Electric SeaDoo Conversion!
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- Опубликовано: 5 июн 2024
- My electric SeaDoo gas to electric conversion project!
Electric jetski!
Is electric better than gas?
#ElectricConversion #watercraft #seadoo
Project Cost and product links spreadsheet: bit.ly/3CRORed
-- Finished Project Specs --
Max Speed: ~35 mph
Max RPM: ~6,000 rpm
Runtime: ~30 minutes
Weight added: +50 lbs
Battery Capacity: 100 ah
Battery Voltage: 128 volts
---------------------------
00:00 - Intro
00:56 - Why replace the engine?
02:02 - Research - Engine Informant
02:56 - Power comparison - Watt vs. Horsepower
03:32 - Finding a BIG electric motor
05:40 - Calculating max weight for battery pack
08:08 - What type of batteries?
09:09 - Battery Cell Details
11:20 - Battery Pack Calculations
13:43 - Battery Pack - Prototype
15:00 - Motor test#1
15:45 - Motor Mount
21:45 - Motor Test#2
22:43 - Design Batteries
24:20 - Spot Welder
26:01 - Build Batteries
27:25 - Battery Stress Test
27:45 - Finish Batteries
29:34 - Battery charger
30:15 - Lake Test#1
31:55 - Battery Expansion
32:38 - Final Lake Test
34:44 - Conclusions
Credit:
------------------------------
@EngineInformant
Engine Informant's channel: / engineinformant
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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 🤣
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%
Pretty sweet build! You should try a more aggressive impeller pitch since the electric motor isn't intended to run at the 6800 rpm max of the gas engine.
This is it. More pitch
I know a guy who owns a company that makes impellers for jetski's to provide more height in flyboarding. Maybe that's an idea.
For the purposes of this build, which is quick and dirty, the continuous max of the motor is 5,000 rpm and max rpm is 10,000 rpm. And the motor is designed for 120-164 volts.
IMO he really needs at least 144 or 156 volts and crank up the rpm to around 7,000 rpm to match the original ICE and the top speed of the ski to around a more pleasing 45 mph, and at optimal conditions, maybe around 50 mph. He’s not gonna be at WOT for long enough to be an issue to blow the motor. But he should run this at WOT for only short amounts of time given that caveat. This is really more of a proof of concept. But yeah, ideally you’d want to tune the impeller to lower the rpm so it doesn’t exceed the continuous rpm of the motor.
@@sfort42 as someone who owns two jet skis, I have to disagree that he'll definitely want to be running them at wot for long periods of time. When I'm on mine, the throttle is really just a light switch if I'm not in a no wake zone
@@mrsixtyfuckingnine It's a prototype, as he said himself. He can leave it like it is, which still exceeds continuous motor rpm by 1000 rpm and get subpar performance. I'm just suggesting as a prototype, he should be trying to get 45 mph out of it, which means he exceeds the continuous motor rpm even more. I totally agree with you that it would be ideal to change impeller pitch, but for a prototype that has already costed way in excess of thousands of dollars over his budget, nah.
It's irrelevant that you currently own a jet ski. My parents owned one and I've rented them numerous times. I know WOT is more fun, no one is disputing that.
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!
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.
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 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
Zach, you are a genuine hero. It was great fun to watch your fascinating journey of PWC conversion.
Hero? WTF are you smoking?
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
Great work! Had a fun time watching this. I was having bad thoughts when I imagined Lithium mixing with water, haha.
Being an electrician and 16 years experience in lithium batteries for model aeroplanes and helis together with their needs, I admire your work. You are a very clever fellow. The technical detail (put very well in plain English) is really well done. 10 points for your entertainment value too. I wish I could do a video like that. You have your BMS. Just to let everyone else to know it is critical for charging. Cheers.
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
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 see now why it took so long to get this video out. you did a ton of research! well done Zach! I'm impressed!
Congratulations...I am convinced that this is a thorough project wrap-up. I'm appreciative that someone proved to me I can't afford the time, money, added weight and lost performance for my jon project.👌👍
Pretty darned cool project there mister! Thanks for sticking with it, and sharing it.
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!
Long time no video! Glad to see you back man!!! Hope all is going well with you!!
Great EV Build, I really appreciate all the technical details and the lessons learnt on undervoltage.
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.
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 !
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.
Great project. Well done. Few more years of battery advancement and these kinds of conversions will be a no brainer.
