You want to create your own homemade Jetsurf ? Then this tutorial is for you! With my friend Isak Mølster, we will show you step by step how to make your own Jetsurf !
I just started building my jetboard. Unlike other videos i'll probably have a functioning one. The concept behind your hull was very innovative and deserves more acknowledgement than what you have.
TheyCallMeKai thank you! Sometimes I get bad comments, which is very annoying because this video is made for people like mac gyver, who like manual work, I’m not an expert and just try to inspire people who would like to build something like that :) thanks for your support!
Excellent work. Clearly your professor see this. Class projects are challenging but rewarding. Again, well done! (quick question, in the final test, I see bubbles in the jet discharge. Could this be cavitation?)
adam lee thanks! As a professor, I enjoyed supervising this thesis! Very sad that the university doesn't extend my contract... for the final test, it's a good question. In theory, I would say no because our engine is limited to 7000rpm about, which is also at this rpm that the cavitation appears, but when I was on it, I was full power and it didn't have enough torque, so the engine was at a low rpm...
thanks!!! but adding a gearbox means more weight, need more space, more friction, more precision etc... it was the alternative, but due to lack of time, it was not possible to add it :(
Awesome job! To bad on the weak engine though... Did you calculate on the back pressure? A 2stroke engine need the right backpressure to function properly and by rebuilding the exhaust and especially mounting the one way valve you added further pressure to the whole system that might comprohend the full power outcome of the engine. Try using a weedwhacker engine with more horsepowers, they come in a vary even up to as much as 5hp and more! And welding a cylinder outside the cylinder of the engine and making a labyrinth of the old aircooling vanes on it and put in a inlet in the bottom and an outlet at the top with hose fittings so you could use some the pressure from the hamilton designed water jet to cool the engine itself. Hope som of this might help you :)! I'll keep on watching, thats for sure!
PezDJ thanks for compliment! i would like to change the engine and get a more powerful one... your idea is nice but I still didn't find these 5hp... need to investigate more :) your idea about the cooling system is also nice but might be complex to build :) We didn't have the time to calculate the back pressure :(
Well we got the 5hp ones here in Sweden, though its not a weedwhacker then its more used to remove small brusches and such. Might be called brushcutter :) and they need more power to be able to cut through small stems etc aswell :). If you got a angle grinder, a strong nipper or some sort of power cutter plier and some material with the right dimensions and welding skills it might take maybe an hour or two to bild the cooling system at the most :). Ah well thats to bad, hope you will get a good engine in the future then :). Thats the worst with 2stroke, thats why they got the "bladder" on the exhaust system to make give the right back pressure creating rebound pressure waves. Keep on building :D, I'll gladely help with info if you need some :) been planning to build myself one sometime but i dont have the time at the moment haha got so many things going on at the moment :P though I'm into building a electric one even though I got an engine laying around :P.
dude ... very good your work I'm starting my project and yours was sensational, but I think only lacked power, I'm from Brazil and a people here did with motor bike 135cc 2 stroke was very fast ... I'm in doubt How many mm do the propeller and turbine?
yo! I agree with you, we had a lack of power, we knew it will be the problem but we had no other motor :( For the impeller, we chose 72mm diameter. This choice was made because I measured roughly on a real jetsurf (with my hand so not precise) so if I remember, it was something like 70 or 75mm. If you take too small, you will not have any propulsion, if you take too big, you need more torque because of more resistance :) good luck with your project and don't hesitate to send me videos of your invention! :)
@@yaelpericard thank you very much and congratulations for sharing this information with everyone ... I made a squeal that I can have a good time .. a big hug here from Brazil . ua-cam.com/video/3El2AOcT3DQ/v-deo.html
Can I ask you something. My jetsurf engine is hard to explode, there is no garenti, release the gas and turn off the engine. Now adjust the gas and wind to make the engine easier. Thanks.
greattt very good job .. but you need more power engine in this place you can tryed to put board engine like yanaha 10 or 15 hp or rc engine that have much power .. continium working . you made a very very good work
greattt very good job .. but you need more power engine in this place you can tryed to put board engine like yanaha 10 or 15 hp or rc engine that have much power .. continium working. you made a very good work Friend which rc engine I could use in this project, because I'm building one here in Brazil
Petite question, en sortie de moteur, avez vous branché directement votre helice ou etes vous passé par un reducteur pour multiplier le couple ? Peut etre que ca raisoudrait le probleme de puissance..
Bonjour Enzo! En effet, l'idée c'était d'avoir un réducteur, mais nous avons eu 2 problèmes: Le premier c'est qu'avec les moyens que nous avions, il était difficile de faire ce système, d'autant plus que le moteur aurait été décalé par rapport à l'axe (ou alors faire un système comme un joint de cardan mais ça complique encore les choses...). Le 2ème problème c'était les vibrations, rien qu'avec le joint qui lie l'axe du moteur avec celui de l'hélice, c'était un amortisseur, ça vrillait un peu... donc on a pas pu développer ce réducteur :( mais l'idée y était!
Great video I’m actually trying to figure out building one myself as the price on a manufactured one is insane! Would you share your files so I could follow your build ? If not I completely understand
It might be limit... the new jetsurf use engines of 11kw I think, so you might have a problem with the torque when you will start... but if you never try, you never know!
@@shaanamir4631 Hi Shaan Amir I´m building a motorizaed surfboard and I´m planing to use exactly the same engine. You already built yours? How did it worked the engine? Regards!
thanks for the quick reply. congratulations on your work, super cool.i think you will need a liquid cooled motor and i know they are available in small displacement 4 and 2 stroke. aircooled will generate too much heat in the engine compartment and since you cant ventilate too much due to water spray being potentially ingested by the intake, it will get dangerously hot and become a fire hazard. i dont know if you are also aware of a backfire and the danger of an explosion caused by it. you should add a flame arrestor on the carb and a safety blow off port for the engine compartment. the engine lid could become a projectile and injure you. its scary. it happened to me in a jetski.
Jose Martinez thanks for advice! As soon as I come back to norway, I will work on it during my free time :) I will give some news through the channel !
