Electric Sailboats: An HONEST Discussion - Sailing Uma [Step 140]
ฝัง
- เผยแพร่เมื่อ 10 ต.ค. 2018
- A full Discussion about Sailing with an Electric Motor!
Topics we cover:
0:09 The Boats
1:53 The Motor & Batteries
4:11 Why Electric?
6:50 Cooling / Heating
8:37 Electric VS Diesel
14:43 Charging Setup
18: 57 Regen (Charging while sailing)
21:53 When there's NO WIND
23:20 SAFETY (Heavy Weather)
31:45 Future Plans
[ FEATURING ]
Sailing Saoirse: / @beauandbrandy
Their Boat: 1971 Pearson 35
Their Motor: www.thunderstruck-ev.com/sevco...
Their Batteries: Chevy Volt Batteries
Their Anchor: Mantus 45lbs
Learning The Lines: / @learningthelines
Their Boat: 1978 Endeavour 32
Their Motor: electricyacht.com/product/elec...
Their Batteries: battlebornbatteries.com/?afmc...
Their Anchor: Mantus 35lbs
Sailing Uma
Our Boat: 1972 Pearson 36
Our Motor: Forklift motor
Our Batteries: battlebornbatteries.com/?afmc...
Our Anchor: Rocna 55lbs
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Electro-Beke Article: www.sailinguma.com/electro-beke/
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Being a former submariner (engineer), I always smile to myself when electric propulsion is "discovered" as a new technology and the future". Conventional submarines have been using electric motors for some time - 130 years to be precise - since the Peral submersible which was launched amidst great pomp and splendour in the year 1888 after over three years of active researching undertaken by Isaac Peral. Electric propulsion is great and reliable, as is diesel propulsion. As an off shore yachtsman and despite many years of electric motor experience my preferred propulsion of choice remains the humble diesel engine. Availability of parts, endurance only limited by amount of fuel carried, ability to refuel quickly and power to weight ratio are some of the key drivers for this. In terms of 'green house' impact, I simply don't use the engine for the most part and find I need to carefully gauge how much diesel to purchase to balance the 12 month stated diesel shelf life with reality (usually aim for 2 years). The exception is where we sail up to the equator and there is no wind. A week of motoring consumes a decade of usage otherwise. With currents and tides around SE Asia, it is simply not possible to rely on the elements to safely convey you to your next destination. I would have no hesitation to change to electric drive, but would need to take a leaf out of the conventional submarine arrangement where a power source to replace the expended energy is available (termed floating the load). Many bigger modern day sailing ships as well as cruise liners uses this arrangement i.e. flexibility and efficiency of electric but with a like for like power generation source. In terms of using lack of reliability as a 'reason' to change technology, this is a fallacy. If something is broken or not working on a vessel it should be fixed. We sailed in China 20 years ago and needed a part for our diesel engine (heat exchanger). The locals quickly came up with a makeshift alternate that we could have used, but one of the locals that spoke English asked why we simply didn't walk down the road 200 metres to the local Perkins Engine dealer and buy the original part off the shelf - which we did and saved a heap on duties and freight. Bottom line, turn off the engine, electric or diesel and go sailing!
Most subs used (correct me if I'm wrong) diesel generator to electric propulsion schemes. Wouldn't that be a viable solution for a sailboat?
Perfect solution and the technology that submarines have used for 130 years. The advantages are many, ability to distribute weight where suited rather than at stern. Ability to scale the generating powers to suit load - used in cruise ships when power demand is greatly reduced at nights or when alongside. Ability to have several generators rather than one big engine that might run at sub-optimal loads. This can readily be replicated in big yachts (say > 80ft). For regular sized yachts that require propulsion to be available for extended periods i.e. 24/7 the generator must be able to replace any energy used - hence the term floating the load. On submarines once the batteries were full we reduced generating power to equal what was being used to propel the vessel. For a yacht to achieve hull speed for extended periods, it would be necessary to have a generator around the same size as the regular diesel engine i.e. 50HP of electric motor will consume 50HP of generated power (less any inefficiencies). It may be possible to have a generator of lesser capacity if demand is say limited to 12 hours and other means of generating can be used to 'top up the batteries'. However we find all of our generated power (solar etc) gets consumed as house power, so little or none left over for this purpose.
