After some research, cheap AliExpress BEC burnt Bremote RX, sad day for me. I’ll be a lot more selective about BEC quality now and will focus more on cooling everything down. I bought Mateksys BEC.
I received my 2 ESC’s SEQURE 12200, added a big cooler to chill MOSFETs one one side and make a good interface between ESC and batteries to avoid heating chain reaction, the others Mosfet’s are also stuck on my outside heatsinks.
I hope the seawater flow from a pipe fixed on the bottom of the board would be sufficient
Water flow with a horizontal pipe stuck on the bottom of the board is sufficient to cool both ESC.
One day the pipe turned a bit and my ESC tripped on safety temperature, it proves it’s efficient and necessary for my system. Both BEC’s are stuck on the cooler also to keep there temperature down.
Really happy with Sequre 200 amp ESC, cheap, protected by alu casing (more than X Cross) and powerful.
I only ride my 30 liters board with 1100cm2 foil. Take off must be lean on the board to be gentle with the system. Autonomy is really crazy, about 1h30 non stop running and a lot more when surfing.
Next step:
Try longer masts, from 20 to 30cm to handle the chop better using GONG masts and use new Flipsky 6384 waterproof because my DIY 6384 epoxy coating is a crap
I confirm cooling is a necessity because my cooling system was not properly set today and my motors oscillated again because ESC were at the temperature limit. Use internal cooler !
My poor epoxy coating expands a bit when I push trigger too much, it stucks the rotor on the stator. A bit of sanding and let’s go again.
Because I wait for a new Bremote, with Maytech remote, I connected one PWM signal on the static switch, it allows me to change direction of my boogie on one side by stopping a motor. I need to push 2 times on On/off button.
I plan to connect the other PWM on the transistor switch to be allowed to go in the other side.
It allows to steer the boogie to come back with a Maytech remote. Impossible to use it during a ride.
Thinking to buy the Sequre 12200 for foil assist in a pelican and mount this esc on the outside as it is encased in the alu box. What do you think about it?
How this alu box built, does it need much waterproofing?
I think it’s tricky to waterproof the Sequre, the alu box is great, better than X cross for sea water drops when you change your foil assist batteries on the beach but won’t never replace a real waterproof ESC, motor phase and battery connectors are still outside and difficult to protect IMO.
Now the Pelican is mounted on a huge 48’ boogie with a noodle forward. Really stable, turns great and handles the chop a bit.
My gong mast are heavier and deeper than my previous 3d print parts. It keeps a bit better the trust when the boogie bounces in the chop.
Flipsky motors are much powerful than AliExpress
Still using the Maytech remote with possibility of stopping one motor with the switch to reorientate the board to come back, not the best but it works
I use an external Maytech 1m antenna fitted on a flag pole, better range but still some issue with the homemade waterproofing. After some sessions, it still looses it’s signal strength. I don’t know why.
