Building a 20000 Watts Electric Surfboard
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- Опубліковано 6 чер 2022
- Build video for my electric surfboard.
This project took around 6 months from designing to finished product.
STL download Box specifically for MSQ 70mm: drive.google.com/drive/folder... - Фільми й анімація
This is what im looking for so many low volt build videos
I have bought the exact same parts and run into the same issues. Water sealing is very difficult but I think you did a Great job. I still have not been able to get fast enough to stand on my board but I believe it is because I have a 5ft board and that is too short. Looking forward to testing it on a longer board but this is so good to see people building and problem solving. So many of us appreciate you sharing your build.
Yes water in the box is not a big concern, all those parts are waterproof anyway and its very little water that gets inside. Do you also have a motor that overheats after some time? This evening I want to try 12S instead of 18. Maybe it helps with the heat although I doubt it. Length of the surfboard shouldnt matter that much. half of mine is sticking out of the water while riding and practically doing nothing but maybe its length helps indeed to get up to speed quicker due to its bouyancy. mine is a 100L board or 110 I do not recall. As long as it has enough bouyancy it should work. Maybe try from shallow water so you can walk/ push yourself to speed already a little bit while giving throttle on the board.
For myself i wished to have it a little bit smaller like 7ft or 6.5 instead of 8.2ft
@@GalinskyFPV so far, I don’t have an overheating issue. I have a 500kv motor with a 10s system. Looking to upgrade to 12s but that will be more than enough power. At the moment when I am on the board, the jets are about 8 inches under water which reduces the efficiency by a lot. The force produced under the water and above the water are very different. I will give it a shot and post a video in a few weeks.
@@micahkoelmeyer1519 i see, yesterday i did an test on 12S when the batteries are full. The speed is ok. But when they are 3.8v per cell the fun is slowly going away because you go too slow. Also i noticed when i stand way more in front of the board the board becomes more efficient. Probably because the waterjets are nots as deep in the water anymore like you said. Boards flattens out more so also less drag i think.
You can install a water sensor on the bottom of the battery compartment and if water enters a water pump, the pump will work. This is the lastest guarantee, to get it. watertightness is important you should do it
Donatello would be proud of your invention.
Thanks for cool video,,Very good job 👏👍
Thank you very much! :)
Very good, thanks for the details!!!
You are welcome, thank you for your comment. I'm currently making a new surfboard, same electronics and impellers parts but I'm going to build my own board I felt there was a lot to be gained with a different shaped board.
Als je gaat liggen op de plank denk ik dat je nog harder kan ik ben zelf ook een elektrische sup aan het maken ik denk alleen dat een enkele motor met propellor efficiënter is als jet aandrijving wel gaaf
Nice project
Thank you! :)
Great video!:)
Thank you! :)
Naprawde dobra robota. Jestem przerazony!
Thanks mate! :-)
If you build a new version again, try moving the 2 jets a little bit more apart from each other.
This way they will not "steal" water from each other when running full speed!
Didn't know this was a thing or something to consider. I wanted to make them as far apart as possible but that would also mean less space on the sides from the surfboard removing strength.
I dont think i will make a new version, haha :P
@@GalinskyFPV We started with a soft surfboard like yours, but as we planned to make our own board we started experimenting with making the softboard shorted. Cutting from the back the board will get wider, and give your more space to play with. We also noticed that by making it shorter (not to short) the speed of the board did go up!
@@iamkian I can imagine! Great work by designing your own board!
@@GalinskyFPV Yes. My dad and I designed it.
It's made from XPS foam (Gamma troep), and it made a lot of mess when we were shaping the blank.
We made one big misstake when shaping it. The bottom is concaved to "trap" air underneath it, and make it plain more quickly. This works great however it is also causing cavitation problems due to air being sucked into the jets.
