Search found 27 matches

by toto44
Apr 04, 2018 10:00 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Printed everything, nearly ready for first testrun.
IMG_1169.JPG
IMG_1169.JPG (91.31 KiB) Viewed 373 times
IMG_1168.JPG
IMG_1168.JPG (94.53 KiB) Viewed 373 times
by toto44
Mar 21, 2018 7:52 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

60mm
by toto44
Mar 20, 2018 1:55 pm
Forum: Electric Watercraft
Topic: Cracker Box for my daughter
Replies: 6
Views: 805

Re: Cracker Box for my daughter

Some progress
by toto44
Mar 20, 2018 6:48 am
Forum: Electric Watercraft
Topic: Cracker Box for my daughter
Replies: 6
Views: 805

Re: Cracker Box for my daughter

Finally some progress.
Started building the fuselage. Also re-designed the jetdrive. Anybody here who has build wooden boats before? I am not sure if I should use epoxy or polyester to glass the wood.
by toto44
Mar 19, 2018 9:12 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Hello,

I created completely new jet. It will be availible soon for download, after I printed and testrun it. Here are some pictures. I improved bearings, added grease nipples, better waterflow..........
by toto44
Oct 12, 2017 1:07 pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Do you have Link to These pictures?
by toto44
Aug 19, 2017 9:55 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

I am using Eppler 214 for the Wing. For stabilisier it will be naca 009. I had the idea to use a only Wing setup. Do. such foils exist?
by toto44
Aug 18, 2017 3:17 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

As I am still in work of setting up my new workshop, my progress with the foil is slow. Here are some screenshots of the wing I designed. Will print it next week.

Congratulations to all who flew already with their creation.
wing1.jpg
wing2.jpg
(215.7 KiB) Downloaded 22 times
by toto44
Jul 25, 2017 3:57 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

The pushing force is not bad, but it will not create speed. You can already see from the pitch of the prop.
by toto44
Jul 20, 2017 8:29 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

I found this picture

http://de.boats.com/bootstests/torqeedo ... em-wasser/

scroll down a little bit.
by toto44
Jul 20, 2017 4:07 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

Hello notafraidtotry, yesterday I started assembly of the jet, just waiting for some sealings. Concerning the wing, how are you planning to use the printed parts? Cover them with carbon, or use them for making molds? Maybe I start printing them too, but it should make sense to add some grooves to pl...
by toto44
Jul 20, 2017 1:42 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

by toto44
Jul 19, 2017 9:43 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

I already designed another version, but as the first one is printed, I am going to test this one first.
jet3.jpg
(159.67 KiB) Downloaded 4 times
by toto44
Jul 19, 2017 8:42 am
Forum: Electric Watercraft
Topic: Electric Hydrofoil/E-Foil
Replies: 463
Views: 33623

Re: Electric Hydrofoil/E-Foil

Hello, I am the designer of the waterjet from Cults. As I am working on the foil too, I designed a special jet for it.Here are 2 pics. I printed all parts, and received the motor (5692/ 540KV) it should run on 12s battery, and can be fittet to the fin / mast. jet1.jpg jet2.jpg To Notafraidtotry: do ...
by toto44
Sep 20, 2016 9:24 am
Forum: Electric Watercraft
Topic: Cracker Box for my daughter
Replies: 6
Views: 805

Cracker Box for my daughter

As the electric surfbord will not get further, as I can not find a cheap surfboard, I decided to build a small boat for my daughter, using my jetdrive unit. This has been run in a model boat now for a while, and seems to perform nice. I ordered some telemtrie stuff, to check amperes during driving. ...
by toto44
Aug 29, 2016 3:11 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Hello Sebastien,

nice work on your underwater wings! Maybe we can develope something together? Do you have any drawings or 3d of the fuse, so I can try to incorporate my jet drive into it?

Have a nice day

Toto
by toto44
Jul 26, 2016 9:33 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

I reworked the jet. The main housing is one part now and printer friendly. The diffusor and nozzle are one part now, and I added a steering nozzle. All this is currently build into a large model boat fuselage, to testrun it. If the results are good, I will start cuttung my surfboard:-)
by toto44
Jun 23, 2016 8:12 am
Forum: Electric Aircraft
Topic: Manned electric "quadracopter" takes flight!
Replies: 40
Views: 9796

Re: Volocopter

why should it be able to autorotate??? Even if 3 motors fail, it will still fly.
by toto44
Jun 23, 2016 8:10 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Maybe you are talking about the fullsize impellers?
These smaller unit need higher rpm.
Check the ones availible:

http://www.mhz-powerboats.com/Jet/Jet-Power-924.html

Toto
by toto44
Jun 13, 2016 2:07 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Hello, basically, the higher the rpm the better. Motor KV depends on how much voltage you battery has. Right now I am using a 4074 innerrunner. Expected prop speed is around 18.000/min. It will be in the 2500 Watts area. I do not know if the printed prop will be able to transfer that amount of power...
by toto44
Jun 07, 2016 9:37 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

These parts are for sale

Alltogether 55€
by toto44
Jun 07, 2016 5:03 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

http://www.rc-raceboats.de/forum/showth ... Jetantrieb

I have some parts for sale.

Pics of the new unit soon.
by toto44
Apr 24, 2016 1:39 pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

Thanks,

meanwhile I reworked the pump, and will do some testing. Also I am trying to get a used surfboard.

I will post pictures soon.
by toto44
Dec 22, 2015 5:47 pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

The impeller has 60 mm diameter.
by toto44
Dec 22, 2015 4:15 am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 575
Views: 116382

Re: Electric Surf Board

After 26 hours of printing my first Jet is ready.