@@yaelpericard search for the Chanel jet surf caseiro and Daniel Uchôa cause these Brazilian dudes are making some Magic around here with homemade jetboards, I Hope It helps with your cooling system and your Power problem
Actually 1.6 hp ( 5000 watt or 7 hp minimum) engine is not enough for the jetsurf speed but ıt could normally make at least 10 km/h . 55 lbs trolling motor can go as well 7 km/h. I think the problem is the volume of board and position of engine and also propeller. Board must be 180 lt or more. If you are 90 kg. May be i am wrong but ıt look great and deserve to go better👍
Vilius Samuolis hey! I think it would be possible, but you add more parts and you also don’t have that much space... it might be tricky to control it. I had the idea at the beginning to use 2 engines in order to have more torque, but when I started thinking about the connections of the shafts, then it was a problem, cause you need to add gears, the motors need to rotate at the same speed etc. It’s easy to make something complex, but it will cost more and it will also be hard to control everything. Be aware that there are a lot of vibrations, so the more you add news parts, the more you will have interractions and you can have some gaps or frictions...
Thanks for a reply, and yeah, I see... I'm thinking of making a jet surfboard through summer, or if needed spend even more time. At the moment I'm just gathering information and I couldn't found any small, powerful engines (at least 12 hp) that wouldn't have cosmic price. As I see it's been around a year since you tried to make a surfboard and wondering, did you overcame the engine problem with any idea? Maybe you have some recommendations about what engine to use?
Vilius Samuolis yes it’s about 1 year, but I made a world trip for couple of months, then I got a knee surgery and now I just started a new job, and new flat as well, so I don’t have time for this summer (I will go for holiday as well) but I will probably work on it during the winter and hope to test it in May 2019 ;) I plan to change it for an electric engine, it can solve a lot of problems! I will make tutorial for that as well, so you should subscribe to my channel and you will be in touch of what I will do! ;)
Vilius Samuolis you’re welcome! The electric should work causr it has more torque. The problem is the autonomy because of the batteries, but I prefer to ride the jetsurf for 10min at 30km/h instead of having a powerful thermic engine where I could ride at 50km/h for 1 hour, but that will not work because of leaks, because of cooling system, because of exhaust gas etc...
Really good job, congrulation and i have a question: how can i find jetsurf jet engine, for body also i know how to make it, but jet engine ; where can i find
bahadır yılmaz you can take an engine from a chainsaw for example, but I advise you a power of more than 8kw if you want to have fun! Mine is only 1,6kw but I will change it :)
Très bon travail. Je me suis lancé sur le même projet, avec le même type de moteur (un peu préparé, pour essayer de sortir au moins 5cv..) et même soucis, manque de puissance. J’ai donc décidé de passer ma planche en électrique (moteur SSS 56123, en 12s, 8KW), j’attend juste que l’eau soit meilleur pour aller l’essayer ;). Mais ça ne vaudra pas le bruit et les sensations du 2 temps. Pour info, le seul moteur thermique que j’ai trouvé qui pourrait être adapté (11cv, refroidissement liquide, compact) c’est un MVVS 116 IRS LC. Bonne continuation !
Faut naviguer à l’electrique! Un couple beaucoup plus puissant sans avoir à penser aux points négatif comme le système de refroidissement ou les gaz d’echappement. Tu t’en sortiras mieux que moi!
Pour la puissance c’est clair, mais l’autonomie et le poids reste un gros problème. Ma planche fait maintenant 25kg, et d’après ce que j’ai calculé, je devrait profiter de... 5 a 6 min de ride 😂Donc pour 20 min, qui resterait convenable, je t’explique pas le poids de la planche. En tout cas top ta vidéo, la partie usinage CNC pour le moule 👍 et ton anglais 👌. En espérant voir un jour une vidéo de ta planche qui marche un peu mieux !
Hi! Nope, it didn't melt, we measured the temperature in the exhaust gas pipe, and it was something like 80 degrees below tthe melting point, or something like this. We checked before and there was no problem, and when we tested it with full power, it didn't melt :) I made a tutorial on how I made the one way valve on my channel, you take take a look, it might inspire you :)
@@yaelpericard im in the process of building one, but ill use a much more powerfull engine, and im skeptical about 3d printed parts. I think i might do something similiar to yours but out of metal, just so i dont have to hit and miss since i dont have a printer, and have to order everything..
@@Blackdavid2011 I don't have but I made a pretty good tutorial on how to make it, check the other video of the one way valve on my channel ! and make your own :)
PTMmotor Hoàng it's hard to guess because we didn't know all the prices, as the university provided epoxy, tools etc... and how many hours spent on this as well, should you add a salary or not? too many parameters :(
@@yaelpericard i have under build jetsurf same motor to you but i need to add sprocket. Soon i started posted in youtube the outcome of 49cc engine. The problem is the motor is not a water cooled. I searching in online store i cannot see water cooled small motor😅
Unknown UnNamed yeah, the motor gets so fucking hot! That was my plan to have a water cooling system around the exhaust gas pipe at least, by taking the water from the ocean, but didn’t have time to build it :( keep me updated of your invention! I’m interested ;)
@@yaelpericard ok copy. and if you have any idea or sources of water cooled engine pls update me because may be soon need to replace my air cool to water cool engine
yaelpericard lol.. yeah, I just watched it, im wondering, i thought the exhaust kinda hot and melted your one way valve printed before, did that happened?
Jo Ko noooo! I was scared as well, but We have checked the temperature of the exhaust gas, and it was 160 degrees celcius, and the melting temperature of the plastic that we used was around 200 degrees :)
yaelpericard, What is the power of the engine? I think your impeller is not right. It needs to be deployed. Narrow side to the entrance, wide side to the water outlet.
Alexochmk I totally agree with you! When I checked the real jetsurf, I understood that it was the wrong side, but I took the model of the impeller on grabcad, so I didn’t make it. I tried to modify it, and I have almost finished but we had a lack of time... but don’t worry, as soon as I’m able to change it, I will do it and will make a new tutorial !
S I K when We had the 3D model of the jetsurf, I split it into 2 parts, then I hided one, took an offset surface of 0mm, extended the edges with the "law extention" function and I made a flange!
Dear Sir, My name is Zoltan. I would like to build a board. I saw Your video on UA-cam. So that, I would like to ask You to help me. Give same parameters or advice which is usefull. Is it possible? I am waitinng Your answer. Best regards Zoltan
nuovovideo unfortunately no, I made another tutorial on how to make the jetsurf in 3D, you can watch it and you will learn a lot of things ;) and you will be proud of yourself as well ;)
Pablo San Miguel hi! Thanks for the comment ;) I made another video where I was dragged by a boat (so it was without the engine). The goal was to analyze the stability of the board. For riding the jetsurf, there is only the video at the end of this tutorial, because the engine is not powerful enough... :( sorry!
honestly, the real jetsurf from industry has a power of 11.7 kw, to ride at 50 km/h but I think you have fun with 25 km/h already, so... using an engine of 6 kw should be already a good thing! :)
amoasis it could be nice, but it might be complex to implement it, because of vibrations, it adds more friction as well and the engine is already not powerful enough... but the idea is good! :)
Lukasio akul unfortunately, I'm not in norway anymore and I'm not working as well, so I can't do anything... anyway, it's too much work (and pain in the back and hands) so I'm not ready to make another one :)
Lukasio akul of course it is worth! If you like manual work, definitely it worth :) but you need a powerful engine :) maybe you should try an electrical one ! Less problem I think :)
yaelpericard absolutely. That was the plan all along. I dont like gasoline engine's. I just need to calculate what kind of an motor I need to power it.
