sebkitesurf2
10 µW
- Joined
- Aug 9, 2016
- Messages
- 6
It will be perfect toto, i send you an mp with drawind 3d of a fuse model
Electric Surf Board
- Thread starter Matthias_S
- Start date
dirkdiggler
10 kW
- Joined
- Oct 17, 2012
- Messages
- 641
The e-foilboard looks sweet. I was going to try out foiling this summer, but never got around to it. Too hard to time the wind around here to get out kiting. That got me searching again into what is available. My project got put on the back burner severely. It is tough trying to get this put together. Trying to figure out prop or jet sizing, mechanics of it all, waterproofing and doing fiberglass work. I don't have the skills for it. Anyhow I came across the Alibaba version. I emailed them and they said they are still having issues on their version, but they are close. Here is what I could dig up on it. They seem to have two versions. One with a 72v 7500w one motor setup and the other with a dual 3300w 48v motor jet drive. All the pics seem to be classic Chinese photoshop jobs.
Rip off photoshop of Onean boards!
[youtube]VSzE4O8n0yc[/youtube]
I am sure you get what you pay for, but they are selling for $3k which is what I personally would be willing to pay. Onean seems to still be the best value. I would love to ride the Chinese version and just mod it to where I'd be happy with it. I think the company that makes this made a bunch of hoverboards that caught fire - so maybe not ideal. Still tough to spend that money when you know the motor, controller and battery probably sell for around $600 retail and you are getting some plastic board with that.
Here's the link to the wallygadget site:
http://www.wallygadgets.com/index.php?m=content&c=index&a=show&catid=108&id=734
Rip off photoshop of Onean boards!
[youtube]VSzE4O8n0yc[/youtube]
I am sure you get what you pay for, but they are selling for $3k which is what I personally would be willing to pay. Onean seems to still be the best value. I would love to ride the Chinese version and just mod it to where I'd be happy with it. I think the company that makes this made a bunch of hoverboards that caught fire - so maybe not ideal. Still tough to spend that money when you know the motor, controller and battery probably sell for around $600 retail and you are getting some plastic board with that.
Here's the link to the wallygadget site:
http://www.wallygadgets.com/index.php?m=content&c=index&a=show&catid=108&id=734
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Hey everybody,
Over the past few years I have been working on a gesture controlled motorized surfboard, you can check it out here: teddydonnelleymaker.com sorry about no riding video, I only rode it one time before the waterproof bearing in the jet started letting in water.
Over the past few years I have been working on a gesture controlled motorized surfboard, you can check it out here: teddydonnelleymaker.com sorry about no riding video, I only rode it one time before the waterproof bearing in the jet started letting in water.
limpinator
1 µW
Hi!
Im also interested in this kind of project.
I think this is toto,
https://cults3d.com/en/various/water-jet-pump
Im also interested in this kind of project.
I think this is toto,
https://cults3d.com/en/various/water-jet-pump
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Here are some pictures of the board:
https://static.wixstatic.com/media/788a5d_22af841e1b974a0aba14739706e35f6b~mv2.jpg/v1/fill/w_630,h_473,al_c,q_80/788a5d_22af841e1b974a0aba14739706e35f6b~mv2.jpg
and a video of some testing:
https://www.youtube.com/watch?v=Uru1dOPyi3A
https://static.wixstatic.com/media/788a5d_22af841e1b974a0aba14739706e35f6b~mv2.jpg/v1/fill/w_630,h_473,al_c,q_80/788a5d_22af841e1b974a0aba14739706e35f6b~mv2.jpg
and a video of some testing:
https://www.youtube.com/watch?v=Uru1dOPyi3A
Nice project Teddy, looks as if you've made some really good progress. Do you think your board is capable of 20 mph (approx 30 kmh)?
*** EDIT *** I've just read on your website that you think it will achieve 24 mph, but is this without a rider? If so what speed do you think it will achieve with an average weight rider? Another question, which MHZ jets did you use? The unit price seems to escalate quite quickly as you go up in diameter!
*** EDIT *** I've just read on your website that you think it will achieve 24 mph, but is this without a rider? If so what speed do you think it will achieve with an average weight rider? Another question, which MHZ jets did you use? The unit price seems to escalate quite quickly as you go up in diameter!
Bazaki
10 kW
- Joined
- Dec 25, 2009
- Messages
- 639
Just saw the website from teddy. Very nice. How exactly did you made the board water tight ? I see at the pics just a black rubber hose that is even screwed flat at the ends. And this is waterproof? Don't you have water inside through the bearings of the jet ?
