The files only include one option. However if you were to buy it and ask for it, I can send you a full mirrored version afterwards. There is no fixed option, but you can just use it without the nozzle and not cut the hole for the steering shaft in the hull.
Hi Stepan, thanks for the video. I have had a look at some of your other builds- really great! A question, if I may (two actually)- I want to build a boat that uses the 6024 water jet, it is approximately 16mm diameter at the nozzle. Can I down scale your waterjet to this size? Secondly, I want to put a KaWeMa style reverse bucket on the water jet- is it possible to modify your water jet to take one? Thanks for your time.
Hi, unfortunately it is not possible to change scale of the M-Jet 30, because that would also affect sizes of all holes for bearings, screws, motor mount pattern and servo mount. All of these dimensions would not make sense any more. Also, I am not planning to add a reverse bucket this jet drive, because I do not need it and prefer the lower weight and simplicity of going without it. The ball steering design also does not leave much space for any modifications. Thank you for understanding, Stepan
Hello! I really love your video, and I am going to build a rc boat with this moter and files, but what is the hardware you use, like controller, receiver and servo servo do you use?
Hi, nice! For transmitter I used radiolink RC4GS with R6F V2 receiver, hobbyking HK 15328D servo and turnigy marine 120A esc. But apart from the ESC (where quality is important), brand of the transmitter, receiver and servo does not really matter. The only important thing is that the servo is waterproof, and most importantly to put the receiver into a 100% waterproof box.
So, I bought the files for M-Jet 30 and I absolutely LOVE it. Been a fun project so far! But my question is, would you happen to have a file for a boat that my m-jet 30 will directly drop right in? I saw you have the one boat but that had a lot of the parts already built into the hall, meaning my purchase would be pointless.. Any chance you could direct me to a boat hall that I can drop this M-Jet into? Thanks!!
Hi, I have no file for a 3D printable hull that would work well with this jet drive. On my CGTrader page, I have a "Jetsprint hull for RC boats" which is a 3D printable mould that can be manufactured like in my carbon fiber hull video. Otherwise, I would just suggest you to buy a physical hull online, for example the Kehrer Modellbau jetsprint hulls will work well. kehrer-modellbau.de/en/KMB-RC-boat-hulls/Jetsprint-II/Jetsprint-II-Hull-without-cover
Hi Stepan, Great design! I`m curious about your thoughts: If I would scale it up, to approx. 50mm, do i still need the same rpm as the 30mm version? and what motor would you recommend?
Thanks! Target RPM drops with increased scale, the rule is that if you scaled the design up 4 times, the RPM drops 2 times - with the square root of 4. So for scale 50/30, you would need about 1.3 times less RPM, so 20000/1.3 = about 15000 RPM. And for a 50mm jet, you would need something like a 4094 motor or even bigger. But apart from that, scaling the jet drive is possible but comes with many drawbacks - many dimensions will not make sense any more, like the servo mount, bearings, etc.
Hi Stephen I am also very interested in scaling up the unit to incorporate into my hull as it is a big larger, with regards to scaling it up I would need to increase the bearing diameters and probably the shaft diameter to compensate for any flex and increased stability on the rotation. How would I go about doing that if I purchased you M-Jet 30 or 35 stl as that would be a finished single piece stl. Editing the stl would be hard to change bearing sizes ect without the original design files. Only upscaling would be easy with stl but modifying it would be hard. If I purchased your files would you be able to help me out with the 3d files so that I can upscale and enlarge the bearing and shaft sizes to industry standard sizes that upscaling would not achieve?
Hi I really like your design but i wanted to know would the hobbywing 2848SL 3900kv Brushless motor fit onto the mounting holes or would I have to buy the Turnigy AquaStar 3660-1700KV for it to work? Thanks in advance
The 2848 motor would not fit the motor mount, but also would not be powerful enough to spin the pump. I recommend using at least a 3660 motor. Any brand will work as long as you choose the kv correctly:)
Hi, the efficiency would be most likely higher, but the problem would be with the sizes of the servo, motor mounting holes, bearings and other hardware. By how much would you like to scale it up?