Hey man would really love it if you could send me the stl files from the other videos ... im from egypt and things like these are pretty expensive and id like to have a go at trying to make one .. so please contact me
Wyatt Barriger you mean the price? It’s a prototype so not for sale ;) and for an estimation of the price, it’s hard to guess, as you have to consider the use of the tools, breaks, test, time consumed etc :(
filipposSdred this motor is a 49cc from a pocketbike, don’t remember the brand. Anyway, the power is something like 1,6 hp and you need more than 10 if you want to have fun ;) so this motor is too small :(
filipposSdred rhe rpm doesn’t matter, what counts is the torque your motor can produce. My motor ran until 7000rpm, but as soon as it was in the water and me on it, there was so much friction+viscosity of the water than I don’t think I ran more than 2000rpm (based on the sound)
filipposSdred hehe yes maybe ;) but it’s always easier to say what’s wrong than think about it before. Without experience, my goal was to try if it works with 1 shaft, just a simple system, and even with just this, it was a real pain in the ass 😂 . So with 2 shafts, you will have more friction, more vibrations, you need to be more accurate when you position the shafts, then you also need a gear, then more space, then you will be heavier etc etc ...
Wyatt Barriger if you check my other videos I explain how to model it in 3D, as well as some other tutorials, on the mold or exhaust valve, if you are interested, you can take a look :) but it takes a lot of time! And between dreams and reality, it’s a lot of work...
Hi Gael, We loved your video !!! ... It shows that you are passionate about technology. Even with your "small budgets", you manage to create desires and why not ... vocations! In case you might be interested in participating in MASS COMMERCIAL PRODUCTION, then let me know, as I can introduce you to my ... Boss who is interested in Manufacturing & Marketing of all types of aquatic "gadgets & toys" aquatic like Seabob, Jetsurf, underwater drones, hoverboards ... In any case, I wish you a lot of success in your projects and hobbies.
ERIC CHAN hey hey thank you! It’s always nice to hear compliments :) It was a fun project, what I like is to know that it’s possible to make it! Mass production is annoying, because of many issues, homologation etc, and it’s not funny :) I’m a mac gyver!
absolutley amazing. Im in plans of making sometinh similar but instead of surfjet i will be making a small kayak. Have some questions: 1. how do you know where the outblow/nozel/ will be? If its too low or high placed the pwoer will not be be good. 2. whats the dimensions of the board? width height and length. 3. what engine did you use? Would love to see this with a better engine. here is a guy that have a 15 engine. ua-cam.com/video/Lfl2PiuhDPk/v-deo.html Also for example hison jet kayak has a 125 cc engine and it goes 40 km/h on water. Unfortunatlly its not that simple just put a bikeeninge on since it has something to do with torqe. But you should look it up and then put a good engine on cuz i would love to see it in more speed./regards
Hi Kuk! thanks for your comment :) for your small kayak, I recommand you to put the nozzle close to the kayak at the end (behind you). If it's too deep, your drag will be too high, if it's too close to the kayak, you might not get the best efficiency because the kayak can create some turbulences. The dimensions of the board are about 185 cm by 65,5 cm by 18 cm if I remember, kind of similar to the real jetsurf. The engine was an engine from a pocketbike, so 1,6 kw, not powerful at all, I know that, but I have to find another engine more powerful for that! I saw these crazy brazilians, they made a very good job with not so many equipments :)
or this one www.ebay.com/itm/125CC-Motor-Engine-for-XR50-CRF-CT70-ST70-CT110-MANUAL-Clutch-4-Speed-Dirt-Bike-/142352878588 here you have a 90 cc jetsurf. pictures on the engine: www.trampbatar.se/butik/produkt/jetsurf-kolfiber/ please install a better engine i would love to see your board go fast on the water. I bet you could sell it for like 1500 dollar when its done since its a nice build. The new jet surfs a extremley expensive , like 7k dollar for a new one.
Bonjour, etant egalement tres bricoleur je suis en plein dans la fabrication d un JETSURF, mais ayant eu des pocketbike en 49cc comme votre moteur je suis vite passé au 39cc a refroidissement liquide "copie BLATA pocket de course"et c est avec se moteur que je compte faire le miens, en 49cc je ne depasser pas les 50kmh alors qu'en 39cc refroidissement liquide je pouvais aller a plus de 100kmh cela fait une tres grosse difference !!!!!!!! J ai egalement remarqué que vous n'avez pas de redresseur de flux en sortie de turbine donc la sortie d'eau se fait en tourbillon donc perte de puissance,j'ai testé une turbine fabrication maison "imprimante 3d" de petite taille sur un bateau RC et cela depote severe,je l ai tester avec des potes qui ont eu des bateau RC acheter dans le commerce et ils étaient étonnés de la puissance de sortie pour une si petite turbine,donc je l'ai juste agrandi et modifier pour mes besoin, de quelle taille etait votre turbine,le diametre de l'helice? avez vous un contact ?mail,forum ou autre pour que l on se partage nos connaissance et de quel coin étes vous?
Bonjour Gabriel! ravi de voir que ce projet est en open source et intéresse du monde :) alors tout d'abord, contrairement à ce que tu pense, j'ai bien installé des redresseurs de flux (4 je crois). Je t'invite à regarder ma vidéo "modelling of a jetsurf in Nx" où j'explique en détails tous les composants. Je suis surpris que ton 49cc va moins vite que ton 39cc, car même si le 39 à un liquide de refroidissement, je vois pas en quoi ça joue sur la puissance... Le couple de notre moteur était pas assez puissant, donc 39 ça devrait être enjcore moins... Peut être que le moteur a un meilleur rendement lorsqu'il est bien refroidi :) ¨Pour l'hélice, j'ai utilisé une imprimante 3D, mais les pales étaient assez flexible... j'ai essayé de mettre de la fibre de carbone dessus, et c'était carrément dur, mais la surface était très rugueuse... donc je suis resté sur le plastique. L'hélice a donc un diamètre de 72mm, et ceux du vrai jetsurf font 90 je crois :) la longueur de turbine doit faire 20cm à peu près... on a pas trop fait de calcul par manque de temps... Voici mon mail: yaelpericard@msn.com Envoie des photos de ce que tu as fait! pas de problèmes pour échanger connaissances et conseils :) Je suis basé dans la drôme, et toi?