Very nice to see you came this far. Please upload more videos soon
Very nice to see you came this far. Please upload more videos soon
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Hi everyone,
To answer a few of the questions,
1) I achieved a general speed of 17-20 mph while riding the board with the standard hand remote. Basically I just compared it to the speed of the boat riding beside us. I was not able to actually ride the board with the gesture glove, because of the bearing seal failure.
2) The most difficult aspect of design the board was determining what jet(s) provide enough thrust, in conjunction with motors that don't use more battery than they need, and of course a big enough, cheep enough battery system. For my specifications a combination of two jet 52's with leopard motors and four 16 AH batteries did the trick.
3) I had pretty heavily abused the jets in my constant board repurposing so I think I damaged the seal somehow in that process. I would Highly recommend the jets.
lt me know if you have any more questions!
Teddy
To answer a few of the questions,
1) I achieved a general speed of 17-20 mph while riding the board with the standard hand remote. Basically I just compared it to the speed of the boat riding beside us. I was not able to actually ride the board with the gesture glove, because of the bearing seal failure.
2) The most difficult aspect of design the board was determining what jet(s) provide enough thrust, in conjunction with motors that don't use more battery than they need, and of course a big enough, cheep enough battery system. For my specifications a combination of two jet 52's with leopard motors and four 16 AH batteries did the trick.
3) I had pretty heavily abused the jets in my constant board repurposing so I think I damaged the seal somehow in that process. I would Highly recommend the jets.
lt me know if you have any more questions!
Teddy
Teddy,
Thanks for the reply, it's very helpful info. I'm going through the same decision with the MHZ jets and it is definitely an interesting subject. As you know, these are the jets:
Jet4 Power=1PS Thrust=140N Price=196EUR
Jet52 Power=4.4PS Thrust=240N Price=379EUR
Jet64 Power=12PS Thrust=400N Price=666EUR
Jet80 Power=16PS Thrust=500N Price=870EUR
The power vs. thrust calculations are interesting (https://en.wikipedia.org/wiki/Thrust) and I'm still trying to calculate some reliable empirical results for the surfboard application taking all factors into account. Your choice of 2 Jet52 units is interesting. Could you elaborate on what drove you to choose 2 of these drives as opposed to, say, a single Jet64 or Jet80 which produce a similar total thrust value in a single drive? Was there a sweet spot? Some of me likes the redundancy of 2 drives, but then again is it that important? A single jet drive would reduce the cost of having to buy a second motor and potentially a second ESC. Also it could potentially reduce battery load, leading to reduced battery costs or longer run time.
I am in no way saying that your choice of 2 units is worse, in fact I cannot do anything but heap praise on you for the progress you've made. I've not even started cutting open one of my boards yet!
Thanks for the reply, it's very helpful info. I'm going through the same decision with the MHZ jets and it is definitely an interesting subject. As you know, these are the jets:
Jet4 Power=1PS Thrust=140N Price=196EUR
Jet52 Power=4.4PS Thrust=240N Price=379EUR
Jet64 Power=12PS Thrust=400N Price=666EUR
Jet80 Power=16PS Thrust=500N Price=870EUR
The power vs. thrust calculations are interesting (https://en.wikipedia.org/wiki/Thrust) and I'm still trying to calculate some reliable empirical results for the surfboard application taking all factors into account. Your choice of 2 Jet52 units is interesting. Could you elaborate on what drove you to choose 2 of these drives as opposed to, say, a single Jet64 or Jet80 which produce a similar total thrust value in a single drive? Was there a sweet spot? Some of me likes the redundancy of 2 drives, but then again is it that important? A single jet drive would reduce the cost of having to buy a second motor and potentially a second ESC. Also it could potentially reduce battery load, leading to reduced battery costs or longer run time.
I am in no way saying that your choice of 2 units is worse, in fact I cannot do anything but heap praise on you for the progress you've made. I've not even started cutting open one of my boards yet!
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Torque,
I honestly thought that the jet 80 would be the best however, the price of a motor powerful enough to produce max thrust would be a lot but more than anything it seems to me like the battery consumption of those larger motors is practically exponential in relation to size. (I have no facts to back that up, just based off of some advertised numbers.
I didn't think that a single 64 would be big enough and I don't think that two of them would warrant the significant price increase.
Really all I did was look at the (exaggerated) thrust numbers and figured that with 2 jet 52's at 75% advertised thrust I could get around 80 lbs of thrust. It wasn't very scientific but basically the way that I decided that this would be enough thrust was considering that when I waterski the point at which I first get up to plane is the point which requires the most thrust and I didn't think it ever feels like I am LIFTING 80 pounds, and it takes much more force to get up to plane on a small waterski than on a larger board.
