No I haven’t tried the natural forced flow without pump, I don’t know if it can work
E-Foil Monteynard
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Salut Jean-François,
Je suppose que je peux écrire directement en français vu l’endroit où tu navigues ^^ Je crois que nous ne devons pas être très éloigné? (je suis sur Annecy 
).
Avant hier, j’ai vu pour la 1ère fois ce genre d’engin naviguer sur le lac. Intrigué, j’ai cherché et suis rapidement tombé cette communauté qui semble bien active.
Depuis prèsque 2j je scrute donc ce forum à la recherche d’infos, prêt à me lancer aussi dans l’aventure efoil.
D’ailleurs vraiment reconnaissant pour les infos partagés ici, ça fait gagner beaucoup de temps et merci pour la liste d’achat!. Des produits sont déjà dans mon panier banggood 
.
Voilà pas mal de taf et questions à venir…
S’il y’a possibilité un jour de voir en vrai ce que ça donne, sur monteynard ou annecy, ce serait top!
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Salut Etienne,
I’m from Grenoble, in fact I mainly do kitefoil, E-Foil it’s just to wait for the wind and for my children, so I’m mainly in Monteynard because it’s windy every day.
Sometimes I go to the lake Bourget when there is weather wind with E-foil in case the wind does not come in, but I never go to Annecy.
For the E-foil in Annecy, I was told that it was forbidden???
so find out before you start your construction, if this information is true
A+ sur un lac de notre région
Ok thanks for your answer. I don’t know if Annecy allows it or not, I’ll have to check.
As I said I saw someone a few days back with an efoil and yesterday 2 kitefoil at least were on the lake.
On my side I started kitesurf a few years ago and then bought my own equipment.
Unfortunately I’m not at ease with it. After a small misadventure this summer trying my kite on a field, I decided I would sell the kite which is too dangerous for my level (I’m beginner).
Now I’m thinking switching to efoil or simply navigate with something motorized (surfboard, whatever …) just to go in the middle of the lake 
… before eventually going back to kitesurf with adequate equipment.
BTW I’ll follow your advice and check for annecy if this is ok otherwise “Lac du Bourget” and “Monteynard” may be good options even if last one is a bit far (1h30 by road).
Thanks again for all tips.
(PS: Sorry if this was a bit off topic, I’ll preferably contact through PM.)
EDIT: after verification with a link sent by @sat_be it is currently temporarily allowed (http://www.haute-savoie.gouv.fr/content/download/32216/191159/file/ARP_experimentation_planches_motorisees.pdf)
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@jeffM great thread here. I have a few questions for you (or others) as I embark on my first build.
- exactly what foil did you use from gong? looks like XL but Im confused on their webpage options and the differences between S?UP/Kite/Surf?
-has anyone created fusion SLT files for the gong mast with pacificmeister’s SSS motor?
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Hi, this is the XL curve wingfoil ( carbon aluminum) you will find the link in my excel file above
Part list plus wiring diagram = good job ! 
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Does anyone have the flipsky motor 12mm file in .step ?
18650 build finished, and tested today, very Happy.
it’s samsung 30q 12S/10P with BMS
spotweler and charger
busbar:
BMS connection :
3 Likes
tested today with the Autumn colors
ride time : 1H15
max temp : 45 C
Amp average : 18A
swimming fins and other prop into the bag
And I lent my E-foil V3 to my friend and took back my e-foil V1
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18Amps?! What motor and wing are you using?
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Flipsky 120kv, Gong XL Curve (1st post 
)
If I analyse correctly, the 20+% amp gain comes from a more triangular prop blade shape:
@jeffM, I find really interesting that your kill switch did not show any kind of damage on your V1 and V3 ESCs.
To know what to expect from a Gong XL Curve, what are now your take-off and max speed (even if speed is not your goal) ? Did you find/borrow a L or M Gong Curve to test/feel differences ?
Compared to the direct drive simplicity of the V3, what differences do you notice when you ride the geared V1 efoil again ? Would you build a geared efoil again or not worth the extra hassle ?
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ok, the XL explaines the low current rating.
Gong doesn’t stock any xl wing anymore I have been looking for it for a while now
with the curve I don’t no exactly the speed for the take off (I will look at my GPS for the next ride) I think 13/14 km/h and Vmax 25km/h after there is a whistling certainly due to stab, and I don’t like the noise when I ride.
Never test L or M gong curve but I ride with a ketos foil with cruiser / wave XL and fr2
and the XXL curve start really earlier. But I tried it on a kitefoil, and it’s not very fun “pleasant”
it’s too big.
V1 more power but more noise, and more complicated for construction.
if i build a new one it will be with an engine like the flypsky
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Could you share current pick to go on the wing in this config and yours weight? Your board still 24kg?
SoEFoil wrote:
If I analyse correctly, the 20+% amp gain comes from a more triangular prop blade shape:
=> the gain 23A to 18A comes : new prop diam 132mm old 125mm
and i sanding the trailing edge (more sharp). I don’t think the shape improved
efficiency. Because I tried to do the same but you’re right it’s not realy the same
it’s more triangular but it’s exactly the same blade.
On the first propeller I had done a “dirty job” , I had a slightly different blade
look on the picture of the lower blade
and also I sanded the cone at the base of the blades
I look forward to receiving the aluminum propeller from FR to compare the efficiency and install the swirlcone from cim96dm7
1 Like