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.
I have two jet RIBs and one Suzuki 15 Hp project for potential conversion to electric. Thank you for this video and detailed explanation of the process! 😊
byy 14 hp ektr7c
@@sharonbraselton4302 ??
buy ektr8c rib jeys
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.
Good on you for following through with the project
That was a really awesome build video much gratitude for all the hard Labour & research
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” 👍🏼
I bought that ski brand new in 95 and have been around pwc for over 30 years. NEVER did anyone think back then we'd ever see it run on an electric motor. Extremely impressed. I'm sure the engineers at BRP Sea-Doo would be entertained with your project. They're already working on an all electric model. Great job!
Already in the works called the E- GTI.. it’s coming by seadoo
buy it innsake kniw
The process is the reward! might not be the "newest, fastest,etc..." But rather, the knowledge, skills, fails, successes, and memories obtained during the entire project is the true reward! Its priceless and youll own them forever.
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.
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!
Outstanding! Sometimes the road traveled is more fun than the destination. Good job and looking forward to your next adventure.
I run 14s 20p on my electric mountain boards. This projects looks super cool. You really should be using Pelican cases for batteries.
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)
@@jt_fpv5555 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.
e propulsion conversion for boats will be a huge industry within the next decade. thanks for your early leadership and vision for this! ~tgb
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.
WOW! Amazing job there. You definitely took it to the next level buddy. And did a terrific job building this replacement. Really enjoyed your video mate, and thank you for sharing.
Be safe out on the water and god bless 👍
👍👍👍👍👍THUMBS UP👍👍👍👍👍
THIS is the answer! Way to go Zach. Never stop creating and inventing...
Thank you for sharing!
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?
Thanks for the guide!
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!!!!
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
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...
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 :)
Must have felt amazing to get up on plane. The only thing I'd pay more attention to is the battery insulation against vibration.
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.
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.
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
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.
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.
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.
This is actually amazing content to follow, Love this type of videos
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!
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
Amazing that you did this in your home garage! Love to see it!
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.
I think you'll have better performance with a suitable coupler. Maybe you could find a different impeller if the RPM isn't matched right.
Congratulations, I am an engineer and I admire your way of thinking and daring to go so far!!!
Awesome build. Can’t wait to see what you put that motor into next.
A crazy amount of work went into this😮 Good job bro
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
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.
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.
1000A around water = genius!
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.
If there is one thing that I must respect, is your persistency and drive!
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.
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.
Have you ever seen a “hydro mite”? Late 60’s personal watercraft. Perfect candidate for a electric conversion, I have one under a tarp, a tad pricy to convert but super cool to do. Love the vid, great job!
Kinda a cool experiment but this just goes to show the ease and simplicity and longevity of using gas over electricity for powered vehicles there is just no replacement for the gas engine
wtibg
You cracked me up when testing the spot welder when the other person mentions the sparks from it and you say "Silence" lol i was in stitches laughing my head off... Great work too 👍
Great video, with a lot of good technical details!! thanks and congratulations.
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
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 PROJECT EFFORT, AND YOU MANAGED TO FILM AND EDIT. GENIUS!!!
Thanks dude for an amazing video!!👍👍😁 Enjoyed all the seconds of it😁👍
Cool project; remember water and HV can be problematic. Thanks for enriching the interweb. Inspiration for alll.
Great project!! You're a crafty young man.
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.
Great work all around!
Grate Prodgect!!! Very important thing you explained people that electric power now still more expensive then combustion engines .
Amazing work! Congratulations!
This is beyond amazing.
Learning to mould fiberglass to make battery packs would be the next big step. Very Cool project 🏆🏆
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...
Excellent adventure in the process of the build and testing.
Excellent video! One that I really enjoyed watching and can relate to. Subscribed.
Awesome! Thoroughly enjoyed your project.
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.
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.
for batteries its always worth looking at old hybrid car packs, they're usually 48v per pack and can be picked up really cheap.
Awesome project. No doubt you learned a ton by completing it.
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
Great job, awesome project!!!!!
👏🏻 👏🏻 👏🏻 👏🏻
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!
I wonder if converting the seadoo to a hydrofoil would be possible. Greater efficiency on some watercraft. Great work!
And keep it at 82hp.
Great video. You are one smart young guy. Well done.
You're killin it bud; keep it up!