Ep50 Tech Tips: 10KW 48V Electric Motor Lessoned Learned and Tests
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- Опубліковано 25 сер 2024
- This is a summary video, of some important lessons learned during my gasoline to electric motor conversion for my 1975 Hughes 35/1500 North Star sailboat.
I learned a lot, there is something to be said of learning hands on. I have a very large appreciation for those people that paved the way here. I still have so much more to learn.
There are some test runs, and some data posted here in the video and my solo test runs and docking crib notes.
Music Credits
Hero's Ascent, Chris Haugen - / chris haugen - topic
Golden Motor Electric Motor Conversion Series
Part 1 Electric Motor Unboxing • Ep34 Golden Motor 10KW...
Part 2 Mount Alignment • Ep35 Electric Engine M...
Part 3 Batteries and Pulleys • Ep36 Batteries and Pul...
Part 4 Wiring and Test Fire • Ep37 Test Fire, 10KW 4...
Part 5 Motor Mount Variations • Ep48 Tech Tips: How ma...
Part 6 Lessons Learned and Live Tests • Ep50 Tech Tips: 10KW 4...
Sailing Vessel Northern Comfort
1975 Hughes/North Star 1500/35, sailboatdata.c...
Golden Motor BLDC 10KW Electric Motor, 48V, goldenmotor.bi...
400W Solar Power, ca.renogy.com
Victron Energy MPPT Controller, www.victronene...
Victron Energy 48/1200 Pheonix Inverter, www.victronene...
Victron Energy Battery Monitor BMV-712, www.victronene...
Aiming to be self sufficient, green, off-grid sailing
Still a way to go
Hi The Neds - Great to see that you are still going strong in your boating adventures:) Just wanted to let you know that your channel and advise set me on the track of building my own electric motor setup for the 36' sailboat I am building. If I remember it correctly (a while ago now) you expressed an interest in following the build if I ever posted it on UA-cam. I have now posted the first episode showing the motor housing design and should have it welded this coming week. Feel free to check it out. Thank you for all the advise so far and may have some more questions as I am progressing and hope you do not mind:) Thank You / Modular Hippo.
thx for the heads up! best of luck to you with your project. i’ll follow along
Thanks for that great info. It gave me that little kick I needed to order the 10 KW bldc for my Alcan 290 aluminium boat.
thx for the feedback and i hope you have good success. you likely have more room than I for batteries. my switch to lifopo4 is a huge improvement but i am really tight on space to grow the total amp hours to get the distance. i’d imagine you have some good real estate for panels! best to you!
Nice solo docking man! That can be the most scary part sometimes hahaha
thx i know when i have wind on my stern while docking my teeth are clenched as my prop walk is to port which pulls away from dock! appreciate the comments and hope you enjoyed the vid!
I am going down electric route in the next year of my kingfisher 30, mainly as my engine is a bit tired and by time i fitted a new engine or rebuilt it i could have a nice electric set up.. I am using a nissan leaf motor and will end up using the lipo batterys from a leaf as well..
the old atomic 4 recondition cost that was done in 2012 was about $7000 US. + the labour. going to electric got rid of all the oil stains, smells and gas fumes. Very happy about that. Good luck with your leaf conversion, that sounds cool! If you post some vids let me know. Best of luck!
I'm buying someone else's electric project. Nice to see the 10KW can push something this big
best of luck to you! my 10kw runs at 15% to push 12000 lbs at 3 knots.
Get a bell to ring it as you come in..lol
now there's a good thought :)
@Henry Cartier
Screw the Bell get a deck Canon to fire off when you arrived and drop anchor
Hey thanks for documenting this, very handy for me as I'm about to embark on a similar project on our 37ft boat. Out of interest do you know if the controller is capable of regen and what size reduction gear have you used?
