80100 direct cooling


#41

I was thinking for an easy stand that you could quickly attach and take apart. I couldn’t come up with a good idea.


#42

yes… with the weight of the board, it’s a pain to attach the foil… i was thinking tall sawhorses may be… that photo tripod thing work great to hold it, bot not stable enough when trying to attach the foil…


#43

I don‘t care that much about the surface of my board, so I just flip it around to work on the bottom. Everything has to be secured in place though.


#44

I do the same… with pad on the deck, you’re not scratching anything, expecially on sand or grass! Inserting mast under the board it’s not easy with my track system


#45

regarding pad… What did you use?

i’m so happy with my paint job, i didn’t want to hide it so i’m waiting to receive that: https://waal.co/
i’ll put feedback if it does the job :slight_smile:


#46

I use thin eva pad, 2mm thick, for dingy and cathamarans.


#47

Such a good looking board mate, nice work. Look forward to the movie.


#48

Board’s almost ready to hit the water…
finally installed the “anti slip” thing… i don’t know if it works well, but for sure it looks good!


#49

Congrats! So sick man


#50

Amazing work!! Do you plan to pull the batteries out? Or charge them through the port hole? What sort of electronics did you pack in front?


#51

There are 2 separate electric bays: one for the batteries and one for the electronics
I’ll have to take the batteries out for now to charge them, it’s closed with bunch of screws, i might add a second hatch later on to access the batteries without unscrewing the Plexiglas.

Below is the electronic package, being assembled, not all connected yet:
same components as for the prototype, but i replace the power analyzer by a 350A TK15 Professional Precision Battery Tester. I didn’t power it on yet.
and i’m still wondering if i leave the water cooling on all the time or only when the temperature of the ESC pass a certain threshold.


#52

What reason do you have for removing the sensor from the motor? Doesn’t the ESC rely on feedback from the sensor in order to drive the motor more efficiently?


#53

Wicked build Mat congratulations! are the containers 3D printed?

Post a ride video as soon as you’ve got one!!


#54

The sensor doens’t seem 100% necessary, most ESCs i saw were not made to handle sensors.
But most importantly i didn’t want to have to manage the connection and waterproof all those extra wires.


#55

The boxes are made of plywood and lot of fiberglass.
On top of the 2 visible boxes, there’s a 3rd one hidden inside the board that house the wire connection to the mast (simple bullet connectors for now, and may be a 3d printed all in one connector later)

The idea is to have all the stress from the mast transferred along the board via this box, that’s why I didn’t bother adding a stringer.


Water test planned for the weekend if i managed to tie the last lose ends during the week…
quick video will come as soon as it flies, but i have footage of the whole build for a longer movie afterward.


#56

I wonder if you can make something like this yourself? Some soft but clear polyurethane mixed with Aerosil and using foam texture roller, or even thick silicone with some filler?


#57

I saw online some people using spay bed liner or wooden deck anti-slip paint.

the big question are: will it become grippy or slipery with water? and will it hurt your knees or wetsuit?


#58

My standard Fanatic windsurf board grip hurts my wetsuit like nothing else, it is like legit sandpaper. So maybe this is a trade off that is necessary :smile:


#59

Hi Mat

Nice board. Do you make alone or it is a Brand?

I’m looking some board but not lucky. I was thinking to buy a crude board (in italiano is grezzo) to work on but I didn’t find.

Anybody can help me to buy a board to make alone to give the right shape?


#60

board is made from scratch, it’s very similar to making a surfboard with some strength added in the right place.
I found the big pieces of polystyrene in a place that make polystyrene fake cakes… :slight_smile:

after that: a hot-wire to cut it make it easier, and then it’s like making a surfboard…