Honesty I thought that it seemed unrealistic for the jet 64 to produce that much more thrust than the 52, but maybe it would be a better option.
Hope this answered some of your questions
I honestly thought that the jet 80 would be the best however, the price of a motor powerful enough to produce max thrust would be a lot but more than anything it seems to me like the battery consumption of those larger motors is practically exponential in relation to size. (I have no facts to back that up, just based off of some advertised numbers.
I didn't think that a single 64 would be big enough and I don't think that two of them would warrant the significant price increase.
Really all I did was look at the (exaggerated) thrust numbers and figured that with 2 jet 52's at 75% advertised thrust I could get around 80 lbs of thrust. It wasn't very scientific but basically the way that I decided that this would be enough thrust was considering that when I waterski the point at which I first get up to plane is the point which requires the most thrust and I didn't think it ever feels like I am LIFTING 80 pounds, and it takes much more force to get up to plane on a small waterski than on a larger board.
Honesty I thought that it seemed unrealistic for the jet 64 to produce that much more thrust than the 52, but maybe it would be a better option.
Hope this answered some of your questions
It has answered my questions, thanks Teddy. I feel a bit more armed with information and I can see your logic behind using the 2 Jet52s. Having looked yesterday at suitable motors to drive the 64 or the 80, I too realised that they have to pump out some significant power to drive the jets sufficiently well, so the 2 smaller jets may be the better option.
Steve
Steve
Baja1969oct
1 µW
- Joined
- Oct 20, 2016
- Messages
- 1
this thread is awesome and after all the research i have been doing leads me to think i am on the right track
teddy. do you have any updated videos of real world application of your twin 52 design. i have been debating a single 52 or single 64... so i need to do some math then and start a drawing board
also can you update your motors.... leopard motors and four 16 AH batteries ... do you have a link to your motor choice.. and what voltage are your batteries? i am coming from the rc side of things ie. kv and # of cells... my plan was a 50100 t24 750kv motor 300a esc and a single jet ... just when i think i figure it out something changes my mind. i want to be of help to this hread too so i will take all constructive criticism
teddy. do you have any updated videos of real world application of your twin 52 design. i have been debating a single 52 or single 64... so i need to do some math then and start a drawing board
also can you update your motors.... leopard motors and four 16 AH batteries ... do you have a link to your motor choice.. and what voltage are your batteries? i am coming from the rc side of things ie. kv and # of cells... my plan was a 50100 t24 750kv motor 300a esc and a single jet ... just when i think i figure it out something changes my mind. i want to be of help to this hread too so i will take all constructive criticism
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Here are the motors and batteries
http://www.ebay.com/itm/LEOPARD-5692-1340KV-Motor-200A-Brushless-ESC-Water-Cooling-Fit-0-9M-to-1-5M-boat-/311718001901?hash=item4893d73ced:g:Hc0AAOSwpLNX~etT
http://www.hobbyking.com/hobbyking/store/__61510__Multistar_High_Capacity_6S_16000mAh_Multi_Rotor_Lipo_Pack.html
So I actually got the motors for very cheap because I knew a guy who was selling these same packages with the ESCs (which by the way are some of the lowest quality ESCs yet still somehow never burnt up, and did their job)
Obviously the batteries are maybe not the very best quality, but those prices with that much capacity and voltage was defiantly worth a shot, they too lasted very well.
http://www.ebay.com/itm/LEOPARD-5692-1340KV-Motor-200A-Brushless-ESC-Water-Cooling-Fit-0-9M-to-1-5M-boat-/311718001901?hash=item4893d73ced:g:Hc0AAOSwpLNX~etT
http://www.hobbyking.com/hobbyking/store/__61510__Multistar_High_Capacity_6S_16000mAh_Multi_Rotor_Lipo_Pack.html
So I actually got the motors for very cheap because I knew a guy who was selling these same packages with the ESCs (which by the way are some of the lowest quality ESCs yet still somehow never burnt up, and did their job)
Obviously the batteries are maybe not the very best quality, but those prices with that much capacity and voltage was defiantly worth a shot, they too lasted very well.
tdonnelley17
10 µW
- Joined
- May 12, 2016
- Messages
- 6
Also I'm in the process of updating the website with the riding videos, I need to make sure it is looking nice for college applications!
Hi, I'm new to this place and being just returned from a surftrip, I'm thinking on electric paddle support, not for a selfplaning watercraft.