As a submarine engineer also, I had some experience with Stirling engines and hydrogen fuel cells with Lithium storage. Now that is advanced technology and capable of replacing Diesel engines. At least until nuclear becomes a commodity technology :-O
Did you catch all the mistakes in his description about 1200 amp hour pack? How about the 350f Electric motor that's designed for 10k hours @350f?
So the point that I think all the previous comments miss is that UMA has been operating for 5+ years... yes 5+ years without significant issue, AND the motor they are using, the amps and batteries, their 480 solar, the fact that is overheats if they use it for hours upon hours (which THEY HAVE NEVER NEEDED OR WANTED TO DO), and their method of no needing to "float the load" all works for the style cruising they do. They need nothing else. They admit right in the video several times that this is not the solution for everyone, like maybe those who sail on the equator for days and days, or people who sail with some timeline agenda in SE Asia. Whatever folks, take what you can use and leave the rest. For me, my electrical setup will be solar and generator so I can "floating the load" if I need to, however like the SV's represented in this video, I have no time table and no agenda and I will use the SAILS, the weather and the tides and currents to get me where needed and the electric engine can get me in and out of port without oars. I may never need the geny, but It will be there if I want to use it. That is my style of sailing, and I am glad diesels are there for your style of sailing. It's simpler, less smelly and I do not need to check the oil levels daily. IT IS simply possible to rely on the elements to safely convey you to your next destination as has been done for many thousands of years.
I guess there are two types of sailors, those who sail and those who motor sail! I hear of loads of people who say cruising is 75% motoring. I myself have a yacht that had a petrol inboard, It was 40 years old and would let me down at the worst times. It taught me the importance of seamanship and knowing how to sail. I would regularly sail my boat on to its morning in a very tight harbour and i never hit anything. Love what you all do. I watch in awe of your skill sailing and D.I.Y. and wish I had the balls to do what you have all done. Best of luck to all of you! Oh and all through this video I kept thinking Joshua Slocum didn't have an engine!
Joshua Slocum sailed around the world without an engine. He also sailed NONSTOP around the world.
Campbell Gardner I
There are also those who sit slightly behind their girls putting their right arm around them and those who just sit normally.
...and put $15,000 in a substandard propulsion system? Must REALLY love the environment to want to save a few gallons of diesel that bad...
Woooo! It was a lot of fun to have this conversation with you guys. Looking forward to cruising this season and part 2 of the video 😎
Learning the Lines loved this video and hearing from you guys on this subject. ❤️
Thanks! We were happy to be part of this conversation. We have enjoyed talking with Dan, Kika, Beau, and Brandy about our systems. Loved that Kika and Dan thought up a way we could let people in on those conversations.
What a great discussion - I started this TH-cam adventure when I discovered your video series when you got Freebie and started your conversion. Your discussion about converting to electric and mentioning Sailing Uma lead me to their great series. Also brought up Beau and Brandy's wonderful adventure series (TH-cam algorithms are almost as predictable as the weather). All the best on your grand adventure!
THIS IS THE KIND OF VIDEO THAT REALLY SET YOU GUYS APART!! DEFINITELY YOU ARE NOT PART OF THE PACK, YOU LEAD IT!! KEEP UP THE GOOD WORK.
Nelson Pou I think you’re caps look button has failed?
Fixed, Thanks
Awesome, three of my favorite sailing couples together. I found the video very enlightening with the aspect of eliminating the need for fossil fuels. It’s seems as I have just watch the beginning of a new era, getting back to sailing not motoring. Kudos to all of you, I hope that more will join this endeavor as that is the only way to progressively go forward. Again thanks to all , Dan, Kiki, Jordan, Randi, Beau and Brandy.
another great one, you guys. Loved seeing you mix it up and share stories with other sailing couples. excellent info on the electric motors too!
Don’t know much about sailing. But I feel infinitely more informed by questions asked and answered from your experiences and willingness to share. Fun to watch y’all as well. Thanks
I absolutely loved seeing you all together, great discussion. I Can't wait for you all to meet up again and see part II.