I used a 1.91 reduction but I'm going to lower that to around 1.6-1.7 to drop the RPM a bit - the 10KW motor has a lot of torque. I am also going to put in a 3 blade prop to replace the thin 2 blade prop. My goal is to try to get to 4 knots hull speed at 25 amps draw or as close as possible.
I am not 100% certain on regen. I was told that it can while braking. I believe if it's spinning on it's own it will generate some power. I did not see a 'regen' setting in the software, but it's a motor, so if it's spinning on it's own it should generate electricity, but I'm not certain how to utilize anything yet.
What I did experience is that having the motor running slightly while that sails were up under a light wind I was able to keep a speed of 3 knots and the motor didn't take anywhere near the amps without the sails. The solar charging also exceeded or matched the motor amp draw, so I think there was some sort of regenerative qualities of the setup I have, but I need more data to figure out where this came from. I was running a while and didn't use any battery which was cool. Definitely some interesting options to figure out here.
@@TheNeds Thank you for the detailed response. I've been researching for 2 years and been toying between an "off the shelf " like electric yachts or building my own. You have made this build look so elegantly simple that I think you may have swayed it for me.
Yes, my understanding is that the regen is more about the controller than the motor. Though thinking about it I wonder what difference the reduction gear would make...
How much solar to you have? I'd like to be able to sail at around 2.5knts/3kts without drawing from the battery, If you reckon you can get 4knts with only 25amp draw, that would be bang on for the amount of solar I have calculated.
@@luckybeanzphoto right now I'm getting 3 to 3.2 knots (hull speed) at 25 amps so a touch slower than I'd like. If I have a good headwind I have to increase to about 35 amps and I am depleting my batteries too fast. I learned quite a bit doing this myself, and the support from the community and suppliers have been great. I have 400 watts solar but am increasing that to 800. The hardest part I think would be the actual motor physical mount and alignments. Unfortunately I had a faulty controller from the start which threw me down some dead-ends and time wasters... but I did have it hooked up correctly and once swapped out it's performed better than expectations. I have one additional add-on I'm going to put in this winter is a small DC generator for the longer than normal trip. I had an emergency blow off anchor with 58 knot winds and I depleted the batteries in about an an hours running at close to 100 amps at times. I plan on doing the ERIE canal next fall so I figure I'll be motoring quite a bit and a DC generator would be a good thing for long trips on motor. Best to you on your project!
Thanks for the video. We are about to pull the trigger on a conversion kit. Is there anything you would have done differently with your setup?
I hope some of my videos are useful.
the biggest thing I have learned about is batteries, the amp output rate is a key item. I knew that the lead acid would be wimpy but I didn't have enough data to tell me what did 25amps / 35amps / 45amps really do in a real life practical example with currents, headwind, without headwind etc.
The lithium cells I am looking at can do up to 200amps safely. My motor peak is 90 amps and I am way past prop cavitation (wasted effort). Aside from that I like sailing, I don't like motoring, and my motor is mainly to get in and out of slips/harbours etc. I am very glad to have the electric. If you are in a rush all the time, I'm not certain electric would be a good choice.
As a last comment I do plan on getting a generator set integrated into my charging so I can charge at 35amps. This will greatly help if we need it to act like a regular motor and go a long distance. If someone got hurt and we wanted to motor a solid 4 knots, 35 amps is enough and I could go as long as my generator can charge the batteries (hours).
Thanks for sharing your journey. Quick question, are you planning a video on how the cooling system works?
I have not hooked one up yet to it but I plan to this summer. I wasn't certain the benefits of glycol mix / coolant variants so I need to do some more research. Ideas welcome!
@@TheNeds Thanks again. FYI we also live in Hamilton and share the same docks 😁 We just bought a sailboat and plan on making some modifications. Your videos have really helped to put things in perspective.
small world! make sure to drop by and say hello if you see me there, hopefully we have some kind of season this year and get out of lockdown by then.
I already installed the 10kw motor in my sailboat, is four 12v batteries of 100ah enough? Or can i buy those 3.2v 50ah 16 of them?