The paddle support should make me able to paddle into the lineup and sometimes to support accelerating to get into the wave. To be able to start some calculations, I would need an idea of how many watts does a surfer need, to paddle his board and how if he paddles with all the powers which his muscles deliver. Anybody got an Idea about this?
I've read that an arm cannot deliver more power than 10W, i.e. 2 arms 20W, even if we multiply this figure with factor 5, we receive a poor 100w...
If I check the jet-units of mhz boats, the low cost jet 4 provides much more power, meaning it should be more than sufficient. (Today its actually offered for only 160€...) The advantage of the jet 4 is, that its rather small, together with the engine it a little over 1kg and it does not need a lot of battery weight too.
I'm shaping and building my own surfboards out of wood, so I could easily make it fit into a decent funboard with 60l volume. The idea as already mentioned is just paddling suport, because my paddle muscles are quite poor, being 53 years old..., the main function of the entire construction is still surfing waves, without any electric support. so weight is a major factor, especially battery weight....
Do you think the jet 4 is enough or even smaller the kmb 28 jet engine could work for my needs too? The thrust of the kmb is described as follows: 200 - 400 W / 13.000 - 16.000 rpm / 2,5 - 4 kp ... ??? Even 2 of those where lighter (and cheaper) than the Jet 4 and easier to install into a surfboard, due to the minor size...
The paddle support should make me able to paddle into the lineup and sometimes to support accelerating to get into the wave. To be able to start some calculations, I would need an idea of how many watts does a surfer need, to paddle his board and how if he paddles with all the powers which his muscles deliver. Anybody got an Idea about this?
I've read that an arm cannot deliver more power than 10W, i.e. 2 arms 20W, even if we multiply this figure with factor 5, we receive a poor 100w...
If I check the jet-units of mhz boats, the low cost jet 4 provides much more power, meaning it should be more than sufficient. (Today its actually offered for only 160€...) The advantage of the jet 4 is, that its rather small, together with the engine it a little over 1kg and it does not need a lot of battery weight too.
I'm shaping and building my own surfboards out of wood, so I could easily make it fit into a decent funboard with 60l volume. The idea as already mentioned is just paddling suport, because my paddle muscles are quite poor, being 53 years old..., the main function of the entire construction is still surfing waves, without any electric support. so weight is a major factor, especially battery weight....
Do you think the jet 4 is enough or even smaller the kmb 28 jet engine could work for my needs too? The thrust of the kmb is described as follows: 200 - 400 W / 13.000 - 16.000 rpm / 2,5 - 4 kp ... ??? Even 2 of those where lighter (and cheaper) than the Jet 4 and easier to install into a surfboard, due to the minor size...
I just read some post and got some inromation about the wavejet propulsion system. Does anybody know, what equipment they use? if I just measure a picture of a longboard with 59cm width on the wavejet site, the propulsion or jet tunnels are about 3cm only, which may relate to two 28mm jet units, maybe I should follow this route...
Jan Christian
100 W
- Joined
- Oct 26, 2013
- Messages
- 129
Did someone need a BIG motor for a jet? https://www.youtube.com/watch?v=9FWghP22xgY
Hi everyone
I am following this topic now for a long time and I also started my own DIY electric surfboard project back in 2015.
Now I think it's time to show you how far I got so far. Here is the vid:
https://www.youtube.com/watch?v=oUuA-0vBQ-A
If you are interested to read something about this project, please let me know.
I am following this topic now for a long time and I also started my own DIY electric surfboard project back in 2015.
Now I think it's time to show you how far I got so far. Here is the vid:
https://www.youtube.com/watch?v=oUuA-0vBQ-A
If you are interested to read something about this project, please let me know.
sebkitesurf2
10 µW
- Joined
- Aug 9, 2016
- Messages
- 6
Just perfect !!!!!!eFr3ak said:
Of course we want ALL information of this nice projet
engine , ESC , Batt, remote,and your best speed too ?
good job again !!!
Great work eFr3ak - this is a work of art. I would love to hear more about this.FROGMANGEEK
1 mW
- Joined
- May 30, 2016
- Messages
- 12
Great project, we need informations. wich propeller? Motor ?
Nice result, it works great !
It better than torqueedo prop system, I ve ever seen a project like yours :
https://youtu.be/-fsOfF-IHKw
Envoyé de mon D6503 en utilisant Tapatalk
Nice result, it works great !
It better than torqueedo prop system, I ve ever seen a project like yours :
https://youtu.be/-fsOfF-IHKw
Envoyé de mon D6503 en utilisant Tapatalk