Wow! Great video. Three of my favorite channels together with some great insight. Thank you for paving the way for the rest of us.
This was one of the best videos this year you guys just get better.
Oh i hope you lot are still sailing when i get away from it all. My boat was supposed to be in the water this year but I'm waiting till next April to get a few more jobs out of the way and new rigging 😊
Very cool to see all 3 of you getting along and helping everyone learn!
This was a fantastic video! I hope you do more using this type of format. The information was quite informative. Cheers!
This was awesome, I love how you are becoming friends with all my favorite channels. It’s so cool to see you all interact on each other’s channels.
I love that you’re all forging your way through the electric boat learning curve. You’re collecting valuable data and experience that could one day lead to this being the norm. Just as electric cars become more commonplace so shall boats :-) cheers!
This is fantastic. Looking forward to part 2. It's great to see people moving forward with electric propulsion in sailboats and I hope it works well for you.
Great discussion. thank you. My husband and I are at the beginning of our journey to the sea and as we watch your videos as well as many others, we are learning a lot. We look forward to meeting all of you once we get out there.
great video, the more You Tube channels I watch the more I appreciate how good the early explorers were. Can you imagine sailing up the east side of Vancouver Island, BC with no charts, no gps, and no engine. Thumbs up to them.
Yep, lots of sailors died back there in them "good old days".
Fantastic discussion! i am still learning to sail, but I've been taught that a motor is a convenience for getting in and out of a slip, not something to rely on for safety. Glad to hear all three of you (six of you?) confirm that!
Awesome video, everyone! Love these types of vids, and so happy you guys are following your dreams...
Thank. All of you for great onfo on electric drives with real experance. Well done all of you!1
Great episode guys! Really love the candor in open discussion.
Great discussion you guys! And lots of good information for those of us working on our own electric conversions. Thanks and keep up the awesome videos!
Great informative video. Answered a ton of my questions! Keep up the good work!
What an excellent idea for a vid you guys. I follow all 3 of your channels and I'm also excited to see the outcome of the electric motor specs and stats. KEEP ON, SAILIN ON. cheers RJ
Good gatherings! Thank you for sharing your experience!
I have been a millwright engineer for 46 years, and the worse fork lift truck was a electric one,forgetful on recharge battery failure, and lack of power after prolong use. Combustion engine so much better.....I also fish for trout in big lakes we used to use electric out boards (56 lbs thrust) they where so dangerous when windy.. all boats back to 4 stoke engines... I wish you well,and full charged !! All the best , :)
This was great! Nice having so many points of view and opinions! You have so much wisdom to share....Thank You!
Your practical approach is what I like.
Thank you so much for bringing the Pardeys into the conversation! Oh, and also for including my question in your video.
really useful information and experience, thank you all
Aye, m8's! Now, this one sets a standard! Thnx all of you for sharing this very valuable info! ❤️
Great vid guys! Loved the info and so nice to see some of my fav channels together! PEACE OUT! Ü
This discussion was really useful and a good listen! Thank you guys :)
"Just jack up the exposure and it looks fine." - Yup. So true. Great show guys. Thanks.
Educational with a fun element , thanks guys.
GReat discussion. Love the ideas and agree with most of them. I have seen so many sailors that fire up the diesel as soon as something out of the norm happens. If your a day sailor and have someplace to be I am sure it is more important to have a diesel but for a long term cruiser who's motor is "auxiliary" I think the electric makes good sense.
So happy to be a part of this chat with you guys! Lots of folks trying out electric and we hope we contributed some awesomeness on helping them. Ooooooo.... So many plans for the Part Deux of this electric-chat SOON!
Sailing Saoirse thanks for being part of this! Love to hear more about your solar system.
Spoondrifters thanks guys!! It was awesome being a part of this electric trio chat 😁 we have a couple vids about our solar.
Beau and Brandy!!! This is SO fun to finally see this video! We've been waiting FOREVER! Hahaha
We miss you both, and have enjoyed keeping in touch through your videos and on social media. We hope you and your boat, along with so many of our wonderful friends, are safe during the horrible weather on the east coast. Stay safe!🖤🖤🖤💜
Guys, you made a wise choice of the electric engine sie and the battery - but why aircooled??????
remember its carpenter not wood worker haha
I'm impressed you really stepped up your game having Jordan and Randi on. I watch all 3 channels and love them.