How do you mean? For using the M-Jet 30, you need to have a hull, cut a hole into it according to the manual and glue the jet drive into it. I also designed the M-Jet Sprint (see my channel) which has complete hull and the pump integrated
@@gwlith1578 The pump in the M-Jet Sprint is smaller than M-Jet 30 (27 vs 30mm) but it is heavily based on the M-Jet 30, there are no big differences. The M-Jet 30 is meant for bigger hulls (50cm) vs the M-Jet Sprint only has 39cm.
For a life-size kayak, this is unfortunately too small. If you are interested, you can check this bigger jet drive, a collaboration with my friend: th-cam.com/video/Nn_5Rk85wF0/w-d-xo.html It is still in progress.
Hello, I'm building a boat 36 inches long by 10 inches wide. I was wondering if I am installing 2 jets like this on my boat would this be correct and will I have enough power to move the boat forward quickly?
It depends on the weight of your boat, if it is a smaller one, then probably yes, but it will still be very slow. For your particular application, one much bigger pump (like 60mm diameter) might be better. Good luck with your build!
Štěpán Müller Hi, I bought already your stl prototype but not ready yet to 3D print it. Is it possible also to buy your motor assembly for this model. I am a novice in RC model making and got inspired to jump in because of your work. Thank you.
@@ganyruperto7186 Thanks, glad to hear that! Unfortunately I cannot sell you any physical parts, you will need to buy everything yourself. For buying the motor, electronics and possibly some other parts, I can recommend you hobbyking.com, it is a reliable store.
Could you please send me a link to this engine, its blueprints or tell me its dimensions? The most important parameter is how deep the engine block goes under the shaft.
I wonder what kind of speed I could get on a kayak before I burned out the motor? Maybe 2 motors mounted on rudder with lithium batteries remote mounted switch ......
I do not recommend this jet for a kayak, it is too small. Even two of them would still not produce enough thrust. For a bigger pump, check my M-Jet 60 video: th-cam.com/video/QfqbVi8Tezk/w-d-xo.html
The stores to buy from depend on your location. In europe, I use hobbyking.com a lot for the electronics. You might be able to get the screws in a local hobby store. And you will probably find the rest of the parts such as o-rings and bearings on amazon. Good luck with the SLA print, I would be interested to know if it works!
You can buy the files and 3D print your own unit. Files here: www.cgtrader.com/3d-print-models/hobby-diy/other/m-jet-3d-printable-jet-drive-for-rc-boats
Hey .. What is your recommendation to print the M-Jet ? I already bought it. Will print with ABS at 240 degrees. 80 bed heat. What do you think? Infill 100%
Hi, print settings are on page 4 in the manual: drive.google.com/open?id=10guq2Laz8EfP5fF6TGrs1q0CErPBnrqk The temperatures are not written there but I use 255 nozzle and 100 bed for ABS, 215 nozzle 60 bed for PLA. I recommend using PLA because of higher strength. The tolerances in the design are also meant for PLA. You can try ABS but you might have some problems with the stiffness of the impeller blades and tolerances in the nut slots etc. I definitely do not recommend printing with 100% infill, that makes the tolerances even worse. If you wish to use such a high infill, I would recommend dropping it at least to 90%.
@@darkspyful Yeah you can try it in ABS and 100% infill. But if it does not work and the pieces do not fit together correctly, try using the settings I recommended here and in the manual.
@@darkspyful Anyway, regarding the infill percentage, I recommend watching this video from CNC Kitchen: th-cam.com/video/AmEaNAwFSfI/w-d-xo.html That is another reason why I do not use 100% infill for my parts.
Hi, links for the M-Jet 60 can be found in the description for the M-Jet 60 Announcement video. You can find more information about the M-Jet 60 on the "Pretty fast surfboards" channel.
The price of the 3D model is 10$. You can purchase it here: www.cgtrader.com/3d-print-models/hobby-diy/other/m-jet-3d-printable-jet-drive-for-rc-boats Then, of course, you will have to buy all things necessary to build the pump by yourself. List of the things you need is in the manual: drive.google.com/file/d/10guq2Laz8EfP5fF6TGrs1q0CErPBnrqk/view?usp=sharing All internet links are in the description of this video.