I hope you enjoy the electric!
I believe that it fully depends on how you are going to use the boat. I also wouldn't consider anything but LiFoPo4 now that I have experienced both. For myself, I am not in a rush so I use the electric optimized for slower speed/longer distance. Right now I feel 100Amp Hours is not quite enough as I want to load up more electronics so I am going to double up the batteries to 200 Amp Hours. Keep in mind that I use the batteries for more than just my electric motor. It replaced my house bank I don't have a dedicated motor only battery bank.
If you install 50 Amp hours LiFoPO4 you get about 40 Amp Hours usable so when I cruise at 3.5/4 I pull 1700 watts (35 to 40 amps) so I'd get about an hour run time.
Another consideration is that if you have one bad battery, you will have less voltage so will your electric run on lessor voltage. My thoughts is that there should be a way to have a spare or to run at a lesser capacity while a battery gets replaced (as opposed to being shut off entirely).
From my experience I just want a larger safety margin and I am also including a generator hookup 'just in case'. You never know and I don't want to be squashing against any rocks. As I also use the batteries for my fridge, electronics and instruments so I need a little more overhead. Victron has a calculator that I used and to go longer cruising full time distances they rated my needs at 160 Amp hours. Good luck 😀and thanks for watching and commentating!
@@TheNeds Thank you i appreciate the long reply, the 4 batteries will exclusively be for the motor. Since i already have a separate electric system with two other batteries for instruments, electronics, pumps, fridge, lights etc... i saw those 12v 150 ah gel battery for $200. Lifepo4 are double price
if you go traditional battery you only get 1/2 usable. so 100 ah is really 50 ah. if you go lifopo4 then 100ah is really 80ah.
because of the faster charging rates on lithium when you deplete lithium it fully charges in a much shorter time frame. on my previous batteries when i drained them fully i had to wait 2.5 days on trickle charge but only 5 hours on lithium.
400 mins out of batteries. My 18hp inboard diesel makes 6 knots easy and runs at 3.8 litres diesel ph, for 6 days 24/7 off one tank. I can also work on it and replace parts and repair at sea. Hug the coast and make short trips from one anchoring to the next. Also, save the Coast Guard number on your mobile. VHF does not work off depleted batteries.
Good advice, appreciate the feedback. I'm not in a rush, and my 'normal' launch is 10 minutes on motor before the sails are up. Without charging exceeding consumption, diesel will win out for range for sure. I am glad to get rid of the smells and noise. If the electric motor cuts out at 44 volts, there is still a lot of power available for VHF but definitely saving CG numbers is sound advice ;0 backup backup
What’s the top speed and size of the boat
hull speed is just over 6 knots, 35 foot hughes. With the old atomic 4, I never got her much past 5, way too noisy. I havn't pushed the electric much past 4 knots yet.
What batteries do you have? Thanks
magnacharge 6 volt performancecarts.ca/product/magnacharge-gc-225-6v-battery-set/
Why is that your amperage is so low? 25a oh.. the default controller is capable for 300a.
i have the controller high amp limit set to 225 amps. i have run it at 100 amps during a storm but my issue is battery depletion: my batteries are not lithium so i have optimal battery life at 25amps draw. more than that i am starting to generate heat internal to the battery and they deplete much faster. im saving my pennies for lithium where i can pull more without concern.
I’d change the reduction, wheel and increase the battery bank and charging capacity. Really I would have got a newer more efficient diesel and more tankage
I thought about that a long time, but wanted to get the fuel off. Appreciate the feedback! What gear reduction would you have done? Already looking at increasing the charging capacity. I don't have a lot of room, but am doubling up to 800watts solar charging.
I so wanted to watch this video but I just can't listen to voice and music at the same time. I mean mostly only time besides boat videos that happens is drunk at a bar.
making videos is definitely not what I went to school for, but we're learning. Thanks for the tough love and reminder what it's like in a bar. It's been a while for me. Point noted!