Electric Surf Board

Boats, Jet Skis, Kayaks etc., including hovercrafts
dirkdiggler
10 kW
10 kW
Posts: 730
Joined: Oct 18, 2012 1:31 am

Re: Electric Surf Board

Post by dirkdiggler » Oct 12, 2017 3:14 pm

Toto:
Link to their facebook page with the pictures.
https://www.facebook.com/OneanBoards

keller
1 µW
1 µW
Posts: 2
Joined: Sep 22, 2017 6:19 pm

Re: Electric Surf Board

Post by keller » Oct 16, 2017 9:19 pm

The board shown in the Utah videos is the petrol model which is going to retail ~$9K.

madmarz
1 µW
1 µW
Posts: 1
Joined: Nov 09, 2017 4:40 am

Re: Electric Surf Board

Post by madmarz » Nov 09, 2017 5:11 am

Hello Gentlemen & any ladies out there,
I'am in the process of yes, you guessed it, like the rest of you, building an electric surfboard. I have a couple of old windsurfers here (pretty cheap second hand in Western Australia) and want to make something like Mathias has done with the prop job on the back.

It won't be used in the ocean its just for some fun on the dams and lake when the surf is flat in summer, the following is a list of things i have on the way. I already have a SSS56104 KV500 motor and this is what I have coming
Brushless Outrunner Motor MTO8085-250-G KV: 250, MTSF300A-OPTO with water-proof and cooling aluminum case
Cont. Current: 300A, Burst Current:1000A, BEC: NONE and Radio control and receiver for e-skate MTSKR1712 Radio control and receiver for e-skate board.

I would like to use the 48volt battery pack of my e-bike and am wondering can I just use direct drive to a big prop like Mathias used on his build or do I have to use a gearbox on it like Mathias used. Im pretty useless at electronics stuff, but good at breaking and fixing things mechanical with my hands.

Any help would be greatly appreciated,
Marz
And its actually 6:10pm in West Oz at the moment not 8:10pm as the post says

srn
1 mW
1 mW
Posts: 19
Joined: Sep 21, 2017 8:50 am

Re: Electric Surf Board

Post by srn » Nov 11, 2017 10:53 am

I think you will buy everything twice.

the chinese motor has 116A max. This is not much.

User avatar
amberwolf
100 GW
100 GW
Posts: 23943
Joined: Aug 17, 2009 6:43 am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group
Contact:

Re: Electric Surf Board

Post by amberwolf » Nov 13, 2017 12:47 am

madmarz wrote:And its actually 6:10pm in West Oz at the moment not 8:10pm as the post says
On my screen, your post says it was posted at 3:11am. ;)

The forum displays everything based on the time zone you pick in the User Control Panel.

Jetfreak
1 µW
1 µW
Posts: 4
Joined: Jun 22, 2017 4:15 pm

Re: Electric Surf Board

Post by Jetfreak » Nov 18, 2017 3:52 pm

Hey,

i bought 2 Lampuga air and wann sell one.. 6400€ with 2 Bodys, Controller, Charger and stuff...

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Nov 23, 2017 11:08 am

hi guys. if anyones interested, here are some progress pics.
Attachments
1.jpg
2.jpg
3.jpg
4.jpg

srn
1 mW
1 mW
Posts: 19
Joined: Sep 21, 2017 8:50 am

Re: Electric Surf Board

Post by srn » Nov 25, 2017 12:44 pm

looks well made.

how did you make the sealing/bearing at impeller shaft ?

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Nov 26, 2017 3:31 pm

i bought some of these https://uk.rs-online.com/web/p/seals-o-rings/2118816/
they seal the shaft outside the output bearing

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 01, 2017 10:58 pm

chris_kline wrote:
Nov 23, 2017 11:08 am
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?

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 03, 2017 11:39 am

Hi Ropower

thanks for the complements. that was my first bit of tig welding in a couple years, but i guess its like riding a bike.

well the design work took i suppose about 6 hours in total, from 3d model to laser cuts and mould design etc. then the jet drive took about a day to assemble everything.

the prop mould i made from aluminium on a 3 axis cnc mill, then injection resin carbon fiber process.

in total ive probably spent about 4 days actually working on it, but its been around 6 weeks of waiting for parts and materials to arrive.

will post some more progress pics soon of the board. and ill do a little video of the build process plus first rides when its done. also if anyones interested ill post all the models and designs so if someone else wants to use them for their own projects, i think at least its a good start point reference