In jetboard V3 all will be fixed, and hopefully have a 80mm jet. 🤙🤙
@@iamkian Now that im also experimenting with where to stand on the board it indeed totally make sense to make it shorter but wider. I need to stand quite far on the front and it is more efficient that way (board straightens out more on the water). Having it wider instead of longer gives more bouyancy which is necessary. Having it wide enough so you can stand almost on the jets is perfect! So i can defenitely see that wider is better than longer.
In some parts of the lake (It is constantly happening in the same area of the lake in a certain direction it seems like) the board is loosing power in shocks and then comes back, might this be the problem that the jets are too close to one another? I never have this problem when i turn, sometimes suddenly it happens. But it always happens at a certain part of the lake.
Hey dude your having too much fun!😂
In my spare time For sure! :D
Nice man .Very cool, but can you please tell me how long the batteries provide for work and how much the total cost of the batteries. And why did you not keep the same type of batteries that you used in the beginning of the video
The batteries in beginning of video where not sufficient. At the end of an 2min run they were hot and the lipo's where puffy.
Total cost of batteries was €1200,- on that I could drive a good 12 minutes.
Very good idea!!!where you buy the motor and parts?thanks
Its all bought from alieexpress parts list is in video. I don't recommend the impellers though im looking for different ones.
Hello, I want to ask you an important question, I would appreciate it if you could answer it.. When using dual engines, did you use it as CW in 2 engines or did you use 1 CW and 1 CCW..
Hi, both rotate the same way. I dont know cw of ccw but i think knowing both rotating the same way answers you question. :)
I dont get any problems from it eiter, water + my body has enough resistence for those small impeller blades.
great video, well done! Why are you using 18S? The water jet manufacturer recommends 12 S for this motor, as the impeller speed is up to 10,000 rpm. When using 18S, does it work normally? no covitation? From the video, it seems that when moving, the nose of the board is pulled up a lot, and this creates strong water resistance.
Actually I was just thinking about it this night to go to 12S. The manufacturer of the motors are quite unclear on which voltage the 230kv can run. If i remember correctly it said 150volt. But nothing really specific
However i feel like the motore become very hot. Ive used it on 16S as well for very short period before i received the 288 cells. And I feel like the motors were less hot then. (I am not sure how if it might be true but its worth testing it on 12S) I will let you know the results.
Rpm wise i do not mind, rpm
Aah you meant the impeller speed! Hmm I should look into that, Today I will try out 12S anyway if the speed is satisfying I will keep it that way.
@@GalinskyFPV yes, I meant impeller speed. And if you take 230kv for 12s = 9000-11600 rpm impeller comes out. Yes, check out 12s. it will probably be enough for a longer riding time, although the battery will decrease. then write what happens.
@@mexail86 Just did 12S, didnt really do it for me it works okay in the beginning but when the battery halfway (below 3.8v per cell) it is too slow for a fun ride. I rather use 18S and cap the speed to like 80% or something. what i found out though is that when i stand more in the front the motors become less warm. I think the drag is just less since the board flattens out more over the water.
I would bet that if you moved your weight forward on the board, it would plane and go faster
I think you can reduce the water outlets. One of the biggest mistakes made is use a big engine, one is enough 500kv, my surf is much faster single engine
Wow that sounds great! What kind of impeller do you use and board? Similar board design or a shorter thicker one?
Nice man. That is some battery pack! What kind of speed you getting on it about 12 to 15 mph?
I have not measured that yet to be honest, I think indeed I go around that speed but quite some top end is left not daring to touch it, haha.
And indeed a big pack, I wanted to go lipo for the big power draw but those are expensive to get a little bit of capacity. Also sizing them into the box was a challange. With liion i could make my own sized packs. Even with al these cells they get a little warm.
@@GalinskyFPV small cells is the way to go. That's what Tesla and other electric vehicles run on 😎
Battery pack must be about 1/3rd the value. About 30 minutes of run time?
@@BariFPV More like 12 mins, haha, more batteries doesn't fit inside :P
@@GalinskyFPV that's some serious current draw. I thought with +200 cells you'd get a lot more.
