E-Doo - The Electric Seadoo Boat Conversion Project Video 2 - Electric Motor and Battery Design
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- Опубликовано: 25 июл 2024
- This is the second video of the E-Doo Electric Seadoo Boat Conversion Project where I convert a 2002 Seadoo Utopia 185 with a broken motor into an electric battery powered boat. In this video I discuss the design process which includes selecting an electric motor, selecting the batteries and battery chemistry, selecting the battery management system (BMS), selecting a charging system to charge the batteries, deciding a DC-DC converter to power the 12V accessories, and finally outlining the cooling system and design of the engine bay. This video is really long because there is a lot to talk about. Stay tuned for the next videos depicting the battery build and finally the engine bay build as well as an initial testing video and some in depth range testing while wakeboarding, tubing, wake surfing, and just regulars driving.
Some Specifications:
Boat - 2002 Seadoo Utopia185 Jet Boat 8 Seater with Wakeboard / Wakesurf Tower
Trailer - 20 Foot Long Single Axle with Adjustable Bunks (not original Sea-Doo), welding on fold away tongue
Electric Motor - Netgain HyPer 9 Integrated System™ (IS) High Voltage (HV)
Batteries - Eight LG Chem 8s 28.8v 4.75kWh Lithium Ion Battery Modules from Chevy - Total 38kWh (just got 2 more [but not added yet] for a total of 47kWh)
Battery Management System - Dilithium Design With Extra Satellite (48s total)
Charger - TSM2500 and EVCC Charge Controller 144V with J1772 plug so we can use L2 electric charging stations
DC-DC Converter - TSM 144V (50a max @ 12v)
Cooling pump - Generic $50 pump from Thunderstruck Motors
Other Stuff - See future videos or ask
Places where I got parts from that I like (nobody is paying me for this!):
BatteryHookup - Batteries
Thunderstruck Motors - Charging, BMS, DC-DC, other misc parts
Green Motors Inc (in Phoenix AZ) - Netgain Hyper 9 Integrated System
#electricboat #electricboatconversion #edoo 
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Great info Eddie on the design material. Looking forward to seeing the other build videos.
You have no idea how much your video helped/inspired me. I plan on building a smaller Sugar Sand or Tango EV Jet Boat. Basically exactly what you’re doing but a smaller scale. Then when I get bored with the boat I’ll swap it all over to a UTV or 4x4 side by side. Thank you!
Enjoying the transformation, I have a 2001 185 still runs great, but converting it could be a very viable option. Look forward to more videos. Thank you very much,
exciting project can't wait to see it on the water.
Thanks for the parts list and great explanation of design decisions! I am thinking about converting a standup jetski to Electric and need about 100hp too.
Here is a standup I just did. ruclips.net/video/Lt0ocjGOkcQ/видео.html
Sick boat brah
Awesome project. I hope to do something similar but on a much small scale
Really Cool project! You're a pioneer in the EV frontier! great Video! it's funny I just went through most of the same buys from Thunderstruck Motors for an electric SeaDoo I'm working on too :D it was cool to see you the choices you made along the way
Thanks I wish you the best of luck and will definitely tune in!
Very cool man…. I need rhis
Made a mistake at about 10 minute mark. I said NMC stands for Nickel Manganese Cadmium which is wrong it is Nickel Manganese Cobalt!
Do you have the specs on the drive shaft coupler? Planning to change out engine on my Sea-Doo utopia, and just looking to source a coupler before I get too far into the project.
Nice! more info pls
Thank you for sharing this priceless experience! Been looking for such info for a while actually, Tesla owner here too :)) 17:30 I am wondering, is there a reason you couldnt just hook up DC-DC converter to your main battery and have it output 12VDC directly to your 12V devices?
Nice video and project. How much change to the weight distribution will this conversion make to this boat and do you think it will change the handling characteristics?
It is definitely more back heavy. I don't expect that to change much once it is on a plane but it does make it harder to get to a plane in the first place. To compensate I recently installed some trim tabs and will have to make a video of it with and without them engaged.
Any videos for engine mounting and linkage to impeller coming up? We're doing something similar on an old regal rush
Yeah definitely I should have a video out this week about some testing that will show it (and actually how I broke it oof). Basically I just welded some c channel into boxes that were 5" high just the right height to fit in a u joint with an adapter that fit the motor using a keyway and another adapter that fit the existing boat driveshaft (which subsequently I managed to destroy last weekend!).
Can u get an electric motor and add a car/marine alternator to charge ur batteries
Sir what is your opinion for golden motor 10kw ..
I am on way ordered one .. is it powerful and durable ?.
