some impressions from my first build in winter 2022, not yet ready.
- Takuma BK900 100l SUP foil board from Decathlon (not optimal, see text below)
- Flipsky FSESC 75200
- Gong Kite Foil Allvator Rise Alu M
- FeRo remote
- Flipsky 65161 120kv
- 14S8P Molicel INR21700-P42A 4000mAh (2x 7S8P)
After reading a lot in this forum I decided to build this winter holidays my efoil.
So, first thanks for this great input!
For this I bought in autumn nearly all components to be prepared.
For board I decided to buy a Takuma 100l SUP foil board because I liked it´s shape compared to windsurfboards, that have a more spiky front. Also it´s thickness of ~15cm was fine.
Disadvantage: the top is not even, it has a Takuma called “Das eingelassene „G Deck“” which everything made more difficult.
Brand new board:
First I started with the mastclamp. Water for cooling the ESC enters in the front and enters the mast on the side. As the Gong mast has 2 seperated chambers inside, one is for the water the other for the 3 motor wires:
After some hesitation, let it snow:
Next time I would prefere to saw out the complete block and to glass the underside new.
Much easier and less dirt
Next was building the technicbox out of 9mm Siebdruckplatte. Because I was unsure if I get the box watertight, I decided to put the electronic components in IP67 plastic boxes.
Two for the battery (2x 7S8P, connected in series to 14S8P), one for ESC and receiver.
Now the epoxy to glue the box in and to reinforce the structure :
Before paintjob some leackage testing:
(it was very cold in Germany and outdoor water-tap turned off)
Tight → paint it black:
And the electronics:
To have an additional sealing under the board for the motorcable and watercooling entry I decided to pour a sealing with Wagnersil N32. Form was 3D printed.
I don´t know if it really necessary, but better to have then to need…
- finish some electronic things (receiver, anti-spark)
- build battery packs
- license number