Endless Sphere

Where are you standing now with your project?

Here it is fabianpusch

I see we all went ghost on this post . It seems like we all figured it all out. I will be testing soon, in the fiberglassing stage then Gel coat. I will be making a mold and start producing DIY jetboards if things go well with my new design.

srn wrote: ↑

Aug 30 2018 3:37am

Hello,

i changed my carbon impeller to a 3D-printed steel impeller. It is really impressive quality and less vibration.
IMG_3664.jpg

today I will make first measurements of power consumption. Will provide results later.

How much did it cost you to 3d print in metal?

All my photos are massive in size so I had to reduce it multiple time just to get it under 512kb.

Frizzo wrote: ↑

Dec 12 2017 3:38pm

to attach an image go here:

Screenshot from 2017-12-12 21-35-22.png

then, click on place inline

Are you kidding me!?!?!?! All this time I was struggling to add pictures for the longest since Ive been on here. I had never paid attention to the bottom.

When do you actually upload the video at full trottle, ropo? I´ll be very interested to see what is possible to take out from your motor. Also, I wrote to MHZ and ansked how much torque the Scorpion HK-7455-320KV has.... It has a 7,2 Nm Torque. Here is the data table of my Lehner 3060/9 Lasttabelle...

When do you actually upload the video at full trottle, ropo? I´ll be very interested to see what is possible to take out from your motor. Also, I wrote to MHZ and ansked how much torque the Scorpion HK-7455-320KV has.... It has a 7,2 Nm Torque. Here is the data table of my Lehner 3060/9 Lasttabelle...

About the 3d print impeller, Yes it does hold up pretty well in the water even with tremendous loud. The impeller has to be printed at 100% infill, in 0.1mm or 0.2mm and set as a high quality which takes longer. Yes, it was in PLA.

I used PE because Epoxid Resin should not stick to it. But because of a too rough surface, it is sticking like hell .. For my second Impeller, I applied normal candle wax on the surface. This worked very well. You should use pva film that is used in mold release to make it a whole lot easier for yo...

Hey ropo, here is a tutorial for designing a propeller in inventor: https://www.youtube.com/watch?v=-iVDzhGvre4 for the cast, just do a boolean difference between the propeller and a block of the right size. then you could also 3d print or cnc machine the mould. If you 3d print it, then use ABS so ...

Wow, you are flying and putting this together pretty fast! Do you have some engineering background in the watercraft field or some sort? It had taking me a verrrrrrryyyy long time to put a jet drive together. :lol: About your tig job you did pretty good, I use to be a top-flight in tig welding, I h...

oh the prop ended up being 79mm diameter with 70mm pitch. the reason was thats what the stainless tube was available in for the main chassis of the jet drive Wow, you are flying and putting this together pretty fast! Do you have some engineering background in the watercraft field or some sort? It h...

right now im not at the location with my prop mould. but heres the 3d model of it. and fresh out of the oven, a carbon fin! Pure Beauty in front of my eyes from the screen!!! I wish I can have your skills right now.... Do you share files? I have Autodesk too. I am almost jealous right now of your m...

oh the prop ended up being 79mm diameter with 70mm pitch. the reason was thats what the stainless tube was available in for the main chassis of the jet drive Wow, you are flying and putting this together pretty fast! Do you have some engineering background in the watercraft field or some sort? It h...

srn wrote: ↑

Dec 04 2017 3:31pm

here my mould out of PE.

How many impellers have you made out of the PE's negative mold?

I made my impeller very similar. Produced two negative forms with CNC mill, then applied epoxid resin and small pieces of carbon fiber until i had approx. 5 - 10 layers everywhere. With weights i pressed both forms together with the propeller in the middle. At the end I got the impeller as shown at...

oh the prop ended up being 79mm diameter with 70mm pitch. the reason was thats what the stainless tube was available in for the main chassis of the jet drive Wow, you are flying and putting this together pretty fast! Do you have some engineering background in the watercraft field or some sort? It h...

chris_kline wrote: ↑

Nov 23 2017 11:08am

hi guys. if anyones interested, here are some progress pics.

I like your tigging work, Im a tig welder myself too. What size impeller and did you made it with a 5 axis CNC? How long did it take you to put that masterpiece together?

Saw some updated info about Onean on their Facebook page. I'm sure the info is somewhere in this thread already. I'll repost for my own. Their Carver board uses 48v batteries at 20ah. https://scontent.fsnc1-1.fna.fbcdn.net/v/t1.0-9/20229116_670952183093820_5437740488408359471_n.png?oh=afe0e8e250398...

Here' my jet-board, I will post another video of it going faster soon. https://www.youtube.com/watch?v=lz2sp_sXylg Hello, I saw in your youtube comment, that you spend approx. 30.000$ for this project ? It surprises me because you use basic components. Which major problems/cost drivers did you had ...

Here' my jet-board, I will post another video of it going faster soon.

https://www.youtube.com/watch?v=lz2sp_sXylg

I completely forgot I even had posted this topic. But I still use these batteries to this day. I actually sold 2x of the packs to someone here in ES so I discharge at 20s 8ah 80 cells I don't know why I sold two of them but its been over a year now. I think its because I was using a EBIKE ev global...