moi je suis sur Rennes,en fait le 49cc fait au alentour des 4cv et tourne au alentour des 4500 t/min alors que le 39cc fait au alentour des 13cv et tourne a environ 12000 t/mins donc grosse mais vraiment grosse difference je peut te le confirmer ayant essayer les deux moi je fait tous en PLA je le sais c est pas top mais c est un projet que je reproduirais une fois fonctionnel et le PLA s imprime vraiment mieux et plus facilement que d autres materiaux
what do you mean? I'm right foot in front, that's how I feel comfortable, and on the real jetsurf, there is one pad before the cover and one pad after. But I agree with you on the way that on the real jetsurf, the pads are dobbled for goofy and regular people, which is not my case, and the center of gravity changes a bit because your weight is not in the center, is it what you meant?
@@yaelpericard the one in the front should be in a little angle and a little backward ... if you do Kiteboarding or wakeboard you will see what I'm talking about... but if you feel comfortable well .. congratulations. anyhow you did a good job....
@@rubenvf9772 thanks for your compliment! Yes I practice wakeboard and kitesurf, but I have some knee problems (I broke my cruciate ligament on the right knee, which is the one in front) so I don't feel comfortable to have an initial rotation at the beginning :) anyway the motor was not powerful enough to ride it so it doesn't matter, but I see your point! Nevertheless, it's possible to change the angle on the pads, but not the position :(
It is great to see some NTNU smart young guys works. I am proud of you, since I also graduated from NTNU.
I just started building my jetboard. Unlike other videos i'll probably have a functioning one. The concept behind your hull was very innovative and deserves more acknowledgement than what you have.
it looks like you'rea 4 or 2 stroke motor....... good luck.
Yes,i'll be making some modifications to that engine to create my board
TheyCallMeKai thank you! Sometimes I get bad comments, which is very annoying because this video is made for people like mac gyver, who like manual work, I’m not an expert and just try to inspire people who would like to build something like that :) thanks for your support!
Great project and great explanation. Thank you!
matthwy1 you’re welcome!
AWESOME BUILD
Fantastic!☆
Brilliant!! I want one
Frends are the best thing in projects👌
totally agree with you!
Gratz man it is a perfect work l wish we gonna see more powerfuull version of your board.
Dude that is amazing!
Aleksander Rawlins thank you!
Nice tutorial, thank's for sharing. Joli taf, bien joué les gars.
Ali Digitali merci !!!!
Nice Great Job
Nice! Keep it up!
Hello thanks for the tutorial but why dont you guys use brushless motor and battery ?
AurorA 360 it will be the next step! I will make a tutorial when I will do it (but not this year 😂)
Seems easy enough!
Excellent work. Clearly your professor see this. Class projects are challenging but rewarding. Again, well done! (quick question, in the final test, I see bubbles in the jet discharge. Could this be cavitation?)
adam lee thanks! As a professor, I enjoyed supervising this thesis! Very sad that the university doesn't extend my contract... for the final test, it's a good question. In theory, I would say no because our engine is limited to 7000rpm about, which is also at this rpm that the cavitation appears, but when I was on it, I was full power and it didn't have enough torque, so the engine was at a low rpm...
Realy cool
Hi, put a gearbox 2 to 1 and use a impeller 96mm. Great work!
thanks!!! but adding a gearbox means more weight, need more space, more friction, more precision etc... it was the alternative, but due to lack of time, it was not possible to add it :(
Nice work
Nice job
Greate video i will make one soon
I am testing different jet boards where are you guys based?
Awesome job!
To bad on the weak engine though...
Did you calculate on the back pressure?
A 2stroke engine need the right backpressure to function properly and by rebuilding the exhaust and especially mounting the one way valve you added further pressure to the whole system that might comprohend the full power outcome of the engine.
Try using a weedwhacker engine with more horsepowers, they come in a vary even up to as much as 5hp and more!
And welding a cylinder outside the cylinder of the engine and making a labyrinth of the old aircooling vanes on it and put in a inlet in the bottom and an outlet at the top with hose fittings so you could use some the pressure from the hamilton designed water jet to cool the engine itself.
Hope som of this might help you :)!
I'll keep on watching, thats for sure!
PezDJ thanks for compliment! i would like to change the engine and get a more powerful one... your idea is nice but I still didn't find these 5hp... need to investigate more :) your idea about the cooling system is also nice but might be complex to build :) We didn't have the time to calculate the back pressure :(
Well we got the 5hp ones here in Sweden, though its not a weedwhacker then its more used to remove small brusches and such.
Might be called brushcutter :) and they need more power to be able to cut through small stems etc aswell :).
If you got a angle grinder, a strong nipper or some sort of power cutter plier and some material with the right dimensions and welding skills it might take maybe an hour or two to bild the cooling system at the most :).
Ah well thats to bad, hope you will get a good engine in the future then :).
Thats the worst with 2stroke, thats why they got the "bladder" on the exhaust system to make give the right back pressure creating rebound pressure waves.
Keep on building :D, I'll gladely help with info if you need some :) been planning to build myself one sometime but i dont have the time at the moment haha got so many things going on at the moment :P though I'm into building a electric one even though I got an engine laying around :P.
Thank you very much for your review ! What is the correct name of your engine?
It was from a pocketbike, so not very powerful :( i don’t remember the name but try to find something that is around 10 horse power!
dude ... very good your work I'm starting my project and yours was sensational, but I think only lacked power, I'm from Brazil and a people here did with motor bike 135cc 2 stroke was very fast ... I'm in doubt How many mm do the propeller and turbine?
yo! I agree with you, we had a lack of power, we knew it will be the problem but we had no other motor :( For the impeller, we chose 72mm diameter. This choice was made because I measured roughly on a real jetsurf (with my hand so not precise) so if I remember, it was something like 70 or 75mm. If you take too small, you will not have any propulsion, if you take too big, you need more torque because of more resistance :) good luck with your project and don't hesitate to send me videos of your invention! :)
@@yaelpericard thank you very much and congratulations for sharing this information with everyone ... I made a squeal that I can have a good time .. a big hug here from Brazil . ua-cam.com/video/3El2AOcT3DQ/v-deo.html
Dude thats awesome. Try using a 100cc 2 stroke gocart engine. It will work. Please you have to do it. :D
I like that your making a affordable board jetsurf boards are ridiculous expensive DIY
Hello thanks for you video! Do you now how much water your jet pump per minute?