I cannot sell you any physical parts. I only sell an STL 3D model (computer file), which you can 3D print on a 3D printer. You download the file and 3D print it.
I really like the design, the thrust is also quite impressive! Good video, got the pdf, thx
Really nice!! I have built numerous water jet drives with my printer!
This is amazing! This is beast!
Just bought the file! Thank you so much!!
Love your video
FANTASTIC
Sweet
I like how as soon as u put it in the water u gunit lol
I love this. Are there both CW and CCW options in the files?. Do you have an option for a fixed (non steerable) jet?
The files only include one option. However if you were to buy it and ask for it, I can send you a full mirrored version afterwards. There is no fixed option, but you can just use it without the nozzle and not cut the hole for the steering shaft in the hull.
Hi Stepan, thanks for the video. I have had a look at some of your other builds- really great! A question, if I may (two actually)- I want to build a boat that uses the 6024 water jet, it is approximately 16mm diameter at the nozzle. Can I down scale your waterjet to this size? Secondly, I want to put a KaWeMa style reverse bucket on the water jet- is it possible to modify your water jet to take one?
Thanks for your time.
Hi, unfortunately it is not possible to change scale of the M-Jet 30, because that would also affect sizes of all holes for bearings, screws, motor mount pattern and servo mount. All of these dimensions would not make sense any more. Also, I am not planning to add a reverse bucket this jet drive, because I do not need it and prefer the lower weight and simplicity of going without it. The ball steering design also does not leave much space for any modifications. Thank you for understanding, Stepan
@@mjetdevelopment Thanks so much for your rapid reply. I understand what you're saying.
Great design! What's the diameter of the propeller and the outlet? It looks pretty small.
Thanks. Propeller is 30mm, outlet is about 18mm.
Hello! I really love your video, and I am going to build a rc boat with this moter and files, but what is the hardware you use, like controller, receiver and servo servo do you use?
Hi, nice! For transmitter I used radiolink RC4GS with R6F V2 receiver, hobbyking HK 15328D servo and turnigy marine 120A esc. But apart from the ESC (where quality is important), brand of the transmitter, receiver and servo does not really matter. The only important thing is that the servo is waterproof, and most importantly to put the receiver into a 100% waterproof box.
Nice
🔵🔵🔵👍👍👍😀😀😀😀🔵🔵🔵
If you will use stopper interceptors (i mean like in airpline wings) may be it can be more efficient than rotated nozzle?
You mean using flaps that would work like a rudder? I think then the steering force would not be nearly as high.
@2 seconds into the video....Yah..That works crazy good! lol
So, I bought the files for M-Jet 30 and I absolutely LOVE it. Been a fun project so far! But my question is, would you happen to have a file for a boat that my m-jet 30 will directly drop right in? I saw you have the one boat but that had a lot of the parts already built into the hall, meaning my purchase would be pointless..
Any chance you could direct me to a boat hall that I can drop this M-Jet into? Thanks!!
Hi, I have no file for a 3D printable hull that would work well with this jet drive. On my CGTrader page, I have a "Jetsprint hull for RC boats" which is a 3D printable mould that can be manufactured like in my carbon fiber hull video. Otherwise, I would just suggest you to buy a physical hull online, for example the Kehrer Modellbau jetsprint hulls will work well. kehrer-modellbau.de/en/KMB-RC-boat-hulls/Jetsprint-II/Jetsprint-II-Hull-without-cover
Which hull are you using? Nice boat
Thanks! It is my custom CF hull: th-cam.com/video/PiMzstb3mUs/w-d-xo.html
Hi Stepan, Great design! I`m curious about your thoughts: If I would scale it up, to approx. 50mm, do i still need the same rpm as the 30mm version? and what motor would you recommend?
P.s. i bought the files, best design ever! Hard for others to match yours!
Thanks! Target RPM drops with increased scale, the rule is that if you scaled the design up 4 times, the RPM drops 2 times - with the square root of 4. So for scale 50/30, you would need about 1.3 times less RPM, so 20000/1.3 = about 15000 RPM. And for a 50mm jet, you would need something like a 4094 motor or even bigger. But apart from that, scaling the jet drive is possible but comes with many drawbacks - many dimensions will not make sense any more, like the servo mount, bearings, etc.