It looks amazing, congratulations!!!
I am planning to do something similar with the same components, but just one motor and turbine. Do you think that this would be enough and would you recomend 12s or higher? Do you know how many amps one motor will use to see what battery I should get with what discharge rate?
Thank you!
Hi, if you go with similar board design I would definitely use two motors and 2 impellers. I rode this on 12S and it was OK not much speed but still quite fun. until the batteries got empty. (3.8/3.7v per cell) it would barely keep going in the water and was quite sluggish so i wouldnt recommend that. Maybe if you do lipo instead of liion it is okay. (li-ion tends to drop to lower voltage and can withstand lower voltage)
However that is with this type of board (long and rather small) I think there are quite a lot of gains if you use a shorter but wider board for better bouyancy. As you can see in the video half of my board it sticking out of the water, this is lost bouyancy and only make motor work harder to make the surfboard stay afloat. I also noticed if I stand completely at the front of the surfboard it becomes more efficient because the board evens out on the water and gets more bouyancy. (and less drag because the back of the surfboard is not so deep in the water anymore.) However getting up on the board at the front is impossible so while driving I need to "walk" forward.
From other videos I watched on youtube 1 motor might be enough but you really need have the perfect bouyancy solution. (thick and wide) and it needs to stay afloat when you stand on it without driving it. (mine sinks if I stand on it when it is not moving forward). The board is 90L I'm 75KG and I have 15KG of batteries on board + the 2 heavy motors esc and the other stuff. Adding weight goes quickly.
On average I use 11000 watts on 18S but there is still quite some headroom for max throttle. My estimation is around 20000watts but never measured the wattage while driving. It is based on my ride time and the amount of Wh that goes back in the batteries after een certain ride time.
But it defenitely is on average around 11000watts and max 20000watts give or take 20%.
so for a single motor setup i would look into 10000watts of usage if you plan on going 18S so around 150Amps. If you go 12S its less ofcourse.
If you go 18S and reduce the max RPM (so max throttle input of 80%) it will also significant reduce the amps.
@@GalinskyFPV Thank you very much!!
My project will use the same components as yours, but using only one jet as I mentioned and I will mount it to a small kayak that has a more or less flat bottom so it has little drag ( kayak: bic ouassou ). The engine I will use is the SSS 56123 230kv, with the same 70mm jet, do you think that with 18s it will be able to deliver 10000w at 150 amps more or less?
I really appreciate your help!!!
@@borjamartos1234 for fun rides, take either two at 70 or one at 85. but for an 85 impeller you need a motor of at least 80x100 - if it’s inexpensive and I don’t know if it will pull, but if there is a lot of money, then 85x135, tp100 or even 120x100, so with a margin.
@@GalinskyFPV how many minutes does the battery last if you drive at 80% power and 18s and how many at 100% for 12s? to understand how much electricity is consumed and how much power is consumed
Oof I havent measured it that well yet. It was not a noticeable difference since i tried both. By testing different battery setups and power reductions I was more concerned about my motor heating issue so i focused on that which is partly solved now by just running 100% power and standing at the front of the surfboard I do a little but throttle management. I can drive a good 15 minutes now. instead of 12.
(Insert either "Move Out (Scene 2)" from TMNT/TMHT III/II: The Manhattan Project, or "Sewer Surfin' (Stage 3)" from TMNT/TMHT II/IV: Turtles in Time/Re-Shelled, here).
Heel ruig! Vooral dat accu pakket.. mag ik vragen waar je de cellen hebt gekocht? Ik ben bezig met een efoil project maar ik zoek nu nog de juiste accu hier voor
Thanks man!
Ik heb alle cellen gekocht bij nkon. Ben ik erg tevreden over. Erg schappelijke prijzen en gewoon goede kwaliteit cellen. Geen rommel waarbij mah waardes niet kloppen e.d.
Met puntlasser kan je ze ook precies op maat maken, doe dit met enige zorg maar in principe is er niks spannends aan.
