Search found 105 matches

by chris_kline
Mar 21 2020 3:31am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Mar 20 2020 5:17pm
Cool video 😃 really nice and your location too.
Actually I am building up a lot of things for the Jetsurf...new plates for a binding, a hydraulic throttle....
hydraulic throttle, sounds cool, what components are you using? might have to add that
by chris_kline
Mar 18 2020 7:28am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

if anyones interested in a build video, https://www.youtube.com/watch?v=p6V4zLt6Xys
by chris_kline
Jan 11 2020 7:51am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Jan 10 2020 6:49am
Hi Chris

Has always been the battery, the length of the cables,...
At the moment I have to additional banks and it is working.

By the way, I have bought a Jetsurf ;-)

Cheers Fabian
awesome. which model did you get? new or second hand? how is it to ride?
by chris_kline
Jan 08 2020 3:31pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

look at that giant external caps bank on the mgm esc. when my caps kept blowing, mgm were telling me "its your batteries, its your motor, its everything except the ESC", and charging me stupid amounts of money to repair and replace. turns out lampuga also had problems with the caps exploding. hence ...
by chris_kline
Nov 06 2019 4:57am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Nov 06 2019 1:39am
chris_kline wrote:
Nov 04 2019 7:57am
fabianpusch wrote:
Nov 01 2019 6:01am
Hi Chris
Any news?
Did you already sent an email?
Cheers Fabian
hi fabian.
sorry mate, ive been real busy with work etc the last week.
ill see if i can get it to you by tomorrow
Sorry for writing an additional message 😜
drawings sent
by chris_kline
Nov 04 2019 7:57am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Nov 01 2019 6:01am
Hi Chris
Any news?
Did you already sent an email?
Cheers Fabian
hi fabian.
sorry mate, ive been real busy with work etc the last week.
ill see if i can get it to you by tomorrow
by chris_kline
Oct 25 2019 10:46am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

no probs.
what format is good for you?
ill find the drawings and compile them together for you over the weekend
by chris_kline
Oct 25 2019 6:01am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

I am trying to build up a pump. The problem is the CFD actually...I am not sure where to start. Second, I have already tried to print one in metal. Big fail because of the supports, needed to build up the impeller. Which diameter are you using? What are the main specs? Maybe it is possible to give ...
by chris_kline
Oct 23 2019 2:26pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Oct 23 2019 1:28pm
Once again, big congrats from my side.
Good job, nice ride, cool video and a nice spot.
I would like to talk to you about your jetpump.
If it would be ok for you :D
thanks fabian.
feels good to finally have a working board.
sure, what would you like to know?
by chris_kline
Oct 23 2019 9:52am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

hi guys
i made a full video, jetsurfing at the beach.
https://www.youtube.com/watch?v=hpW3-ppHwgc&t=2s
by chris_kline
Oct 20 2019 12:43pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

srn wrote:
Oct 20 2019 5:56am
I have a 3D printed steel impeller. Ordered it at i.materialise.com
There you can upload your file and instantly get a price.

The print quality is impressive
great thanks, i will try them.
by chris_kline
Oct 19 2019 2:28am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

i can cnc the crank case, but the cylinder/block has exhaust/transfer ports that can only be achieved with either wax loss casting, or dmls. i got some parts quoted dmls a few years ago for my company, was cheaper back then to wax loss cast, but both were extremely expensive. i was wondering if the ...
by chris_kline
Oct 18 2019 1:48pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

That sounds cool, I am trying to animate a PhD in fluid technical systems and my old connections to Formula1. I think building up a jet is not impossible. The hardest thing is spending money for the itereations and the prototypes. By the way, we have multi jet HP printer and also some DMLS metal pr...
by chris_kline
Oct 05 2019 9:38am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

lehner 7050 with 5 windings

76mm prop with 70mm pitch, 52mm nozzle
by chris_kline
Oct 05 2019 7:20am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

yeah 2 thousand euros is a little on the pricey side
by chris_kline
Oct 05 2019 7:19am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

i was running 20 degrees, and the fets were getting close to max temp, then i increased to 25 degrees, and the fets were cooler by about 8 degrees.
im running cooling from the jet drive, but it pumps a lot of water through the system through 10 mm diameter hose
fets are stable around 60 degress c
by chris_kline
Oct 05 2019 6:43am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

yeah, check the waterflow, the fets on mine never get hot, also what motor timing are you using? more degrees timing keeps the fets cooler, but gets the battery and motor a little hotter.
how much did that battery cost, looks like the proper shiz
by chris_kline
Oct 05 2019 6:10am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

Hi Chris, No it is a 14S1P configuration. The cells are KOKAM cells, each cell 53Ah. The caps are okay, the internal temperature of the MGM says to hot...and then the power is automatically reduced. How did you solve the cooling of the capacitors, sounds really interesting to me. i have watercoolin...
by chris_kline
Oct 05 2019 4:38am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

so you were running a 17p battery? assuming your cells were 3000mah?
by chris_kline
Oct 05 2019 4:37am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

what part of your mgm was getting hot? the fets or the caps? i was having problems with my caps, so i put a huge capacitor bank with watercooling on them and that seemed to solve it. in the end i was having problems with my batteries getting hot, especially if i full throttle to 54 kmph, and some of...
by chris_kline
Oct 05 2019 4:12am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

fabianpusch wrote:
Oct 05 2019 1:05am
https://youtu.be/hzqdDyQC6nw

Greetings from Corsica.

Your petrol powered board is amazing....really fast. Great job...and a perfect lake with best conditions. Where is it?
that looks awesome, really smooth!
how much run time do you get per charge? what size battery were you using?
by chris_kline
Oct 03 2019 6:22am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

hit 75 kmph yesterday!
heres a video doing not quite full speed around 65kmph
https://youtu.be/BENxS1iLGjk
by chris_kline
Aug 28 2019 2:57pm
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

Hello, I am from Germany and Reparing old Lampuga Air and Boost, if you have problems or questions just contact me :wink: also building a electric surfboard myself with tp power 100/105 and vesc 75/300. hi florian thats cool. would you be willing to post some photos of the lampuga boards internals,...
by chris_kline
Aug 11 2019 10:10am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

heres a photo of my hatch, aluminium flange, with a rubber gasket, and thumb nuts for fastening it down
by chris_kline
Aug 09 2019 10:51am
Forum: Electric Watercraft
Topic: Electric Surf Board
Replies: 756
Views: 192543

Re: Electric Surf Board

ill post a photo tomorrow of what i did with my hatches. basically i just had a rubber gasket cut for me by a company who cnc cuts gaskets for plumbing and oil industry etc 60mm pitch is a little low, especially for a 60mm diameter prop, you would need to get that nozzle pretty small to create enoug...