Efoil V4 - Gong foil veloce XXL / trampa VESC 6 MK5 / flipsky remote and motor / flite prop / samsung 35E 12S12P

[jeffM]

Hi the Efoil community,
I start a new thread to present my new project.
The goal of this new Efoil is the same spirit as my V3, focused on low consumption and autonomy ( 1h30 / 2h). But more compact and easy to disasemble.
the Board construction : 125* 58 * 10

I tested the layout for 12S12P, all is fine

Ant smart bms, thickness 16.5mm

The power connector and RF connector, it’s not finished I need to reinforce and install the waterproof seal

[jeffM]

the mast with melted alu box for the Trampa VESC 6 mk5

here the alu box with Flipsky VESC6 but now I changed for Trampa MK5

I cut the mast to 72 vs 80 (just to fit in my Ford ranger )

With the Trampa

Usplit 0V.11 + Flipsky receiver + trampa nrf wireless dongle for the setting

[cim96dm7]

Seems like a quite possible success project as long as you route the antenna all the way forward on that smal board. Please report back if you see wateringress on your mastfoot pod as this is an attractive solution for passive cooling for the masses.

I hope that you have surfing experience since you have chosen a 60 liter “pro board”.
Also the medium veloce at 1000cm2 has plenty lift all ready at 20kmh.

I ride 190L board and <1000cm2 wings, but thats my preference at least wintertime when swimming back to shore = freezing to death

[mutai]

Hi Buddy,

Good luck with your new build- I’m sure you will do it right!
I was following your V3 build and it inspired me to build mine- Thanks for that.

Eran

[SoEFoil]

Very nice again.

@jeffM

the mast with melted alu box for the Trampa VESC 6 mk5

You’ve gained a lot of experience. Is there a video or time-lapse of the process ?

[jeffM]

No sorry
but it’s pretty simple with the red sand
I used exactly this process for my VESC box :

Lingot Aluminium et moulage au sable rouge. Lingotière perso crée avec une imprimante 3D

I use this tool:
https://www.banggood.com/fr/DANIU-AC110V-or-220V-2100W-3KG-Gold-Melting-Furnace-Digital-Melting-Furnace-Machine-Heating-Capacity-Casting-Refining-Metals-Gold-Silve-p-1695284.html?utm_source=googleshopping&utm_medium=cpc_organic&gmcCountry=FR&utm_content=minha&utm_campaign=minha-fr-fr-pc&currency=EUR&cur_warehouse=CN&createTmp=1&ID=514853&utm_source=googleshopping&utm_medium=cpc_bgs&utm_content=frank&utm_campaign=ssc-fr-all-0302&ad_id=335402343736&gclid=Cj0KCQjw0caCBhCIARIsAGAfuMy-QFBMFv8-VeL0bFZRWmJ9rnwtl5TDlmSPwIY9cDx2G52V_J4YiJ4aAo0UEALw_wcB

and here the link for the stl file
https://drive.google.com/file/d/1ws1ZNTTqEFMXfcofjH7OKhV2tsFXlszd/view?usp=sharing

[jeffM]

For the Prop I use the flite prop with the cone bought here :

Fliteboard PROPELLER COMPLETE - Custom Motors

you need to drill it if you use the flipsky motor :

Flite prop drill for flipsky motor

[jeffM]

Test thermal adhesive tape for the trampa
Good thermal dissipation
https://www.amazon.fr/gp/product/B08732PZ1N/ref=ppx_yo_dt_b_asin_image_o02_s00?ie=UTF8&psc=1
!

[jeffM]

Final test before potting

final test before potting

After I’ll need a smartphone with VESC tool for modified the configuration

And the board is finished
it just misses the pad, which I will install after the first test on the water
in case I need to add an antenna extension

[jeffM]

Potting VESC box finished and box closed with sikaflex gasket

[leoleoleo31]

Hello Jeff,

I’ve got the same magnetic switch as you. How did you manage to include it on the top of the board ? Did you glue the bottom part with epoxy into the foam ?
The bottom part shape is kinda weird as it’s normally made for motorcycle. Thanks

[jeffM]

Hi,
Yes just inserted in the board and glue with epoxy

[jeffM]

All is finished
final test before polish the board

Efoil V4 final test

and the final result, add a green anodize aluminium screen for the cover
This Efoil is 3 kg less than my V3, 14kg without batterie and wing

[coulpi]

Hi Jeff, It’s wonderful, how many centimeters are there between the axis of the mast and the bottom edge of the board ?

[SoEFoil]

It s not necessarily a fixed distance. There’s a consensus that mid mast to board rear you have 1/5 or 20% of board length.

@jeffM, I love your new board and the simplicity of the battery box. Wouldn’t it have been more simple and maybe lighter to have four reinforced holes instead of 2 rails to hold the ESC box (mast) ?

[jeffM]

Thanks Pierre,
28 cm

[jeffM]

Yes you are right. but when I start the board I didn’t have the idear of the melted alu box.
and especially that I added 4 carbon studs to reinforce the rails.
look at the picture.

so if I had to do it again I will remove the rails

[coulpi]

Thanks, so how do you four reinforced holes ?

[coulpi]

Hi what kind of insert did you use to fix your aluminum plate ?

[DiamondDynamics]

• What is the model of brushless motor?