Thanks for the video and helping lead the way!
this one is best of all you've done, thanks
Great discussion, thanks for making it!
Great discussion. The best part of any sailing trip is the moment all the sails are set and trimmed and you can turn the hellish racket off. Aaaah. Silence just the noise of the water and wind.
Great show guys, so interesting to hear everyones experiences with electric propulsion.Something important to consider before putting a wind generator up your mast is the rise in COG. Its a lot of weight to have all the way up the top of your mast.
Great topic and wonderful discussion. So many of us are curious to know about this new capability. Also great to hear about the boating style that is compatible with electric. Not yet for me, I've frequently gone 72 hours under motor and glad I did, won't give up that capability.
Wow two of my favorite sailing and DIY channels together! I haven't been to Sailing Saoirse but will check out their channel.
I think all of you hit on the main requirement for safe sailing-competence. If you work hard and develop the skills to handle any tool with competence you will be safer than having a lot of things to fall back on to make you safe. Is this easy? Not really and it can be painful, but a good education and skill is never easy. They are however with you for life if you continually practice them.
Looking forward to the rest of the videos as I catch up and wishing all of you fair winds and smooth seas.
Thanks for a longer discussion about the electric propulsion system. I have the same Thunderstruck kit in my Pearson 30. The weak link is my 4, group 27, lead acid batteries, but it's enough to get me in and out of harbor, and it's sooooo much better than dealing with the old, Atomic-4, gas engine. I had not heard of Sailing Saoirse, so I'll have to check them out, but I have been watching Learning the Lines for a bit.
Hey guys, we could have been a great resource for this discussion since we did the ICW and just crossed the Atlantic ocean with our electric motor. If you ever do something like this again, we'd love to weigh in with our experiences. Love your content,
Maddie and Herby from Rigging Doctor
big jib they didn't go aground because of their electric motor.
👍great discussion! I got rid of my diesel engine over two years ago after it let me down in a very precarious place where I was stupidly expecting it to do its job without fail. More moving parts means more chance for failure... Usually at the most inopportune time. In my case it nearly put me against The Rock jetty in St Augustine. I removed the diesel engine and increased the amount of water I could carry tremendously. Considered putting in electric but before I managed to do it I got quite used to sailing everywhere without any auxiliary form of propulsion.
Good on you all for sailing first. That's why they put those big sticks and sheets on sailboats after all. 😉
I know Beau and Brandy and look forward to bumping into the rest of you probably somewhere in the Bahamas as I'm on that same time schedule LOL. Cruisers, go figure.
Jim is the BEST yall!
😀 We got a G23 Grampian. I am trying to setup for complete off grid. Your discussion was great.
I love the content that all of you are providing! I am new to sailing and because of my lack of experience i have depended so much on the diesel engine, and that dependability has gotten me in so many bad predicaments. Depending on the sails would have kept me out of these predicaments. i believe having an electric motor places my mindset on the limitations that would encourage me to become a better sailor! i am looking into the 10KW Brushless Sailboat Kit, but not sure it will work given i have a saildrive (i have a lancer 30). Once more great content!
Great, thank you. You´re like an open book !! Thank you.
This is such good stuff! When I first saw you guys install a electric motor I was skeptical about not bringing a generator, but since then I've learned more about sailing and actually started sailing a fairly small boat without an engine. We sail that boat everywhere, even in close quarters upwind. Quite often we have to tack into the harbor where the boat is kept and that's all fine really, if you just know how to sail. Obviously with a larger heavier boat you're not going to be tacking up a channel that's just 2-3 boat lengths wide, but I can't imagine a situation you can't fix with 1 hour or even 15 min of motoring and good seamanship that you could fix with a diesel engine. Keep up the good work.
Thanks Paul! We agree entirely.
Love your enthusiasm for electric, which I share. I love my Chevy Bolt. Still 3 words: canals, rivers and fjords. Not impossible, but painful. I’d have a genset even if you only use it every blue moon.
