After a year of construction I create this post to share this new foil, my second, based on a MALA inflatable board. Pictures, STL, DXF and others of the different stages will arrive as the days go by.
I agree that the board is not quite finished, the pad is missing. But I couldn’t resist sharing these first pictures.
A big thank you to all those who helped me with their advice, especially to @nice2cu those who gave me good advice.
MALA board large model
Foil GONG V2 ( 85 cm )
FLIPSKY 120 kv motor
Remote VX3 FLIPSKY
Propeller FR 6´
12s12p Sony VTC6 battery (the one from my first build that I put in a waterproof akkubox)
VESC RAIDEN 7
Metr.pro can GPS
Contours of the box printed in PETG 25% filling plus 3 layers of carbon fiber inside and outside
Top in AIREX with two layers of fibreglass and two layers of carbon fibre.
Aluminium bottom for passive cooling
GEMLUX hinge
Floor lifter PLASTIMO
See you soon,
Board MALA : '4,4 kg
Akkubox : 10,3 kg ( battery 12s12p + BMS 7,7 kg / waterproof case akkubox : 2,6 kg )
Electric box : 12,1 kg
Motor / Foil GONG V2 size L : 9,6 kg
Motor / Foil GONG V2 size M : 9 kg
Foil in L size : 36,4 kg
Foil in size M : 35,8 kg
That does sound heavy.
The aluminium bottom of the electrical box ( 4 mm thick : 2,3 kg ) and the Akkubox ( 3 mm thick : 824 Grams ) are for a lot I think.
I hope nevertheless to have an adequate passive heat dissipation for thé RAIDEN 7 and the battery
J’ai utilisé AIREX C-70/55 pour le dessus et la trappe du boîtier en raison de sa légèreté et de sa résistance lorsqu’il est doublé de différentes couches de fibre de verre et de carbone :
J’utilise le mât GONG, le V2, alors j’ai conçu une pince de mât pour ce nouveau profil :
Remplissage : 65 %, ASA-X recouvert d’une couche de carbone noir et d’une couche de bleu.
En ce qui concerne la partie électronique, j’utilise le RAIDEN 7 qui se trouve dans une boîte étanche en aluminium qui est elle-même placée sur un verrou étanche en aluminium usiné. J’ai mis du thermo-ruban sous le ZESC et entre la boîte en aluminium et le sas. Je ferai un retour après le premier test si le temps le permet (l’hiver arrive à grande vitesse dans le Jura)
I have also, on the advice of @nice2cu , moved the VX3 receiver into a waterproof case with an antenna extension and the GPS chip from the metr.pro into the small black case.
The black parts on the hatch are parts without carbon fiber, just fiberglass to let the waves pass and avoid the faraday cage effect.
This is a second hand model, it is the big model of Vlastimil the designer of this model.
But at the moment he doesn’t answer on messenger, I’m waiting for his answer to know if he’s going to reissue the MALA because it’s out of stock.
No, with the PLA+ printed box ( after printing 1,5 kg ). I print that with 20% infill. Put one CFK Layer inside and outside and one Layer Glas over all ( also including the Aluminiumbottom) to waterproof all. The top plate is one stupid ( to heavy ) Siebdruckplatte.
Big difference in weight already between the V1 foil gong with 65 mast:
Foil / V1 gear motor with front wings in size L : 8,4 the V2 with 85 mast weighs : 9,6kg
Foil / V1 gear motor with front wings in size M : 8,1 the V2 with 85 mast weighs : 9 kg
The V2 has a much more generous section than the V1 which I managed to sail and crack a plate … We’ll see if the weight gain of the V2 is justified by its stiffness …
In summary my first rigid foil is lighter than my inflatable
Here are the parameters I entered in the RAIDEN 7 ( Continuous current 140 A , Boost 250 A) can you tell me if this is consistent or not.
As a reminder: 12s12p ( Sony VTC6 3000 mah), 55161 Flipsky.
22 kg I must have missed something … 
. First test will be on Sunday if all goes well.