Andrey Rybka thank you! I didn’t have the time to finish the full study of the pump, so I can’t really tell you :(
Brilliant - you are very handsome also. :-)
+1 for Tool playing in the lab :)
muahaha that' the part of the game! ;)
Can I ask you something. My jetsurf engine is hard to explode, there is no garenti, release the gas and turn off the engine. Now adjust the gas and wind to make the engine easier. Thanks.
greattt very good job .. but you need more power engine in this place you can tryed to put board engine like yanaha 10 or 15 hp or rc engine that have much power .. continium working . you made a very very good work
thank you!
greattt very good job .. but you need more power engine in this place you can tryed to put board engine like yanaha 10 or 15 hp or rc engine that have much power .. continium working. you made a very good work
Friend which rc engine I could use in this project, because I'm building one here in Brazil
we could manufacture the table alone and as soon as the blessings $ greetings
Petite question, en sortie de moteur, avez vous branché directement votre helice ou etes vous passé par un reducteur pour multiplier le couple ? Peut etre que ca raisoudrait le probleme de puissance..
Bonjour Enzo! En effet, l'idée c'était d'avoir un réducteur, mais nous avons eu 2 problèmes: Le premier c'est qu'avec les moyens que nous avions, il était difficile de faire ce système, d'autant plus que le moteur aurait été décalé par rapport à l'axe (ou alors faire un système comme un joint de cardan mais ça complique encore les choses...). Le 2ème problème c'était les vibrations, rien qu'avec le joint qui lie l'axe du moteur avec celui de l'hélice, c'était un amortisseur, ça vrillait un peu... donc on a pas pu développer ce réducteur :( mais l'idée y était!
Great video I’m actually trying to figure out building one myself as the price on a manufactured one is insane! Would you share your files so I could follow your build ? If not I completely understand
Hi man! I can't share the files but I have made a 3d modelling tutorial that you can find on my channel, this should help you a lot !
hello its awesome . what type of engine did you use ? im planing to use 58cc 2.63kw chain saw engine do you think it could work?
It might be limit... the new jetsurf use engines of 11kw I think, so you might have a problem with the torque when you will start... but if you never try, you never know!
@@yaelpericard thanks for the reply mate . I might give it try 👍
@@shaanamir4631 Hi Shaan Amir I´m building a motorizaed surfboard and I´m planing to use exactly the same engine. You already built yours? How did it worked the engine? Regards!
Hola Como conseguiste el diseño de la tabla gracias
how does the engine cool itself if its sealed inside the vessel? did you have problems with the air intake of the motor being so hot, loss of power?
Jose Martinez we didn't have the time to make the cooling system... it became hot but we put a thermal shield around it :)
thanks for the quick reply. congratulations on your work, super cool.i think you will need a liquid cooled motor and i know they are available in small displacement 4 and 2 stroke. aircooled will generate too much heat in the engine compartment and since you cant ventilate too much due to water spray being potentially ingested by the intake, it will get dangerously hot and become a fire hazard. i dont know if you are also aware of a backfire and the danger of an explosion caused by it. you should add a flame arrestor on the carb and a safety blow off port for the engine compartment. the engine lid could become a projectile and injure you. its scary. it happened to me in a jetski.
Jose Martinez thanks for advice! As soon as I come back to norway, I will work on it during my free time :) I will give some news through the channel !
@yaelpericard Tell me more about this one way valve please!!Where can I buy It?
Joaovitor Oliveira Cortes you can build your own one! I made a video tutorial on how to make a 3D model of the valve+ the 3D printing :)
@@yaelpericard search for the Chanel jet surf caseiro and Daniel Uchôa cause these Brazilian dudes are making some Magic around here with homemade jetboards, I Hope It helps with your cooling system and your Power problem
Actually 1.6 hp ( 5000 watt or 7 hp minimum) engine is not enough for the jetsurf speed but ıt could normally make at least 10 km/h . 55 lbs trolling motor can go as well 7 km/h. I think the problem is the volume of board and position of engine and also propeller. Board must be 180 lt or more. If you are 90 kg. May be i am wrong but ıt look great and deserve to go better👍
how do you stop water from entering the exhaust pipe?
I made a one way valve! If you check my other videos, I made a tutorial on how to make a one way valve ;) 3D model+ 3D print!
good job guys!!
how´s the board doing now?
Thanks! I didn't touch it for a long time, cause I have other projects. I should change the motor maybe ;)
Hey, been wondering if it would be possible to use a 2 cylinder two stroke engine that is used in rc aircrafts. Any ideas?
Vilius Samuolis hey! I think it would be possible, but you add more parts and you also don’t have that much space... it might be tricky to control it. I had the idea at the beginning to use 2 engines in order to have more torque, but when I started thinking about the connections of the shafts, then it was a problem, cause you need to add gears, the motors need to rotate at the same speed etc. It’s easy to make something complex, but it will cost more and it will also be hard to control everything. Be aware that there are a lot of vibrations, so the more you add news parts, the more you will have interractions and you can have some gaps or frictions...
Thanks for a reply, and yeah, I see... I'm thinking of making a jet surfboard through summer, or if needed spend even more time. At the moment I'm just gathering information and I couldn't found any small, powerful engines (at least 12 hp) that wouldn't have cosmic price. As I see it's been around a year since you tried to make a surfboard and wondering, did you overcame the engine problem with any idea? Maybe you have some recommendations about what engine to use?
Vilius Samuolis yes it’s about 1 year, but I made a world trip for couple of months, then I got a knee surgery and now I just started a new job, and new flat as well, so I don’t have time for this summer (I will go for holiday as well) but I will probably work on it during the winter and hope to test it in May 2019 ;) I plan to change it for an electric engine, it can solve a lot of problems! I will make tutorial for that as well, so you should subscribe to my channel and you will be in touch of what I will do! ;)
Okay, will be interesting to see how electric one is made ;) keep up. And thanks for the answers, it helped a lot.
Vilius Samuolis you’re welcome! The electric should work causr it has more torque. The problem is the autonomy because of the batteries, but I prefer to ride the jetsurf for 10min at 30km/h instead of having a powerful thermic engine where I could ride at 50km/h for 1 hour, but that will not work because of leaks, because of cooling system, because of exhaust gas etc...
Really good job, congrulation and i have a question: how can i find jetsurf jet engine, for body also i know how to make it, but jet engine ; where can i find
bahadır yılmaz you can take an engine from a chainsaw for example, but I advise you a power of more than 8kw if you want to have fun! Mine is only 1,6kw but I will change it :)
Jetsurf MSR engine cost about 4000€ only the enigne no exhaust and so on. I got an PDF with prices from MSR.