Ahh, So good! Last April we bought an Endeavour 33 with a defunct diesel, replaced it with the Thunderstruck 10kw kit, Firefly AGM batteries, and 600 watts of solar on the bimini frame. Plan to leave St. Pete for Hispaniola via the Bahamas shortly after the new year. Thanks for leading the way on this concept!
I loved the conversation guys good info on your insight for going electric.
One thought though on to comment about roller reefing mains and genoas. Roller mains have a terrible shape as soon as you start to reef them, same goes for genoas. Using slab reefing on a main helps keep the proper shape for the sail in order to still let you drive to windward. The roller reefing is easy and quick and doesn't require getting out of the cockpit, but you loose all pointing ability. Which is exactly what you need when your caught trying to sail off of a Lee shore, reef, or drive through waves in a Gale.
Awesome info!
Great conversation guys! I really enjoyed it. The Pearson 35 is one of the boats I have in mind for when I start cruising. Along with the Alberg 35, Bristol 35.5, and a Luders 33. Those are my top choices, but that doesn't mean I won't consider other options. I do want to go electric rather than diesel and rely on sailing skills, not steering skills to move my boat! Thanks for the conversation, and I may have questions later.
I got a 25ft sailboat win a working diesel for 2k. Y’all did amazing.
Awesome vlog👍🏼
So nice to hear someone actually talk sense when comparing diesel and electric options. Almost all of the people who push the electric option discuss it like it is apples to apples. They both have advantages and disadvantages.
Great video👍👍
very nice discussions thank for the info
Just a thought, if your motor generates that kind of heat when running couldn't you figure a way to wrap it in a copper coil and run coolant through it to heat a water heater tank for hot water?
We have a 22 foot trailer sailer which is pretty light and slippery in the water. I removed the 2 stroke 6hp mercury outboard and replaced it with a 200ah 12v Lifepo4 battery and a 54lb thrust electric trolling motor. It pushes us along for hours at 3 knots in complete silence. Awesome! Cheap setup for a little boat and works perfectly.
Thank You for this informative video, ...we enjoyed the discussion with your friends. Safe travels to you all.
Awesome video!
Great Discussion! The comments about sailing rather than motoring because of the electric battery storage are important. Make sure you have good light air sailing systems. I find an asymmetrical spinnaker an absolute necessity. I'm into a decade with my Ericson 27 and EP auxiliary and wouldn't have it any other way!
Magnifiques échanges d'opinions et suggestions... OUI la voile est différente d'un bateau moteur.. et il faut tout planifier avant de lever l'ancre...
'not apples to apples'...well said and well covered ....thank you :)
Great discussion! The points I took away is 1. What kind of sailor do want to be? 2. What kind of sail boat life do you want? Weekender/live aboard while bobbing or ADVENTURE! 3. Plan, Plan, Plan - then be flexible (See 1.)
Great stuff, from all you folks :-)
I'm not a sailor so as an outsider I think my opinion is unbiased. I read here lots of folks bashing electric and some bashing diesel, I think when it comes to sailing, for safety, diesel is the way if you're considering long voyages, too many unknowns out there that at this point electric cannot handle. As far as some going all electric, I think is risky but great at the same time as an experiment to see how far a person can take this technology and possibly lead the way to better electric solution for sailing.
I think what Sailing Uma is doing is great and being a TH-cam presence documenting this will give us great insight to all electric sailing.
Look forward to seeing more, thanks for sharing.
that was awesome
to have three boats worth of info
and look how happy you all were
heres to hearing more from you all
{:-) PAV
Info from two of the boats that have never been in the water is fairly useless. They're just parroting what the salesman told them.
One more comment: I used to have a 27-foot Ericson, I know it is a smaller boat that what you have. And it was not blue water ready... anyway, its motor had issues, the tank was rusted, etc. After I tried to find someone that would fix it, and how difficult it would actually be to make it continuously operational, we installed the dinghy motor at the transom and it basically worked well to dock and leave the dock area. That is: if you will keep your dinghy motor, you can always use find a way to use the dinghy motor or the dinghy itself to tow the boat, in case your electric motor does not have enough battery at some point. That is, it might make it good to think of a good dinghy motor as a back up to your electric motor. But major kudos to you if you don't think that is necessary.