En wat vet een efoil! Ik ben benieuwd, laat weten (als je het niet vergeet) hoe het gegaan is of upload een korte video, zie ik hem vanzelf :-)
Motor 2000w - but how many V? ThankYou
My dream
How big was your battery (Ah). Also how long did that last you for. I’m looking for 40Ah for a 66.6v 23kw motor. Do you think I need a bigger battery? I will definitely not be running that at full speed maybe half.
Im also on 66.6v (18 cells in series with liion batteries and also 40Ah (16 liion cells in parallel. Battery size is not only what matters, thats only important for duration. what also matters is the discharge rate of the batteries make sure thats enough to match the 23kw or higher.
@@GalinskyFPV what's your cell sizes you're using ?and what motor voltage and kv you're using?
23kw motor, isn't it bigger for power consumption?
how many kilograms all together? can’t be carried away without a cart?)
I used to carry without a cart and it is doable on your own.
Surfboard is around 13Kg you can lift it easily but if you need to walk some distance it becomes quite difficult due to its size. Add then 15kg's of batteries in a backpack and it becomes quite unbearable. Cart was cheap and works well :)
Total weight = 28Kg
Mooi gemaakt. Draag wel een masker als je met epoxy werkt.
Dank je wel, Voor het dragen van een masker heb je inderdaad gelijk in!
What size is the props?
70mm
What lithium ion cells did you use?
Molicel INR18650-P26A 2600mAh - 35A however if i would do it again i think i would go LIPO to get the power and reduce weight but also drive time.
@@GalinskyFPV I’m running lipo personally but the nice thing about lithium ion is you can fully charge them and leave them fully charged without issues, lipos you need to leave at a storage charge level of 3.8 Volts per cell and check them every few months so you dont want to leave them fully charged for days even otherwise you will reduce their lifespan but yes the weight savings is nice. Not to mention I know lithium ion cells have crappy packing efficiency so its harder to fit more of them in a smaller container thats another advantage of lipo people dont think about. I’m telling you though if you want to switch to lipo, just get the turnigy 12,000 MAH 6S Graphene batteries, they weigh even less than regular batteries, nearly the same price, good price in general, and they stay nice and cool even under insane loads.
@@cameraman1234567890 i thought li ion also suffered from lower life span when leaving it fully charged and need to be stored on nominal voltage :m/ 3,7 ish.
I keep my li ion hobby is already expensive and just bought a house that need a lot of work..
@@GalinskyFPV I don’t think Lithium ion does, but lipo definitely does because cells begin to swell if left at full charge for an extended period of time
@@GalinskyFPV I cant blame you, jetboard are expensive but alot cheaper and more fun to build one yourself!
What is the engine brand? Thanks
The engine is: SSS 56123 KV230, the 500kv version also seems to work fine with lower voltage from what i've read/saw somewhere.
the impeller is the MSQ 70mm.
please open access to stl model in google drive. writes no access, contact the owner
You can access it now! :)
@@GalinskyFPV Thanks! otherwise my water cannons have not yet arrived and I don’t know what holes are needed
Please can i ask you. how much hour you can to do ?
Hi,
Do you mean how quick it goes? thats around 35kmpu.
@@GalinskyFPV I mean how long does the battery last
Thanks so much bro⭐⭐⭐⭐⭐
@@hamzabell6520 around 12 to 15 minutes. Not that long :-p
One factor missing from your calculation: the higher the power draw, the lower the capacity.
Assuming that you pull close to 10A from each cell, capacity will be reduced to 2Ah or less - check the datasheet of your specific cell.
That of course also means, that your power is significantly lower than what you calculated... Sorry, man 😅
youre right indeed, I haven't thought about that! But if power draw is lower isnt then the capacity a little bit highter again ;).
Then Again im happy with a lower average powerdraw. defending my position maybe the maximum powerdraw is still (close to) the 20000watts making the title still kind a correct. :P
Then again it could still be way off, only way to measure it is to actually measure it. But it should be in the ballpark.