Hi Stephen I am also very interested in scaling up the unit to incorporate into my hull as it is a big larger, with regards to scaling it up I would need to increase the bearing diameters and probably the shaft diameter to compensate for any flex and increased stability on the rotation. How would I go about doing that if I purchased you M-Jet 30 or 35 stl as that would be a finished single piece stl. Editing the stl would be hard to change bearing sizes ect without the original design files. Only upscaling would be easy with stl but modifying it would be hard.
If I purchased your files would you be able to help me out with the 3d files so that I can upscale and enlarge the bearing and shaft sizes to industry standard sizes that upscaling would not achieve?
Hi I really like your design but i wanted to know would the hobbywing 2848SL 3900kv Brushless motor fit onto the mounting holes or would I have to buy the Turnigy AquaStar 3660-1700KV for it to work?
Thanks in advance
The 2848 motor would not fit the motor mount, but also would not be powerful enough to spin the pump. I recommend using at least a 3660 motor. Any brand will work as long as you choose the kv correctly:)
Do you think it would have the same efficiency if I scaled it up? Nice Videos!
Hi, the efficiency would be most likely higher, but the problem would be with the sizes of the servo, motor mounting holes, bearings and other hardware. By how much would you like to scale it up?
@@mjetdevelopment I don't know yet
It is just a idea for a future projekt
I'm thinking 50mm or 60mm or 70mm.
Hallo, was für eine Combo ist den verbaut.Motor,Esc,Akku.
Danke
Das ist ein 3660 1700kv motor, Turnigy marine watercooled120A ESC, zwei 4s 2200mAh batteries in parallel. Ein Supergeschwindigkeitsturbomachine.
@@mjetdevelopment super vielen Dank, bin bald auch mit einem M-Jet unterwegs. DANKE für deine mega coolen Videos, sind echt viele Informationen
Oh just wondering could i buy the design and then 3d print it into a boat Hull or will i have to leave a hole in the hull for the jet?
How do you mean? For using the M-Jet 30, you need to have a hull, cut a hole into it according to the manual and glue the jet drive into it.
I also designed the M-Jet Sprint (see my channel) which has complete hull and the pump integrated
@@mjetdevelopment ok thanks one more question it the m-jet print with the hull have an improved design for the jet?
@@gwlith1578 The pump in the M-Jet Sprint is smaller than M-Jet 30 (27 vs 30mm) but it is heavily based on the M-Jet 30, there are no big differences. The M-Jet 30 is meant for bigger hulls (50cm) vs the M-Jet Sprint only has 39cm.
I would like to put that on my kayak
For a life-size kayak, this is unfortunately too small. If you are interested, you can check this bigger jet drive, a collaboration with my friend: th-cam.com/video/Nn_5Rk85wF0/w-d-xo.html It is still in progress.
Hello, I'm building a boat 36 inches long by 10 inches wide. I was wondering if I am installing 2 jets like this on my boat would this be correct and will I have enough power to move the boat forward quickly?
Hi, the power will be good. Just try to keep the weight as low as possible.
Štěpán Müller great thanks a lot
That RC boat was really pissed off and was ready to pick a fight. Probably due to the sound track 😁.
It was angry at prop driven boats XD
@@mjetdevelopment Lol, that would have been a easy win. Damn, this jet boat is smart too.
I am trying to make a boat out of a boat sandbox, do you think two of these would be able to power it?
It depends on the weight of your boat, if it is a smaller one, then probably yes, but it will still be very slow. For your particular application, one much bigger pump (like 60mm diameter) might be better. Good luck with your build!
Štěpán Müller Hi, I bought already your stl prototype but not ready yet to 3D print it. Is it possible also to buy your motor assembly for this model. I am a novice in RC model making and got inspired to jump in because of your work. Thank you.
@@ganyruperto7186 Thanks, glad to hear that! Unfortunately I cannot sell you any physical parts, you will need to buy everything yourself. For buying the motor, electronics and possibly some other parts, I can recommend you hobbyking.com, it is a reliable store.
Štěpán Müller thank you for your quick response. Appreciate it very much.
Can 2 of the M-Jet 30 have enough power for an electric surfboard?