Wow...your best show yet...very motivating and instructional...maybe a bit more B-roll of the other boats would have been nice also.
When you come up the East coast towards your Atlantic crossing...add in you trip to visit Quebec we have marvellous sailing in the Baie des chaleurs, Bonaventure and Gaspé and also the St-Lawrence and the Saguenay river which is like the fjords in Scandinavia. Our weather is cold, but hearts very warm and....there are no hurricanes!
Thanks again for the excellent video and cheers to your sailing friends
Godspeed
As a millwright in machine repair 35yrs you are totally wrong the windings my be good for 300 degrees plus but your motor bearings will be short lived over 150 degrees. I have changed out many forklift and ac motor bearings from motor drying out grease and frying the bearings.Bearings at 300 degrees will only last hours and slip on the shaft wrecking the stator
Agree with Chis Evans , most forklift motors dont have a 100 % duty cycle , plus the temp you are measuring is not the internal winding temp.
but that of the outside casing temp. The insulation will degrade over time. You will need to cool the motor.
Have you ever installed an edy current shield on a motor? What do you think of them?
A company I worked for installed a new frequency drive compressor(undersized) it ran close to 90% during production , the bearings were running at 216 F they let go after 3 months ,were replaced and let go again.These were heavy duty spherical roller bearings , that forklift motor is ball beaing that should run at 110 to 130 F
chris evans agree they will find out when they need it most it will seize I believe there best bet is have a electric motor built by 3M in DesMoines iowa they can build anything to specs that are more furious than they can find on the open market
Dan go with a brushless AC induction motor like this one. I have the 3kw on a 26'. The 10kw would be perfect for you. no fan, nothing to cool. kellycontroller.com/ac-induction-motor-with-encoder-c-21_96.html
Excellent...Thank you!
Awesome!! Thanks guys... we have the Electric Yacht 30 with the back to back motors. Can’t wait to get in the water and start collecting data. We’re in the market for solar panels... can you share more details about that system?
Hey guys, awesome video, I really like the videos I can learn from, as hopefully one day I'll get back into sailing again.
I'm graduating college this semester in Computer Science, and am probably on my way to Seattle after that to get a job with the big tech companies.
Maybe I'll be able to save up enough that I can buy myself a cruiser and sail past you guys one day.
Probably not... But hey,
Yo no sé mañana!
GREAT conversation and format. Hopefully the naysayers watch this and accept what you three (6 ?) are trying to accomplish. The only issue I have is that a lot of the 'pop ups' flew by too fast to read, but that was solved by going back. Stay safe :-)
Loved it
First, thanks for the discussion: It was neat to see how everyone is doing electric!
Second: I think the main point that would push me in the direction of a diesel is that it's another option. Good planning can take out 98% of the risk, but there's still that small chance that the prediction will be wrong, and you're about to get stuck halfway across the ocean with no wind at all.
I'd also consider a generator and a moderately sized fuel tank, though: again, it adds another option. You'll need to do some maintenance, but they're (probably) easier to take care of than a diesel engine, and leave you running on solar as often as possible.
Ty for sharing!!
I just realized that I've never made it a point to figure out what boat you two have. I'm in the market and about to buy one within the next year. Thank you all for sharing your experiences with electric sailboats. I would love to have one but in my area, having a diesel motor is pretty much mandatory with the currents throughout Puget Sound. I think you could just have a nice quiet little Honda Generator for backup power if you needed to motor for a longer time or needed to charge the batteries in bad weather situations. I'm seriously considering selling the engine that is going to come in the boat I'm going to buy and going electric.
DAN AND kika, I sail a race 45' catamaran that I designed and built and it had no motor. It was very challenge to maneuver but it made me able to put a monohull anywhere sailing. Actual sailing is easier then motor to me.
Awesome!! Great info for a super noob sailor like me! All channels subd! Good winds to yall!
What a timely conversation. I just found Sailing Saoirse and Learning the Lines this last weekend as I was looking for more info on electric motors (been a fan of Sailing Uma for quite a while). Now I'm looking into Volt batteries! Question for all of you - how did you figure out how much motor you need? I have a heavy Westsail 32, and I can't figure what motor to use to push all the weight.
