Danish Efoil build V2 - What I learnt and inspiration for others

Build, Repair & Mod
21

I agree with you guys, now that I think about it. Correct me if I am wrong, but with 2 layers of 0,2x8mm pure nickel strip in a 14s12p batterypack, and assuming 10A continuous through a single 0,2x8mm strip, I should be able to pull roughly 240A continuously from the pack. I have no idea, why I chose such a small fuse. Although I doubt the 6 gauge wire between the battery and VESC can handle such power.

22

I cannot say, if switching the power on and off from the battery is possible with the daly BMS, as I have yet to use one in my builds - Although it sounds like a nice feature to have.

I use a 3 pin plug (same plug for charging) between the Battery and VESC with a 100ohm resistor with heatsink in series to prevent the spark, before plugging in the main power wires. This works great - but it is obviously not fool proof, as you need to know, that the 3 pin connector must be plugged in before the main power wires.

Regarding the mast adapter plate - I am using this to have an easy and fast way of attaching and detaching the mast and still keeping a waterproof compartment. As I don’t want to glue the phase wires inside the mast for waterproofing, I use cable glands for sealing the wires, and the adapter plate with a groove for a silicone o-ring for sealing against the underside of the board.
On my previous board, did I have to unscrew the cable glands everytime I was detaching the foildrive. This was very annoying, and I knew this had to change on my second attempt.

You could silicone the wires directly to the mast plate/mast, but imagine if you need to someday remove the motor from the mast. When building both my Efoil, I was pulling the motor on and off the mast many times - can’t imagine the headache, if the phase wires was siliconed inside the mast/mast plate (just something to think about).

The advantages of using an o-ring, is that the connection between the mast and board will be rigid (hard surface against hard surface). With a silicone slice between, you might have a not so rigid connection.

All this is just my take on it:)