I’ve finally somewhat finished the mast and the battery build is up next. The battery will probably be LiFePO4 for safety reasons and I’ve choosen to use rather thick board, Lethal FSP PRO 5’3.
The mast clamping is made up of aluminium blocks which have been hand filed, stainless steel screws and stainless steel threaded bars with pipes to be able to apply a high tightening torque. The plastic covers are 3D printed with PETG with a coarse layer height and screwed in placed in tapped holes.
The cooling of the ESC have been modified like others where the two meanders are joined and the two back outlets have been closed. I chose aluminium screws and some high temperature/pressure plumbing thread paste to avoid any galvanic corrosion.
I’ve gone the pumpless route for watercooling. Instead the water is supposed to scooped up behind the front wing and travel up within an aluminum pipe and into the ESC via a plastic tube.
All stainless steel and aluminium contact have been treated with either silicone or Tikal tefgel to again avoid/minimize galvanic corrosion.
Thank you all for the inspiration and knowledge that continuously is spread in this community. I hope this can inspire others !