Michael Seymour we went with Electric Yacht and they helped us answer this question.
Something like 1kW per Ton gets you close. Depends on how fast and how far you want to motor. What size diesel do those usually come with? What ever it was, divide HP by 3 then multiply by .75 = Kw of an electric motor that will also get you close. Those are very general rules of thumb, and motor companies often spec a larger motor for redundancy and get you to use a motor at 50% of it's rating. Could chat about this for hours, shoot us an email if you have more questions.
Same here. We talked with Scott at Electric Yacht Motors and gave him all of our vessel's information and he guided us as to which motor was most compatible.
Divide by 3 and multiply by 0.75 is actually divide by 4 ;)
@@LearningtheLines Thanks for the reply! Looks like I need to talk to Scott
great info guys. im planning a 52' alloy cat build in 3 years. really considering elec as it just makes sense in lots of respects, especially on a cat as it reduces weight and solar area is larger. things will be easier and cheaper by then to. one question. with a 15T cat im wondering how to design the setup elec or hybrid to be able to motor for say 1-2 days non stop if i have to? do they make elec motors big enough to replace 2 x 60hp deisles?
Fine for getting in and out of ports during coastal sailing. But forget about it for safe oceanic passages, as well as heavy wind situations when a shore is coming nearer during a storm.
th-cam.com/video/kUTEYa1yvfg/w-d-xo.html Have a gander at that.
Enjoyed that! cheers ;-)
Interesting discussion, think it covered a lot ground on using electric propulsion. Was a little surprised nothing was said about hybred sustems as part of the decision process. Hope this topic is revisited after each boat has a year or more experience cruising with their electric setup.
We've been at it for 2 yrs without needing to go hybrid. BUT, we've been in the Caribbean with lots of sunlight and easy sailing/anchoring. We'll see what happens when we sail into tougher seas this summer.
I love the Subscribe cushion!
This is an awesome discussion and I agree with just about everything you are saying except maybe to add a point both people in a cruising couple should be able to run the boat solo 100 % regardless of whether it is a sail boat or a power boat or if it does or does not even have an engine. a minor point but it was such an awesome video even though I am seeing it a year later I had to say something .
Keep in mind a hybrid can be fully renewable. Engines can be configured for E95 and ethanol makes a serviceable cooking fuel, though the induction stove is totally serviceable. An ethanol oven and grill would be a good optional companion. Project Atticus has a wind generator up the mizzen mast. You should be able to recharge from the prop to some degree with a variable pitch prop.
... Great step ... fantastic to see the three couples together, the three electric couples .... you sure covered a lot of ground ... you mentioned not wanting to deal with propane, did I Miss it, did you mention your solutions to replacing stoves and oven .. UMA has the long cylindrical solar oven, what else ..... stressing the need for Heavy Weather Sailing solutions ... so important, as is ... single handling capabilities of both partners, so crucial .... Big thumbs up ..... have fun be safe, save our oceans ......
We have the larger GoSun now. (Will be doing a video soon) We can also run an induction cooktop and microwave if we wanted. But for now we don't cook much over conventional heat and when we do, our little alcohol stove works perfectly well.
..... had forgotten you have an alcohol stove .... induction cooktops I hear are great, no radiant heat, if that is the right term .... curious to see the new GoSun Step .... have fun besafe, save our oceans .....
Also, was it possible that the efficiency gains from removing the gearbox was "gear ratio" related?
Really great video. But there are a few issues that can be resolved. The right generator (cummings-onan) can give you 11,000 watts at .37 gallons of diesel power per hour. A diesel electric boat can go over 2,000 miles. A great plan can work and my wife and I will prove it works when we retire in 5 1/2 years. Your videos have helped us more than you can imagine. Thank you thank you thank you!
Have you guys ever considered mounting heat sinks to your motor? (I'm thinking like the heat sink fins on CPUs in a PC)
I'm curious as to how much that could help control the heat.
awesome you guys are awesome
I think I should've paid better attention during 1st year physics in uni, no wonder i ditched it in second year 🙈😀 This is really interesting even though I have neither motor or boat. There's obs people passionate both sides of this motor debate but you are so right, you just need to use what suits your needs 🌼🌸🌼