I was using same engine on a 85 mm MSQ turbine and that burned the engine, so i need to find a bigger motor..
Ouch thats an expensive one im sorry mate! Was looking at a single setup as well with an msq 85mm but figured finding a motor would be difficult. Maybe a big outrunner motor would work for you instead of a inrunner? If im correct the 85mm doesnt have a mount either so you can kind a use any motor you want.
@@GalinskyFPV It has a mount and it actually fits a 80100 outrunner engine, which i think might be a good replacement?
@@TheUffeHammer Hi, im also looking into the 85mm version of the impeller. looking for a good (not too expensive) motor for that one is quite a challange indeed. I am not sure if 80100 would do much, it is not much bigger compared to 56123. Did you already have experience with the 80100 motor? I saw the MP100 is a good match but that one is already €500,- it is a 100*106 motor.
@@GalinskyFPV I have bought two of them since i'm running two turbines and the outrunner is almost as big as the turbine, it is a monster so i'm looking forward to testing them.
@@TheUffeHammer holy shit that will be a ton of power then! Will be curious how it will work out!
Berapa harga nya
Around €3000,-
Running 18S with your Motor setup will drop your efficiency on your motors, draw more current and generate more heat, but man you get so much more power, I'd run the 12S Setup, and the 2 batteries you'd already have out of your 6 could also be put in parallel and increase your runtime significantly.
Yes I thought the same based on other videos on youtube but my setup is really underpowered on 12S. I have to continously give full throttle to barely stay afloat. 18S it is nice and playfull, actually with my new setup (I rebuild the board) i did not try 12S, the new setup also seemed more efficient since the board is more bouyant.
@@GalinskyFPV Yeah, Buoyancy really does matter, it's like having an overloaded boat, it simply doesn't have the stability and power to get on plane. That's my concern with my Build, I weigh 208 Lbs and found a foam 6 footer for $100 on amazon that's rated for 200 lbs. Worried it may not be buoyant enough.
@@GalinskyFPV What board did you use? I’m going to be buying parts soon.
@@cameraman1234567890 I used an olaian foamboard 100 8.2 ft. It was 95 Liters if I remember correctionly. But like said still not enough bouayancy. I now made my own foamboard with epoxy which is around 150 to 180 liters.
@@GalinskyFPV Understandable, I found an 8 footer on amazon for my build im considering, but its 86 liters of volume, not sure if that's enough.
"Do you really have 20,000W? This power is equivalent to about 27.15HP, and a 125cc motorcycle only has around 10HP. Do you expect these two small electric motors to compare with such a large engine? Am I misunderstanding something?"😂
I never said it had 27.15HP. on average it draws around 10000~12000 watts measured by calculating how much went out of the batteries after charging it again and the time I surfed on it. I believe based on that full throttle is close to if not 20000watts since the RPM's are also limited. It is not capable staying on 20000watts since at 10000watts on average I already get heat issues with active water-cooling. Although in my current build that is solved.
Note also these are inrunner motors not outrunners. Inrunners are more inefficiënt compared to outrunners which get around 750w per HP.
Overall the surfboard build is not that efficient.
@@GalinskyFPV Thank you for your response, there are some aspects I don't fully understand, and I misunderstood you. I apologize.
@@jianwang4662So the actual motor power you’d get with 20,000 Watts would be 20,000/746 watts is 1 horsepower would be 26.80 Horsepower but then the inrunner motors arent that efficient so take 26.80 HP and multiply it by 82% efficiency roughly and you get about 21.98 Horsepower. Then you have jet pump inefficencies which are only about 10% losses on average so about 19ish horsepower is actually coming out of the pump
Molice
I think 20kw looks different. Not even close to 20kw.
Nah man its close to 20kW.
@@GalinskyFPV Maybe i am wrong, but the speed/thrust of your surfboard isnt even close to this much power.
@@GalinskyFPV But your project is great, anymway. Respect.