Tu es dans quelle ville , j'ai besoins de quelques conseils merci c'est excellent 👌 ce que vous avez réalisé
Issam Abdelkaoui là je suis en tour du monde... pour un bon moment!
Très bon travail. Je me suis lancé sur le même projet, avec le même type de moteur (un peu préparé, pour essayer de sortir au moins 5cv..) et même soucis, manque de puissance. J’ai donc décidé de passer ma planche en électrique (moteur SSS 56123, en 12s, 8KW), j’attend juste que l’eau soit meilleur pour aller l’essayer ;).
Mais ça ne vaudra pas le bruit et les sensations du 2 temps. Pour info, le seul moteur thermique que j’ai trouvé qui pourrait être adapté (11cv, refroidissement liquide, compact) c’est un MVVS 116 IRS LC.
Bonne continuation !
Faut naviguer à l’electrique! Un couple beaucoup plus puissant sans avoir à penser aux points négatif comme le système de refroidissement ou les gaz d’echappement. Tu t’en sortiras mieux que moi!
Pour la puissance c’est clair, mais l’autonomie et le poids reste un gros problème. Ma planche fait maintenant 25kg, et d’après ce que j’ai calculé, je devrait profiter de... 5 a 6 min de ride 😂Donc pour 20 min, qui resterait convenable, je t’explique pas le poids de la planche. En tout cas top ta vidéo, la partie usinage CNC pour le moule 👍 et ton anglais 👌. En espérant voir un jour une vidéo de ta planche qui marche un peu mieux !
How did you 3d print the one way valve? Does it not melt from the exhaust gas?
Hi! Nope, it didn't melt, we measured the temperature in the exhaust gas pipe, and it was something like 80 degrees below tthe melting point, or something like this. We checked before and there was no problem, and when we tested it with full power, it didn't melt :) I made a tutorial on how I made the one way valve on my channel, you take take a look, it might inspire you :)
@@yaelpericard im in the process of building one, but ill use a much more powerfull engine, and im skeptical about 3d printed parts. I think i might do something similiar to yours but out of metal, just so i dont have to hit and miss since i dont have a printer, and have to order everything..
@@Blackdavid2011 if you have a small cnc machine or milling machine, then you can create the components of the one way valve ;)
@@yaelpericard do you have an stl file for the valve?
@@Blackdavid2011 I don't have but I made a pretty good tutorial on how to make it, check the other video of the one way valve on my channel ! and make your own :)
what engine did u use?
\Hi I can ask
The total cost of completion you spend on this
Thank very like
PTMmotor Hoàng it's hard to guess because we didn't know all the prices, as the university provided epoxy, tools etc... and how many hours spent on this as well, should you add a salary or not? too many parameters :(
How does Air get to the motor?? If the compartment is air tight??
Malcolm Adams thanks to the air intake tube in front of the board :) where the canles go through ;)
ca deboite ,congrats!
Mo Puccino merci chef! Mais le travail est long pour arriver à un truc potable 😂
you axle coupling can b bought at tractor supply for 20 bucks
@yael pericard how many millimeter is the impeller please?
I think it was 72 mm if I remember well...
Will you change the engine?
Аниматор СБ yes of course! That's the plan!
Meaby you know some good petrol engine set from aliexpress ?
i think you need a sprocket from big input to small output maybe x2 or x3 the rpm of your motor speed. for 49cc very fast using the sprocket
Unknown UnNamed true! But you add more components, it has to be aligned etc... the system become more and more complex ;)
@@yaelpericard i have under build jetsurf same motor to you but i need to add sprocket. Soon i started posted in youtube the outcome of 49cc engine. The problem is the motor is not a water cooled. I searching in online store i cannot see water cooled small motor😅
Unknown UnNamed yeah, the motor gets so fucking hot! That was my plan to have a water cooling system around the exhaust gas pipe at least, by taking the water from the ocean, but didn’t have time to build it :( keep me updated of your invention! I’m interested ;)
@@yaelpericard ok copy. and if you have any idea or sources of water cooled engine pls update me because may be soon need to replace my air cool to water cool engine
@@yaelpericard Tnx
It is said that failure is the mother of success.
The attempt itself is no different from success.
How did you keep the exhaust out of water?
Jo Ko I used a one way valve, that I made myself :) I made a small tutorial for that, you can have a look, it was useful!
yaelpericard thx mate.. is there any chance you could help me with one way valve 3D design?
Jo Ko have you watched my tutorial? :)
yaelpericard lol.. yeah, I just watched it, im wondering, i thought the exhaust kinda hot and melted your one way valve printed before, did that happened?
Jo Ko noooo! I was scared as well, but We have checked the temperature of the exhaust gas, and it was 160 degrees celcius, and the melting temperature of the plastic that we used was around 200 degrees :)
Where can I buy the motor please?
What's the engine type? And engine specs? Got a link?
how to prevent air intake getting water?
Gustavo Tavares i added some stiffeners inside that would also keep water in case it gets inside :)
It is nice that you can try submarine
How much would one cost that u make
Matt Holmes it depends if you count the hours of engineering lol. And also the raw material that we failed... and some tests as well... hard to say!
material used?
Mustapha Ben carbon fiber
Hi friend, I would like to know if you would do a jet surf to deliver in Brazil?
Eduardo Costa hi! Sorry but I made this video as a tutorial to help people doing themselves, I’m not a factory ;)
I SELL JET SURF AND CAN SEND TO BRAZIL LOOK ON GUMTREE UNDER E BOARD EELCTRIC JET BOARD
What is the impeller diameter?
Alexochmk I think we took 72mm :) if I remember well
yaelpericard, What is the power of the engine?
I think your impeller is not right. It needs to be deployed. Narrow side to the entrance, wide side to the water outlet.
Alexochmk I totally agree with you! When I checked the real jetsurf, I understood that it was the wrong side, but I took the model of the impeller on grabcad, so I didn’t make it. I tried to modify it, and I have almost finished but we had a lack of time... but don’t worry, as soon as I’m able to change it, I will do it and will make a new tutorial !
How did you Made the model to the CNC mold
S I K when We had the 3D model of the jetsurf, I split it into 2 parts, then I hided one, took an offset surface of 0mm, extended the edges with the "law extention" function and I made a flange!
yaelpericard thaks
how did you make your propeller
SKL 3D modelling then 3D printing! ;)
yaelpericard was it strong enough
SKL for our prototype yes, it didn’t break, but I suppose that if we had a stronger engine, it would probably break...