Can this be adapted to gas? Have a Rosi inboard.
Could you please send me a link to this engine, its blueprints or tell me its dimensions? The most important parameter is how deep the engine block goes under the shaft.
This would be like jet rc plane, hit full throttle, it got out of radio range, and we'll
Joking but this is crazy quick
Haha yes. Luckily a shore would stop it
hi dude...is the propeller also 3d printed?
Yes. Its just PLA, holds the load with no problems.
Hi will this fit on my 1/8 scale boat ?
My boat in the video is 50cm. Optimum hull size is 45-60 cm. If yours is similar, then yes
I wonder what kind of speed I could get on a kayak before I burned out the motor? Maybe 2 motors mounted on rudder with lithium batteries remote mounted switch ......
I do not recommend this jet for a kayak, it is too small. Even two of them would still not produce enough thrust. For a bigger pump, check my M-Jet 60 video: th-cam.com/video/QfqbVi8Tezk/w-d-xo.html
i will try and print with SLA printer. ;) are there any links for parts that i have to order
The stores to buy from depend on your location. In europe, I use hobbyking.com a lot for the electronics. You might be able to get the screws in a local hobby store. And you will probably find the rest of the parts such as o-rings and bearings on amazon. Good luck with the SLA print, I would be interested to know if it works!
@@mjetdevelopment i am from slovenia so will be better hobby king
hi friend, I bought it but why when I want to download the file in your cgtrider is empty, and I can't download it, can you help me
I am very sorry for the complications, it should be fixed now.
That would push a kayak
How can I get this product in Bangladesh?
You can buy the files and 3D print your own unit. Files here: www.cgtrader.com/3d-print-models/hobby-diy/other/m-jet-3d-printable-jet-drive-for-rc-boats
Hey ..
What is your recommendation to print the M-Jet ? I already bought it. Will print with ABS at 240 degrees. 80 bed heat. What do you think? Infill 100%
Hi, print settings are on page 4 in the manual:
drive.google.com/open?id=10guq2Laz8EfP5fF6TGrs1q0CErPBnrqk
The temperatures are not written there but I use 255 nozzle and 100 bed for ABS, 215 nozzle 60 bed for PLA.
I recommend using PLA because of higher strength. The tolerances in the design are also meant for PLA. You can try ABS but you might have some problems with the stiffness of the impeller blades and tolerances in the nut slots etc. I definitely do not recommend printing with 100% infill, that makes the tolerances even worse. If you wish to use such a high infill, I would recommend dropping it at least to 90%.
@@mjetdevelopment can I do all pieces 100% ? for more resistance ? and with ABS 255 nozzle and 100 bed for ABS
@@darkspyful Yeah you can try it in ABS and 100% infill. But if it does not work and the pieces do not fit together correctly, try using the settings I recommended here and in the manual.
@@darkspyful Anyway, regarding the infill percentage, I recommend watching this video from CNC Kitchen: th-cam.com/video/AmEaNAwFSfI/w-d-xo.html
That is another reason why I do not use 100% infill for my parts.
@@mjetdevelopment Thank you. 100 bed temp only in the beginning?
my friend's son like boating, where can i buy M-jet 60 or 80 or 100 ???
Hi, links for the M-Jet 60 can be found in the description for the M-Jet 60 Announcement video. You can find more information about the M-Jet 60 on the "Pretty fast surfboards" channel.
Mrp in this product
How do you mean? If you need to know more information about the assembly and installation process, check the manual. Is that what you mean?
@@mjetdevelopment I'm purchase in this product by you tel me price
The price of the 3D model is 10$. You can purchase it here: www.cgtrader.com/3d-print-models/hobby-diy/other/m-jet-3d-printable-jet-drive-for-rc-boats
Then, of course, you will have to buy all things necessary to build the pump by yourself. List of the things you need is in the manual: drive.google.com/file/d/10guq2Laz8EfP5fF6TGrs1q0CErPBnrqk/view?usp=sharing
All internet links are in the description of this video.
@@mjetdevelopment delivered to india
I cannot sell you any physical parts. I only sell an STL 3D model (computer file), which you can 3D print on a 3D printer. You download the file and 3D print it.