Super light build from Italy 🇮🇹

Build, Repair & Mod
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Possibly One of the Lightest E-Foils in the World – My Custom Build

Hi everyone,

I wanted to share my latest custom e-foil build, which I believe might be one of the lightest ever made. It’s been a long process of research, prototyping, and optimization—but the result is a highly responsive and lightweight setup built for performance and fun.

Specs and Components:

• Board: Levitas Boom 29L, full carbon fiber – just 2.7 kg

• Foil: Full carbon construction (mast + wings). The mast has been internally drilled to allow motor cable routing

• Motor Mount: Hollow 3D printed part using HP’s Multi Jet Fusion technology

• Battery Pack: Molicel P50B cells in a 12S4P configuration, 860Wh total capacity

• Total Weight (incl. battery): Approx. 14.7 kg

• Propeller: Folding prop, currently mounted

Riding Characteristics:

Due to the extremely low volume (29L) of the board, this setup is incredibly lightweight and ultra-responsive. Every small input is immediately translated into motion, making it perfect for advanced riders looking for agility and precision.

That said, getting up on the board is quite tricky because of how little buoyancy it offers—this is definitely not a beginner-friendly setup. For now, I’m using a larger front wing to help with stability and lift until I get more comfortable with the board.

Bonus:

With the folding prop currently installed, pumping becomes remarkably easy. This significantly improves glide time once off power and opens the door to more hybrid styles of riding.

The mast:

The battery:

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image2160×3840 1.58 MB

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image2160×3840 2 MB

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The board:

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IMG_27751320×2868 283 KB

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IMG_27701320×2868 605 KB

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IMG_27801320×2868 198 KB

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The complete build:

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image2160×3840 1.52 MB

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image2160×3840 3.8 MB

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Battery Integration & Waterproofing Details

The battery pack has been fully integrated into the board and includes a BMS. After extensive testing and configuration, the enclosure was sealed using professional-grade windshield adhesive to ensure long-term durability and waterproofing.

I’ve kept access to the USB-C port via a waterproof extender, allowing me to connect for diagnostics or updates when needed. The power button and charging port are also fully waterproof, and the entire system is protected by a custom 3D-printed cover with a gasket seal.

After the first water test, I noticed a slight venting from the battery enclosure — a clear sign that the compartment went into positive pressure and held it, meaning the waterproof seal was working perfectly and no water ingress occurred. This was a great confirmation that the system is truly sealed.

The mast is connected to the board using a waterproof Cleanse connector rated for up to 50A continuous current. This makes disassembly and transport easier without compromising reliability or performance.

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The board in action:

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Really nice work! The finished board looks nice with the sealed battery compartment. I hope the esc isn’t getting too hot? Looks like a small fan is the only cooling

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What region of Italy are you in?

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I went for a range test yesterday, and didn’t get any problem with it, maybee with the smaller wing I will have some overheating

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Garda lake, Desenzano :slight_smile:

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verry nice build, but I guess swapping battery’s during the day is definitely a no go

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You can swap boards :rofl: anyway p50b changes pretty fast

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Full build video here:

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Beautiful setup, thank you for sharing

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That looks super high quality.

saite 63100 motor? and which esc? and how much run time do you get with 12s4p?

How did you tackle waterpoof connectors between mast and board?

Could the port not be moved to the front of the board out of the way of feet?

Off the shelf it is possible to mount the foildrive low for a 10.9kg set-up but this undoubtedly has more drag with cables outside and limited run time with smaller batteries/ motor

You easily beat the latest £16k 18.5kg fliteboard ultra L2 though :stuck_out_tongue:

Shorter boards clearly require more power & technique to start but more fun when riding https://youtu.be/DGAiJxbKjXU?si=eCwWmGiz4MjcHIbi