Dear Sir,
My name is Zoltan.
I would like to build a board. I saw Your video on UA-cam.
So that, I would like to ask You to help me. Give same parameters or advice which is usefull.
Is it possible?
I am waitinng Your answer.
Best regards
Zoltan
János Mindenki you need a 3d software, a 3D printer and a cnc machine, do you have that?
What about 3d design? Do you share it?
nuovovideo unfortunately no, I made another tutorial on how to make the jetsurf in 3D, you can watch it and you will learn a lot of things ;) and you will be proud of yourself as well ;)
@@yaelpericard ok. thanks . can you give me only an idea of what is the size? i need how long ald large is it. Thanks
nuovovideo yo! I think it was 187cm X 65cm and the maximum heught close to the motor was 20cm ;)
+yaelpericard thanks for you video. Do you have any video riding de jetsurf? I want to know how powerfull are the engine.. awesome projet!
Pablo San Miguel hi! Thanks for the comment ;) I made another video where I was dragged by a boat (so it was without the engine). The goal was to analyze the stability of the board. For riding the jetsurf, there is only the video at the end of this tutorial, because the engine is not powerful enough... :( sorry!
Thanks!! How many HP and CC have the engine???
the power is 1.7 kw (not that much as you can see) it's from a pocketbike!! the cc is 49 !!
+yaelpericard And how much do you think you should have at least the engine to work properly?
honestly, the real jetsurf from industry has a power of 11.7 kw, to ride at 50 km/h but I think you have fun with 25 km/h already, so... using an engine of 6 kw should be already a good thing! :)
You have a lot of space you may put a small gearbox
amoasis it could be nice, but it might be complex to implement it, because of vibrations, it adds more friction as well and the engine is already not powerful enough... but the idea is good! :)
Hello. I'm wondering if you can make the body for me as well. And what would it cost
Lukasio akul unfortunately, I'm not in norway anymore and I'm not working as well, so I can't do anything... anyway, it's too much work (and pain in the back and hands) so I'm not ready to make another one :)
yaelpericard then im going to mine using an old surf board. And just one question. Is it fun to ride, is it worth the time and monej. Jes or no?
Lukasio akul of course it is worth! If you like manual work, definitely it worth :) but you need a powerful engine :) maybe you should try an electrical one ! Less problem I think :)
yaelpericard absolutely. That was the plan all along. I dont like gasoline engine's. I just need to calculate what kind of an motor I need to power it.
I can make jet body for you,e- mail me I"ll show you what I do.sergey18_1977@mail.ru,It will cost about 350$ without delivery
And... I see that the Vid was from 2017. How have you progressed?
Impeler 10cm diameter!very best
Valor ?
hi how much hp?
Brni Ghju i think it was something like 1,5hp 😂 not that much!
Motor bad 49cc very litlle power good power motor yamaha dt180 very strong...
Osney Macedo i should change the engine!
Ok I don't have a 3D printer, nor a saw nor do I know how to use that software....how can I build one?
Then you might have some problems to build one... try to watch pther tutorials then ;)
But where does the engine get air?
Hey man would really love it if you could send me the stl files from the other videos ... im from egypt and things like these are pretty expensive and id like to have a go at trying to make one .. so please contact me
Heey. How much for one?
Wyatt Barriger you mean the price? It’s a prototype so not for sale ;) and for an estimation of the price, it’s hard to guess, as you have to consider the use of the tools, breaks, test, time consumed etc :(
what motor is this? cc?brand?
filipposSdred this motor is a 49cc from a pocketbike, don’t remember the brand. Anyway, the power is something like 1,6 hp and you need more than 10 if you want to have fun ;) so this motor is too small :(
@@yaelpericard max turns of engine?with some gears maybe double ghe turns to 15.000 per m
@@yaelpericard you can easyle double the power if you have 2 water jets with 2 shaft and chain and master gear in center
filipposSdred rhe rpm doesn’t matter, what counts is the torque your motor can produce. My motor ran until 7000rpm, but as soon as it was in the water and me on it, there was so much friction+viscosity of the water than I don’t think I ran more than 2000rpm (based on the sound)
filipposSdred hehe yes maybe ;) but it’s always easier to say what’s wrong than think about it before. Without experience, my goal was to try if it works with 1 shaft, just a simple system, and even with just this, it was a real pain in the ass 😂 . So with 2 shafts, you will have more friction, more vibrations, you need to be more accurate when you position the shafts, then you also need a gear, then more space, then you will be heavier etc etc ...
Please give me a relevant link...
I want to build one.. maybe TWO...
Wyatt Barriger if you check my other videos I explain how to model it in 3D, as well as some other tutorials, on the mold or exhaust valve, if you are interested, you can take a look :) but it takes a lot of time! And between dreams and reality, it’s a lot of work...
Make an electric one with a BLDC motor.
that's the plan! :)
Electrify! =)
wie viel Watt? max Drehzahl?
Paul Pastuszka 1.6 kw :( only!
Hi Gael,
We loved your video !!! ... It shows that you are passionate about technology. Even with your "small budgets", you manage to create desires and why not ... vocations!
In case you might be interested in participating in MASS COMMERCIAL PRODUCTION, then let me know, as I can introduce you to my ... Boss who is interested in Manufacturing & Marketing of all types of aquatic "gadgets & toys" aquatic like Seabob, Jetsurf, underwater drones, hoverboards ...
In any case, I wish you a lot of success in your projects and hobbies.
ERIC CHAN hey hey thank you! It’s always nice to hear compliments :) It was a fun project, what I like is to know that it’s possible to make it! Mass production is annoying, because of many issues, homologation etc, and it’s not funny :) I’m a mac gyver!
Bravo pour ton nivaeu en anglais
Hi do you will share 3D data? Thank you :-)
sorry, you have to do it by yourself. I made a tutorial about how to make it in 3D, you can be inspired by that :)
Can you send NX program?
Filip Kokol haha nooooo, it would be too easy! If I make a tutorial, it’s for helping you to do it yourself ;)
absolutley amazing. Im in plans of making sometinh similar but instead of surfjet i will be making a small kayak.
Have some questions:
1. how do you know where the outblow/nozel/ will be? If its too low or high placed the pwoer will not be be good.
2. whats the dimensions of the board? width height and length.
3. what engine did you use?
