurry when I need to
Agree. Also with those cheaper cells I have had about a 15% early failure rate. And 500 cycles on these....maybe at 0.2C discharge, but at 20A....no way.
Good on you for following through with the project
1000A around water = genius!
SO cool man. I see the big guys are starting to make these but theyre insanely expensive. Hopefully the economies of scale will bring the tag down over the years.
Salt water and electronics do not play well together. Maybe for a very short term, but that pesky salt *will* destroy your electronics. Every single time.
Does he swim in a salt lake?
Greenline yachts seem to have it under control
Golf courses on salt water coastlines around the world. Golf world figures it out but others can't?
There are a lot of electric jet surf boards last dacade at the Sea...still working
@@ivicamilosavljevic4706 solar on sailboats is a standard for years. T
I remember seeing this video when it came out, it just popped up again and i went to the channel to see if you had any new projects, only to see you haven't uploaded, home alls well man.
Gas all day
Horses are more efficient
For now. Internal combustion is just way too dirty. They are on there way out. Electric is like instant torque.
Amazing video and a lot to improve on that project.
I think you can compromise on capacity if you use higher discharge rated batteries and get the voltage much higher as you already said by connecting more in series.
I am currently running almost the same exact project in Greece and you cannot imagine how much you help with that video.
As someone new to the electric motor world. This video was very informative. I don't have a deep cell boat battery available to me to build a diy spot-welder though. That motor is intriguing though. Imagine that on a motorbike frame. Something light...
Back in 2000 I built a Yamaha Wave runner 3 person into a Ultra lite. The first thing was the weight of this hull, 240 lbs. with Nothing in the hull. This was not going to work. So the hull mould was made. Carbon/Kevlar & honeycomb vacuum bag we go. 65lbs later we began the build. She had a very hard time getting up to plain, over 30 seconds of full power( rotax 582 aircraft engine) and she picked up speed. So I knew the hull was needing some help. I used thin fiberglass under the hull extending outboard another 5" and curved upward in the bow, like a water ski. Back testing this out, 5 seconds of power she was on top running great. Top speed take off, 26mph and were up. 6,000 feet in minutes.
So what I'm saying here is, make the hull change as above. Good luck.
Good work plugging away at this, but really need to secure those batteries A LOT better no one just cruises a jet ski. Plus those XPs are way to much fun to guarantee its not getting capsized.
Excellent job Zach & great vid of all ur processes. I wonder if u could use 3 x server rack style batteries in series to get around 150vdc (lipo4), it would make for an easier overall process & weight distribution.
That was a lot of work, respect. Cheers
Looks like a great project. Seems a bit heavy but you probably get a good run time? On the model RC jetboats high discharge C rated batteries really help for good performance.
Im visualizing some flex in your motor mount at higher speeds probably rough on the spider.
Great job man!
for batteries its always worth looking at old hybrid car packs, they're usually 48v per pack and can be picked up really cheap.
Man I love to tinker and this is right up my alley, there are some jet skis that don’t have motors on marketplace by me so I’m thinking of trying something like this. Thanks for the video!!!!
As a fellow developer I applaud your success....High Praises and congratulations! And though you've given notice on reuse of that motor on other projects I'd like to encourage you before moving on...........
A couple of suggestions if I may: Those "love joy" type couplings you're using are finicky and though they can be a good start the prime mover and output shafts STILL HAVE TO BE IN PERFECT ALIGNMENT or they will F-A-I-L . Yours I'm afraid are not aligned, hence the kogging effect, that horrid sound you're hearing and too a BIG loss of efficiency output. A suggested use of a 'u-joint' type coupling will serve you much better, are more forgiving and far less finicky overall (something in the order of a CV Joint/axle). Lastly if possible, might I suggest shifting some ballast toward the aft. It may help on planning.
Young man you have a bright future ahead of you. Keep up the good work.
It’s amazing that he can just beg and get it for less than half the original cost!!
What a lucky bastard!
25:55 'Silent' was the best ever dude! sooo much giggle out of that.
So super jealous that's the coolest dump trailer I've ever seen I absolutely love it
AMAZING PROJECT EFFORT, AND YOU MANAGED TO FILM AND EDIT. GENIUS!!!
Very cool project! Thank you for sharing it with us!
If you should try such a project again in the future, I might suggest you take the easy way with the battery pack and buy - in this case - five Tesla battery packs from a wrecked Tesla. It's important that all the modules come from the same pack, so they are all equivalent and have the same amount of use. But, those can be had for about $450 each including shipping. They are very compact, solidly built, and easily connected together in series for the desired voltage. This would have also saved you a lot of time and effort, even if it might have cost a little more.
Still, I enjoyed watching you put this project together - much more interesting than watching you drop a replacement motor that cost $900.
It's not more expensive in short-long run...fuel cost... Great build and quality video!
Thank you for spending your time, money + positive energy,by not being negative (see what I did??? 🤣) I have been thinking of doing this to several different modes of transportation! After watching your investment of everything I decided to go back to the good ole suck,squeeze,bang,blow motor with a transmission....both is a boat & a snowmobile
Grainger has all kinds of e-motors and some that are okay for water. Figuring out the right specs for motors and battery packs is the tough part for sure. Most conversions I saw were basically trolling speeds. But it can be done if done right.
I’m really impressed with your ingenuity on this project. It’s really amazing at what you can find on the internet to find what you need. Your hard work payed off in the end but like you said, was it worth the money spent to help save the planet? I’m a first time watcher and I enjoyed this video.👍👍🇨🇦
Bro your video its amazing, your energy and everything, i had to watch it in 1.5x you are a little of a slowtalker, keep it 100!
THis is the DIY I want to watch. Not someone using 3D Printer and machines worth Thousands of Dollars. All done in the Garage, nice!!
Hey, this was an excellent and entertaining vid. I’m just windowshopping for a 2nd hand watercraft now, and was curious about an electric conversion; you did all the footwork for me, lol! My only suggestion is that it’d be awesome to see you wearing proper eye protection when using the tools.
Glad I found this video, probably have to wait for better battery technology to make it worth it. Thanks for doing the leg work to determine the viability.
I thoroughly enjoyed this. I have great ideas but near zero electrical engineering knowledge & experience. I really like the idea of projects that drive innovation with off the shelf tech. Technological alchemy. 🤓🤔😎
That was a really awesome build video much gratitude for all the hard Labour & research
Excellent adventure in the process of the build and testing.