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 03, 2017 11:41 am

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

Frizzo
1 mW
1 mW
Posts: 16
Joined: Nov 27, 2016 6:07 am

Re: Electric Surf Board

Post by Frizzo » Dec 03, 2017 4:32 pm

Did you use raw carbon fiber? Would it be possible to get a video or a good explanation (maybe a tutorial :D ) for the prop realisation? :)

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 03, 2017 6:18 pm

hey frizzo

sure, i was thinking to start a new thread with the complete build, and a kinda tutorial vid for the whole thing, with drawings etc

the prop was made using dry carbon fabric, the carbon was placed between an aluminium split mould, then injected with epoxy resin. this is like the process that mclaren use for their monocoque chassis. except i injected the resin with a syringe instead of a big expensive injection machine

the fins im currently making using pre preg carbon in an autoclave, but you could just use a resin laminating method instead. ill post some pics tomorrow.

the actual board is eps foam, and i will use a wet lay laminating method something like how traditional custom surf boards are made.

the board blank was finished tonight. im getting a little excited now, its starting to come together!

srn
1 mW
1 mW
Posts: 19
Joined: Sep 21, 2017 8:50 am

Re: Electric Surf Board

Post by srn » Dec 04, 2017 5:47 am

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 attached.

I sandpapered it a lot and now it is a useful carbon propeller.
Attachments
IMG_0641.jpg

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 6:57 am

chris_kline wrote:
Dec 03, 2017 11:41 am
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 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 had the welds coming out like a roll of gold coins. But that was 13 years in the field but I opt out because I now have bad eyesight.

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 6:59 am

srn wrote:
Dec 04, 2017 5:47 am
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 attached.

I sandpapered it a lot and now it is a useful carbon propeller.
Can you show the 2 negative CNC impeller mould?

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 04, 2017 1:22 pm

ropower86 wrote:
Dec 04, 2017 6:57 am
chris_kline wrote:
Dec 03, 2017 11:41 am
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 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 had the welds coming out like a roll of gold coins. But that was 13 years in the field but I opt out because I now have bad eyesight.
cheers. i dont have engineering background with watercraft. but i do have 20 years in automotive design manufacturing.

do you have some pics of some of your old welding projects? would be cool to see those perfect welds!

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 04, 2017 1:25 pm

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!
Attachments
z mould part 2.jpg
(123.25 KiB) Not downloaded yet
Untitled-2.jpg
(110.11 KiB) Not downloaded yet
IMG_0022.jpg

chris_kline
10 mW
10 mW
Posts: 24
Joined: Sep 20, 2017 9:51 am

Re: Electric Surf Board

Post by chris_kline » Dec 04, 2017 1:27 pm

srn wrote:
Dec 04, 2017 5:47 am
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 attached.

I sandpapered it a lot and now it is a useful carbon propeller.
looking good!

srn
1 mW
1 mW
Posts: 19
Joined: Sep 21, 2017 8:50 am

Re: Electric Surf Board

Post by srn » Dec 04, 2017 3:31 pm

here my mould out of PE.
Attachments
prop_mould.jpg
prop_mould.jpg (92.41 KiB) Viewed 166 times

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 7:18 pm

srn wrote:
Dec 04, 2017 3:31 pm
here my mould out of PE.
How many impellers have you made out of the PE's negative mold?

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 7:18 pm

chris_kline wrote:
Dec 04, 2017 1:22 pm
ropower86 wrote:
Dec 04, 2017 6:57 am
chris_kline wrote:
Dec 03, 2017 11:41 am
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 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 had the welds coming out like a roll of gold coins. But that was 13 years in the field but I opt out because I now have bad eyesight.
cheers. i dont have engineering background with watercraft. but i do have 20 years in automotive design manufacturing.

do you have some pics of some of your old welding projects? would be cool to see those perfect welds!

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 7:20 pm

chris_kline wrote:
Dec 04, 2017 1:25 pm
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 mad skills.

ropower86
1 W
1 W
Posts: 52
Joined: Dec 05, 2016 7:50 pm

Re: Electric Surf Board

Post by ropower86 » Dec 04, 2017 7:21 pm

ropower86 wrote:
Dec 04, 2017 7:18 pm
chris_kline wrote:
Dec 04, 2017 1:22 pm
ropower86 wrote:
Dec 04, 2017 6:57 am
chris_kline wrote:
Dec 03, 2017 11:41 am
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 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 had the welds coming out like a roll of gold coins. But that was 13 years in the field but I opt out because I now have bad eyesight.
cheers. i dont have engineering background with watercraft. but i do have 20 years in automotive design manufacturing.

do you have some pics of some of your old welding projects? would be cool to see those perfect welds!

Post Reply