At the end of the video, I had the feeling that if I pressed a little harder on the nose, the board would fold in half. I hope I’ve dissuaded you from wasting your money.
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Yes you have… thats a bummer for my efoil plans 
So i guess I have two options now…
- Buy an Easyfoil TWO inflatable board and build a box
- Build a full foam board from scratch
I did like the advantage to have a very compact board for storing… what should I do…
Out 1st board was an inflatable (not same as the one you are referring too).
We did not have the nose bending issue exept when we did not have enough air pressure in it.
I do not know what brand it is.
The box was 3D printed and both lid and bottom were some kind of reinforced glass fiber (CFK?)
man, your build looks awesome and so clean. love it!
If I go with the easyfoil inflatable, which really seems to be good quality then I would for sure 3d print the rounded sides. inside i was also thinking of building two compartments. one for the battery+bms that would use a screwed in lid and should normally not be opened and the other one for the esc which would be in its aluminium case with all the plugs coming out. this one might get a round hatch as those seem to be the most waterproof…
are you watercooling your esc?
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Yes. The old version was water cooled.
The new version box takes the Fliteboard size mast setup with passive cooling.
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I also built my first board based on an Inflatable, my children still use it.I got it from Alibaba, I rhink it was an easyfoil prototypy, at least it looks like the awrly easyfoil boards, the opening for the boxnos just a bit durther to the front. If you build the top plate big enough that you can stand on it, it works quite well. Also depends on your foil shape/size and angle difference between front and back wing.
One thing that is harder with an inflatable is touch down at speed. They tend to stick to the water surface when you touch down too hard at speed.
Link to my build:
https://foil.zone/t/daniels-un-geared-inflatable-slowly-built
You might have to open the thread directly to be able to scroll down the entire thread.
Another awesome build. What kind of 5mm foam did you use? How much of the structural integrity is because of the material itself and how much of it is because of the fiber and/or carbon layers? I’m still stuck at finding the right material.
First I thought about 10mm XPS foam, but it might not be a good fit or eat up too much space inside the box for the batteries…
It is 5mm Rohacell but you can use any pcv foam ( purposed for lamination core material) with around 50 to 70kg/m3. The stenght comes from the fiber sandwich, the foam itself has no srenght. The thicker the core the more strenght (assuming the same number and kind of carbon layers).
ah so you have the esc connected directly with the mast top plate, right? My plan was to use the embedded 12mm aluminium plate as an intermediary and it also provides the threads for the top plate, but it might become too heavy overall
I had it like that in the early days, go through the whole thread to see changes over the years.
You might have to search for the thread instead of using the embeded link I posted in your thread.
Ah yes I see. I read that you first made a mistake with the 3d printed frame and in a later picture it looks like you only havea bottom and a top plate, connected through standoffs, but I guess that can’t be right…
I changed the link, now it is not embeded anmore and you can read it through until the end. And yes it is to plates that sanwich the board with. standoffs.
just read through the whole threat… really cool to see the design updates over time. Unfortunately they mostly happen through problems 
I call it evolution…
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@DIYfoiler where are you based? I have some inflatable boards, but you would still need to build the box (haven’t had time to build them yet, but do have some designs).
In terms of building a box, Sifly have the most simple design with their hatch on their Rider board. A large Lip at the rear and then a single lightweight latch in the front:
I am from Vienna, Austria. Where are you?
I’m in the UK, so easy enough to post to you.
I’m very likely going to go with a Easyfoil TWO board and build my own box for it. The design step I’m most unsure about is the mast plate connection to the board. My idea was a thick aluminium plate on the bottom with threads, that would only get glassed over on the edges to expose the aluminium directly to the water.
The reason for it was ESC cooling. The ESC gets mounted inside a waterproof aluminium case that it going to sit on the other side of the thick plate and should transfer the heat into the water when it gets in contact. In theory that sounds good, but it feels like overkill.
My ESC will be the Flipsky 75100 Pro V2.0, but I’m open to suggestions. The motor will be a Flipsky 6384.
What do you guys think?
I would go with 75200 immediately, more reserve and better reliability for almost the same price
I think 6384 is a bit on the small side, the inflatable boards needs a little more power to get out of the water… I run a 65161 on mine
thanks. the bigger ESC is probably worth it. i selected the motor due to some legal restrictions. can always upgrade in the future… 
any feedback on the aluminium plate? The bigger ESC might not get as hot as the other one i guess