Any other powerful and durable motor you know under 10kw power
I looked at the 10kw Golden Motor for another project and I think they are nice and I like the option for liquid cooling. As far as power, most of these motors are very dependent on the voltage you can supply with the battery bank - you can check out the links Golden Motors has on the site for torque/kw curves vs. different battery voltages. It is hard to know if it will be adequate without knowing the application though. As for personal experience using one or on durability I can't really comment as I have not used one yet or started the previously mentioned project yet. Another good brand option I have heard of is Motenergy they make a variety of motors in that range (like the me1115 and others).
I have a 1950 Century 16' Resorter runabout. It does not have an engine and I am looking for information to make it an electrically powered boat. I need information about design and am really a complete novice as understanding all components and the details of the choices within the design process. I know that this is a lot to consider, but if I could get a start I would be grateful. The boat usually had about 95 hp. What would you recommend in an electric motor to replace that sort of engine required to power a 16' mahogany hull of the Century Resorter I am describing?
Hi Dennis, it sounds like a good candidate at only 96 horsepower (~72 kw) as that is well within the achievable lower cost zone of electric motors right now. Now the logistics of the batteries and the cost of that conversation may be less achievable as up front it will cost you more than the typical gas engine. However long term it may be worth it. I need to do a good video on the calculation as to the range vs. cost for my build in the future I think as that math is a little hard to get into in a single comment. You would definitely not need as big of a motor as I used nor as big of a battery pack. My cost was ~$12k for the conversion so maybe ~$8k (or less) for your build if you want to match the stock specs but it is hard to say exactly without doing the entire design in detail and it especially depends on the range you want.
@@ThatOneGuy7575 Thanks for your reply. Just how big and of what type a motor and battery pack might you recommend for my 1959 16' Century runabout (wood construction, weighing about 2000 pounds with 12 x 12 propeller)? Also wound you be willing to point me in the right direction to be begin looking for anything that would help me with design detail and some help in finding sources that will offer me the best deals to keep the project in the $8k (+or-) range?
Hey man, just watched all 4 of your videos about this, awesome stuff! I plan on getting a used jet boat in the next couple months or so, was wondering if you might be open to doing the conversion if we could come to an agreement?
Ever do a jetski?
I keep getting these electric sea Doo builds on my feed lately. Sadly a jet drive is a terrible start to any electric boat because they are super inefficient.
Have you considered solar charging it? I'm thinking about building my own electric boat as well and have toyed with this idea since I'm already outdoor and sunshine is plentiful.
Absolutely I have considered it! Since I generally am planning to take it out once per week I am thinking about 6kwh per day would give me a charge in a week. So probably 1kw of flexible panels on top of the Bimini. The hardest problems is the up conversation from the solar panel voltage to between 120v-160v which they don't really make charge controllers for. I have found some smaller converters that would do ~70 watts PWM but that is only maybe 1 panel per converter and also not an MPPT conversation which I don't like for efficiency sake. It would be nice to get 5kwh of extra power on the day it runs but need to figure out the logistics a bit more before I go all in I think.
@@ThatOneGuy7575 yea I’m thinking of getting the motor from a Zero Motorcycle which runs at about 100v. My idea is to split the pack into 2 so I can use a 48v MPPT charger.
I think a better solution for you at that voltage would be to get a 120VAC inverter and plug the charger in. An added benefit is you can have backup 120VAC house power anywhere if you park you boat outside.
@@s2kto2K Sounds like a solid plan. I could also charge my banks into 2 but the balancing between the 2 banks worries me if the solar panel for one side go shaded for too long or something. Definitely have considered doing a 12v mppt to my accessory battery and then doing a dc-dc conversion up to the full pack voltage when the 12v battery is above a certain state of charge and then shutting it down when it drops too low. Still the extra cycles on the accessory battery would worry me a bit so it would be nice if there was some variable amperage dc-dc converter.
Great job on the video and congrats on the boat progress!! Only one question.. you didn't add a 12V Dometic Cooler?? JK 😝🤣
Can't wait to see the boat on the water & keep the videos coming!
A 12v cooler sounds like a great idea actually. If electricity is $2-3 a charge those 20 pound bags of ice are going to be the biggest operating expense!
@@ThatOneGuy7575 my dad has had much success buying broken electric coolers and fixing the electronics rather easily. Maybe start watching Craigslist!
Is it possible to install a Tesla engine?
Yes I probably could have. The compartment space was pretty constrained vertically in the engine bay (25 or so inches of height) and the Tesla motors are long. Also the price is pretty high on Tesla motors even for used ones. So eventually I opted for the Netgain Hyper9.