Mint couch - eFoil from Poland

[Idea]

Hi

A month ago I first tried to fly/swim on a Takuma board, I failed.

My flights lasted no more than 10 seconds, despite a large wing, after half an hour the board broke and for 45 minutes I swam to the shore dragging the board with me
Despite this, I fell in love

On the same day I decided to build my own efoil

For several years I have been building electric boards, designing and manufacturing parts (https://www.instagram.com/ideatb/), but water is not my element, I’ve never sailed on anything … so efoil is a new thing for mine.

My efoil won’t be anything special, There are many similar
I would like it to be low-failure and efficient, I do not expect anything else more
I spent many hours in this forum learning the basics and ordered most of the parts.

This is my setup:
Board: Takuma - damaged, to be repaired and modified
Motor: Flipsky 100kV (Bbcause there was no 120kV available)
Foil: GONG Surffoil Allvator Curve L
ESC: Flipsky High Current FSESC 200A
Battery: 12S11P - Samsung 40T
Remote: Maytech MTSKR1905WF V2
BMS: maybe without … I’m still wondering
Propeller: I wanted to buy a FR propeller but @Flying_Rodeo is not responding so I’m still looking
Additionally: METR Pro, Corrosionx etc.

More info soon …

Regards:
Tom

[Jezza]

I see you manufacture your own parts for esk8, do you have your own CNC or are you using another shop?
Where did you get the damaged Takuma from?

[brown5tick]

Dude, I’m still waiting for you to sell me your badass drop-down brackets!

[Idea]

@Jezza
I have a CNC milling machine, but I am a busy guy, so I would like to buy ready-made elements, I don’t have time to design and make parts in single copies

The motor mount will probably I print, although I have an idea how to do it with aluminum

I bought a Takuma board by accident … a few days ago I talked to a guy who has Jet Surf rentals, he mentioned that he has a Takuma board with a damaged mast mount, so I bought it the next day … A few days early I bought a racing board kite for modification, so I have two boards

@brown5tick
Do you mean this concept?
https://www.instagram.com/p/B2l8ZUwBURm/?utm_source=ig_web_copy_link

[Idea]

I wanted to design and build my own board, unfortunately, due to lack of time, I decided to buy a used board and modify it

I bought a Monaro V3, unfortunately this board has a thin deck, so I would have a lot of modifications

I was lucky and a few days later I bought a damaged takuma, unfortunately it’s “Cruising”

This board is huge ( size 6’4x30: 150 l)
This is probably the largest commercial efoil , That’s why I called it the Mint Couch
The board is heavy, the empty board weighs about 15.5 kg

Unfortunately, there are more disadvantages. Takuma has a specific cooling system.

The controller is cooled by water and air.
There is a radiator at the bottom of the board and the bottom of the chamber has holes, so water is poured inside the chamber,
This is a board with a mini pool

So in addition to repairing the mast mount, I also need to seal the chamber

There are also advantages

• It’s an efoil board so I will have a lot less work
• The large buoyancy of the board will be better for learning, I am a novice
• The battery compartment is large,

I will be able to take my whole family, my wife, son and cat for a ride
The board can be used as a bed (190 cm 74,8 Inch long)

The weight of the heat sink and the ESC plate is 10% of the weight of the entire board

[Jezza]

Nice, what milling machine do you have?

[Idea]

MLM, is a Polish milling machine with limited possibilities

[Jezza]

Throw some pics in. I think it’s great to see the tools guys use too…

[Thom]

Great board for beginners. I tried it and the buyancy is huge. On the down side, it is heavy so tight turns are challenging.
How much did you buy it for ?
Also, is the black part made of Plastic ? Vacuum formed plastic maybe ?

Be careful, this hatch and seal is not waterproof.

[Idea]

I would like to tell you what the price was, but the seller asked me not to say it
I can only say is that the price was attractive …

This is probably a vacuum formed ABS, but i’m not a plastic specialist

Yes, I know the hatch is not waterproof, I checked it …

I hope I can change it by replacing the seal

In addition, I mounts two additional housings in the chamber,
the first for the accumulator, the second for the ESC and receiver

[Jezza]

The MLM machines look really decent! Which version are you running?

[Idea]

I have a milling machine with a cast iron frame, model IR 432 MLM,
It’s not the worst, but it’s not perfect.
It has a small working field (440x320x140mm)

After the purchase, I had to move the electronics to another place, and after 2 years I replaced the spindle with a 2.2kW with ceramic bearings.

[Jezza]

Thats big enough to cut props which is what many on the forum need!
What feed rates can you cut Aluminium at?

[Idea]

I need a propeller too but @Flying_Rodeonie does not answer my questions about price and availability

The prop is the last thing I would like to mill … It is a very time consuming process and I have no such practice

I ordered some Chinese 7 1/4 x 5 propellers, I will modify them.

I will probably modify the propeller with a milling machine, This is a much simpler machining process,
I will be able to repeat it many times, but I have to find a propeller with an acceptable profile and fit the right cut.

To begin with, such modified propellers must be enough for me

[Idea]

I already have most of the elements, waiting for the delivery of a few propellers for modification

I changed my plans for batteries, I chose the most efficient batteries, i.e. Molicel INR21700-P42A

I builds 12S10P package with option to upgrade to 14S10P.