Would love to see this with a better engine. here is a guy that have a 15 engine. ua-cam.com/video/Lfl2PiuhDPk/v-deo.html
Also for example hison jet kayak has a 125 cc engine and it goes 40 km/h on water. Unfortunatlly its not that simple just put a bikeeninge on since it has something to do with torqe. But you should look it up and then put a good engine on cuz i would love to see it in more speed./regards
Hi Kuk! thanks for your comment :) for your small kayak, I recommand you to put the nozzle close to the kayak at the end (behind you). If it's too deep, your drag will be too high, if it's too close to the kayak, you might not get the best efficiency because the kayak can create some turbulences.
The dimensions of the board are about 185 cm by 65,5 cm by 18 cm if I remember, kind of similar to the real jetsurf.
The engine was an engine from a pocketbike, so 1,6 kw, not powerful at all, I know that, but I have to find another engine more powerful for that!
I saw these crazy brazilians, they made a very good job with not so many equipments :)
www.ebay.de/itm/Big-Bore-6-Tuningmotor-Tuning-Vergaser-Pocketbike-Cross-Motor-pocket-Dirt-Bike-/362008510741?hash=item5449638115:g:a2gAAOSwHLNZQXCx Auction Says 6,6KW pocketbike engine.^^ Its pretty cheap maybe a try worth.
or this one www.ebay.com/itm/125CC-Motor-Engine-for-XR50-CRF-CT70-ST70-CT110-MANUAL-Clutch-4-Speed-Dirt-Bike-/142352878588
here you have a 90 cc jetsurf. pictures on the engine: www.trampbatar.se/butik/produkt/jetsurf-kolfiber/
please install a better engine i would love to see your board go fast on the water. I bet you could sell it for like 1500 dollar when its done since its a nice build. The new jet surfs a extremley expensive , like 7k dollar for a new one.
like si tes fr
are you radiant gamer?
Bonjour,
etant egalement tres bricoleur je suis en plein dans la fabrication d un JETSURF,
mais ayant eu des pocketbike en 49cc comme votre moteur je suis vite passé au 39cc a refroidissement liquide "copie BLATA pocket de course"et c est avec se moteur que je compte faire le miens,
en 49cc je ne depasser pas les 50kmh alors qu'en 39cc refroidissement liquide je pouvais aller a plus de 100kmh cela fait une tres grosse difference !!!!!!!!
J ai egalement remarqué que vous n'avez pas de redresseur de flux en sortie de turbine donc la sortie d'eau se fait en tourbillon donc perte de puissance,j'ai testé une turbine fabrication maison "imprimante 3d" de petite taille sur un bateau RC et cela depote severe,je l ai tester avec des potes qui ont eu des bateau RC acheter dans le commerce et ils étaient étonnés de la puissance de sortie pour une si petite turbine,donc je l'ai juste agrandi et modifier pour mes besoin,
de quelle taille etait votre turbine,le diametre de l'helice?
avez vous un contact ?mail,forum ou autre pour que l on se partage nos connaissance et de quel coin étes vous?
Bonjour Gabriel! ravi de voir que ce projet est en open source et intéresse du monde :) alors tout d'abord, contrairement à ce que tu pense, j'ai bien installé des redresseurs de flux (4 je crois). Je t'invite à regarder ma vidéo "modelling of a jetsurf in Nx" où j'explique en détails tous les composants. Je suis surpris que ton 49cc va moins vite que ton 39cc, car même si le 39 à un liquide de refroidissement, je vois pas en quoi ça joue sur la puissance... Le couple de notre moteur était pas assez puissant, donc 39 ça devrait être enjcore moins... Peut être que le moteur a un meilleur rendement lorsqu'il est bien refroidi :) ¨Pour l'hélice, j'ai utilisé une imprimante 3D, mais les pales étaient assez flexible... j'ai essayé de mettre de la fibre de carbone dessus, et c'était carrément dur, mais la surface était très rugueuse... donc je suis resté sur le plastique. L'hélice a donc un diamètre de 72mm, et ceux du vrai jetsurf font 90 je crois :) la longueur de turbine doit faire 20cm à peu près... on a pas trop fait de calcul par manque de temps...
Voici mon mail: yaelpericard@msn.com
Envoie des photos de ce que tu as fait! pas de problèmes pour échanger connaissances et conseils :)
Je suis basé dans la drôme, et toi?
moi je suis sur Rennes,en fait le 49cc fait au alentour des 4cv et tourne au alentour des 4500 t/min alors que le 39cc fait au alentour des 13cv et tourne a environ 12000 t/mins donc grosse mais vraiment grosse difference je peut te le confirmer ayant essayer les deux
moi je fait tous en PLA je le sais c est pas top mais c est un projet que je reproduirais une fois fonctionnel et le PLA s imprime vraiment mieux et plus facilement que d autres materiaux
mon modele reduit de bateaux RC qui m a servit de base est vraiment trop puissant et du coup survole l'eau donc perte de propultion !!!!!
je recherche surtout pour le moment une solution pour me faire une board pour embarquer tous le matos
Привет, чертежами доски поделишься?
Прошло два года, похоже что нет))
Can i tell me Engine Models？
NP2HK_ Crowley I don’t remember but it was from a pocket bike, 1,7 kw ;) not strong enough :(
yaelpericard thx
just a little suggestion, the position of the pads are wrong.
what do you mean? I'm right foot in front, that's how I feel comfortable, and on the real jetsurf, there is one pad before the cover and one pad after. But I agree with you on the way that on the real jetsurf, the pads are dobbled for goofy and regular people, which is not my case, and the center of gravity changes a bit because your weight is not in the center, is it what you meant?
@@yaelpericard the one in the front should be in a little angle and a little backward ... if you do Kiteboarding or wakeboard you will see what I'm talking about... but if you feel comfortable well .. congratulations. anyhow you did a good job....
@@rubenvf9772 thanks for your compliment! Yes I practice wakeboard and kitesurf, but I have some knee problems (I broke my cruciate ligament on the right knee, which is the one in front) so I don't feel comfortable to have an initial rotation at the beginning :) anyway the motor was not powerful enough to ride it so it doesn't matter, but I see your point! Nevertheless, it's possible to change the angle on the pads, but not the position :(
@@yaelpericard any plan to change the engine ?! this is the one I recommend : 2 stroke engine MSR 50.2 HXT, around 90cc
Robby bruchless motor would be nice as well !!
Use electric selfcharging tech
May I buy your model? NX
oishi p no sorry, you have to work for yourself
Olá Boa tarde vende só a prancha para brasil qual valor?
Brother tô com projeto de montar 2 pranchas ja tenho o desenho do molde em tamanho real 1.86mx59cm...vc é da onde?
@@MegaYenso opa blz sou toledo pr .chama no wats 45998593504