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mcfeecaiden 2024-07-22 23:06:08 UTCmcfeecaiden
Is the M-Jet 30 compatible with the M-Jet Supersprint?
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M-Jet 30 - 3D Printable Jet Drive for RC Boats 3D print model
Description
Join the official M-Jet facebook group! https://www.facebook.com/groups/623045356071128
Full documentation, manual, part list, drawings: https://drive.google.com/drive/folders/1JcEGcyh6E7lrhXk4kT1SKNdzvIaI_VNe?usp=drive_link
Hardware and electronics kit by RCPrinter: https://rcprinter.com/products/m-jet-30-pump-build-kits
Note: This is not a physical product. After purchase, you can download computer files which you can use to manufacture your own parts on a 3D printer.
M-Jet 30 includes:
STL files for all parts of the assembly, designed to be FDM 3D printed, mostly with no supports.
STEP file for most of the assembly except for the pump (the pump is only included in the STL format).
You can 3D print it and assemble it with help of the manual, link above. You need to buy all electronics, screws and other necessary parts yourself - part list is in the manual, too.
The M-Jet 30 is a 3D printable jet pump for RC jetboats. It is a good match for hulls of size 35-55cm. The newest version of the M-Jet 30 introduces all key M-Jet features:
2-stage configuration
Single blade impeller
4-path nozzle with a quick-swap vertical trim
Rear installation
The M-Jet 30 is compatible with the following hulls:
Ragnarok: https://www.cgtrader.com/free-3d-print-models/hobby-diy/other/ragnarok-3d-printable-rc-jetsprint-boat
Valkyrie: https://www.cgtrader.com/free-3d-print-models/hobby-diy/other/valkyrie-3d-printable-rc-jetski
The M-Jet 30 has the same internal pump geometry as the Supersprint and utilizes most of the same hardware and electronics.
You don't need the M-Jet 30 to build the Supersprint, and you don't need the Supersprint to build the M-Jet 30. These are separate systems.
Performance: The M-Jet 30 achieves 5.3kg static thrust at 18.5m/s exit velocity, consuming 1315W from battery. This data comes from a static thrust test.
Update log: till Septemer 2024 old M-Jet 30, since September 2024 new M-Jet 30.
Update 10. 5. 2020: Two parts of the steering assembly, Ball and Servo coupler, were changed for better strength and grip on the steering shaft.
Update 4.11.2020: These parts have been further reinforced.
Update 18.1.2021: The M-Jet was renamed to M-Jet 30.
Update 14.9.2021: A new folder Mods_for_M-Jet_30 was added to the files, including a single blade impeller design mod. It requires more testing on this pump, but was found to dramatically improve efficiency on a different pump.
Update 13.11.2022: The model description was slightly updated.
Update 18.1.2023: STL file for a single stage impeller (to make the pump work without first stage) was added into the mods folder. Steering shaft will not work properly and the impeller hub does not have the correct size, but it can be an interesting experiment for you to test.
Update 3.6.2023: STEP file of the whole pump was added with the M-Jet_30_STEP_file folder.
Update 11.05.2024: Modified parts (housing, ball and servo_coupler) that use threaded inserts instead of inserted M3 nuts were added into the M-Jet 30 folder. Threaded inserts are a preferred option instead of the older nut solution. Thanks to rc3dprinter for suggesting this modification.
Update 05.09.2024: Brand new M-Jet 30 has been released, introducing all important M-Jet features developed over time. The new M-Jet 30 replaces the original M-Jet 30. The original M-Jet 30 stays available as old_M-Jet_30.
Fix 06.09.2024: Due to some issues, the M-Jet 30 has been reuploaded.
Fix 11.09.2024: Wrong dimension of the steering shaft (112mm) has been corrected to 110mm in the manual.
Fix 05.10.2024: Based on a report, KV selection for 28xx motors was designed too high and could lead to damaging the motor. Recommended KV for 28xx motors was reduced in the manual. No other changes.
Update 16.11.2024: A motor mount with ESC holder for Bash Jet or other boats where this configuration is useful, was added to the mods folder. Thanks Bart for creating and sharing the design!
Update 30.11.2024: A new version of the ESC mount for a Hobbywing 150A forthe Valkyrie by Bart was added into the mods folder, thank you for your work.
M-Jet-Development
No, Supersprint has its own pump included, which is in fact more advanced than the M-Jet 30. No need to buy any pump separately if you buy the Supersprint.
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rc3dprinter 2024-06-02 16:26:17 UTCrc3dprinter
I found that on my printer the 2 places where you attach the cooling tube to the housing are very weak because they are only 2 walls thick. I think if the design was changed to use 3x4mm brass pipe it would be stronger.
M-Jet-Development
Yes, the stronger 3x4 brass pipe design is what I used in all newer models since M-Jet 35. If you have some basic CAD skills, you can try modifying the STEP file to adapt the brass pipes. Otherwise I can do it for you no problem.
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rc3dprinter 2024-06-02 21:40:42 UTCrc3dprinter
Thank you though I already had the pump glued into the boat when it broke so I drilled out a hole for the pipe and glued it in.
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rc3dprinter 2024-05-11 18:21:16 UTCrc3dprinter
Thank you a lot for doing this it is nice to see that you update your designs and are very helpful.
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rc3dprinter 2024-05-11 15:24:23 UTCrc3dprinter
I have been struggling to get the m3 slot nuts to fit properly into the housing. They aren't able to go in far enough to line up with the screw holes, this causes them to either not work or cross thread the screws. I have tried changing several different print settings and I have not been successful in making them fit. I am wondering if you have any suggestions on how to print the housing so the slot nuts fit or if you would make a housing that uses m3 threaded brass heat inserts instead of slot nuts.
M-Jet-Development
This is a very good suggestion with a simple solution. I have just uploaded modified files for the housing, ball and servo coupler that use M3x5.7 threaded inserts instead of inserted M3 nuts. You can find those files in the newest M-Jet 30 folder (click your profile picture and "purchases" to download the update). Thank you for the tip.
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chenchin261183 2024-02-06 10:23:13 UTCchenchin261183
Good morning, is this model compatible with the Valkyrie jet ski?
M-Jet-Development
No, the Valkyrie is only compatible with the M-Jet 35.
But you can use the M-Jet 30 with Ragnarok:
https://www.cgtrader.com/free-3d-print-models/hobby-diy/other/ragnarok-3d-printable-rc-jetsprint-boat
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rc3dprinter rc3dprinter
Great pump, powerful and well designed. Nice to see the frequent updates.
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simplesailor simplesailor
A very nicely designed model.
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graydawn graydawn
Excellent files, no problem with printing, cannot wait to get the drive built and running.
HolyRC
I hope there will be an update for bucket reverse.
B
bulentdulgeroglu bulentdulgeroglu
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M-Jet 30 - 3D Printable Jet Drive for RC Boats
Editorial No Ai License
M-Jet 30 - 3D Printable Jet Drive for RC Boats
Editorial No Ai License
3D Model formats
Format limitations
- PDF (.pdf) (2 files)33.4 MB
- Stereolithography (.stl) (3 files)34.9 MB
- DXF (.dxf)24.7 MB
3D Model details
- Publish date2020-04-17
- Model ID#2368560
- Ready for 3D Printing
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