3D printed Jet boat V2

By Jotham B

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3D printed Jet boat V2

Latest version here: http://www.simply3d.co.nz/kwikjet *semi final update:* Version 3 is now out still untested - there for those who are keen: The only changes are a new hull shape. All version 2 and 3 parts are compatible. I'm working on a new version yet again. Next version will be 600mm long with 35mm pump. https://www.youmagine.com/designs/version-3-3d-printed-jetsprint-jet-boat https://www.youtube.com/watch?v=LjcFiSG5YQ4 running on 12volts (3S) https://www.youtube.com/watch?v=EjYarSz_9GE Running on 24v (6S) https://youtu.be/yRmGHExMy40?t=15s Too fast! I look forward to trying it out on a smooth lake one day. Forum thread: https://www.rcgroups.com/forums/showthread.php?3061106 Version 1: https://www.youmagine.com/designs/prototype-jetsprint-jet-boat Version 2: (you are here) Version 3: https://www.youmagine.com/designs/version-3-3d-printed-jetsprint-jet-boat Specs: - Impeller: 29mm diameter, 29mm pitch - Exit nozzle diameter: 22mm - Hull length: 460mm - Hull width: ~185mm - 9g servo for steering (can use larger servos when adapter plate used) - Weight of printed parts: 550g (PLA), 460g (ABS) Power system: As you can see in the video, the power system I used was completely over powered. The boat does appear to handle better when it is lighter and a smaller motor would help reduce the weight. Parts used are as follows: - 3674 brushless inrunner motor @1900KV. 61A max. Max power 1800w. - 2x 2200mAh batteries, 25C. - 120A watercooled ESC Improvements in this version: - Deeper v - skips over the waves less - 30mm longer and 20mm wider - Better sealing lid with only 2 screws for easy/quick opening. Ideas to improve for the (maybe) next version: - Add printed ducts inside of the hull. Then have it use the venturi effect to suck any water out of the bottom of the boat this way the boat would pump out any water that got in when the pump is running - Thats about it. I'm pretty happy with it as it is. Suggestions for improvements are welcome :-) UPDATE: I've now added a bash plate to the nozzle. The new file is called "nozzle & bashplate.stl" and can be found in the download.
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