Chinese hydrofoil for efoil?

First you have to choose the EN interface in the top right corner. By default they estimate that you live in EU so they include 20% taxes and 20€ shipping. This disappears when you click on “Proceed to Checkout” where you can choose your country.
If you are outside the EU, they remove the VAT (divide by 1.2) that is 332.5€ (370USD). To know the shipping cost, you have to request a quote by email
So a 399€ foil, should cost around 430-450usd to the US including shipping but without import taxes.
For a few $$ more, during the ordering process, on top of a 80 or 90cm mast, can also swap the classic front wing for one of the PRO line (see @Riwi 's comments about the Gong PRO M front wing with kite stab) .

See also @Louis build post:

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Thanks for all your information. I manged to duplicate the steps you outlined and did see that the price was lower than I thought, as you said it would be. I was not able to get to any were that talked about the foil assembly with the pro wing or the longer mast option. I did request shipping information and some detail about the foil. Waiting on a response. I also read all the links you suggested. Great Info.
I am thinking all foils are probably made in China. Everyone claims to have great technology and research. I was really happy with my current cheap Chinese foil. Its the only foil I have ever seen in person. I just want to try something different. As I get closer to a purchase I will probably be asking more questions.

A couple months ago I was able to buy the gong allvator surf foil with a 80cm mast and the pro m wing. You just need to ask them for the special order. I found them very helpful.

Requested by kitefoil beginners looking for more lift at any speed, see also their Kitefoil range where you can find two foils with M “surf” front wings with masts longer than what you need in a Surf/Sup practice (65cm):

As @rogjalon said, when in doubt, they are always very helpful by mail. That’s how you can get a Pro M front W with a shorter 80cm mast.

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Would anyone recommend the GONG SURFOIL ALLVATOR 65 L for a novice 85Kg rider using 61512 motor? Will only be used on a flat lake and not in the sea or in waves.
I just want to double check before i hit the order button.

Feel free to recommend any other Gong Combinations.

I just pulled the trigger on the GONG SURFOIL 65 M.

Nick at Gong has suggested the best foil for me would be the pro clear XL. He has offered me the option to custom order the GONG KITEFOIL ALLVATOR FREESTYLE XL and swap out to the PRO front wing for 100 euros extra.
Not seeing many on here using the XL wings, Its going to be harder to transport for me an i wonder if i really need to go for the XL

1 - Pro L or Pro XL: since 2017 and then the we know that any surface in the 800-900cm2 used on efoils (Nobile kitefoil 815cm, Gong M 900+ cm2, Slingshot Gamma, … ) can fly riders up to 80/85kg (170ish lbs). Anything bigger means comfort, stability faster learing curve and slower speed. During the first hour you will praise the stability of a XL wing (92cm, 1730cm2) but after 2 hours, you might reach the top speed and probably prefer the Pro L (77cm, 1230cm2 plus a good glide reported by Louis). You can’t go wrong with the L Pro (a bit cheaper -20eu- as well). If you are SupFoiling, or if you want to efoil at low speed (longer battery life), the XL might be a good option though.
2 - Pro clear or just “Pro” ? They charge an extra 50EUR for a better clear carbon look. Same wing performance just an extra Torx screw on the “Clear” model for more rigidity in turns. Up to you.

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Its a little bit of a gamble. My current Chinese foil has a 80 cm mast. I like it, its fun. I am keeping that build intact, so if something goes wrong, I still have something to ride.

I don’t know if I will like it or not, these are my thoughts. I am about 195 pounds.

  1. My new build, (Third build), 23" wide, 60" long, 4" thick, - So hopefully its light weight.
  2. A short mast might feel better because it changes the height on the mast where the motor pushes on.
  3. I do 95% of my riding on a little lake that does not have big waves.
  4. The M wing may be a little small for me. I am hoping it will be a little faster than my old foil.
  5. The GONG mast profile looks a lot like my current Chinese foil mast. So maybe they are interchangeable.
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Hi Mac,

I am on the purchase phase for my first efoil build. are you happy with the performance of this foil?

Regards,

@Vincentbraillard have you tried the New CrazyFoil Jet Track 2020?


https://crazyfoil.com/shop/2020/jet-track/jet-track-2020/

Thinking about cutting on weight and upgrading my wings for more lift since these CR:X foils are not only rather small but also heavy

Hi. I run with this wing and work like a charme

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Perfect! I like that the setup comes with a large and small wing for a great price!

Also got around to making a small test stand for the foil. Took me awhile but finally came up with the easiest & cheapest way to do it!

image

Used the wing threads to mount a piece of aluminum channel to and just c-clamped the channel to the boat lift. That way I could raise and lower it in i had to check anything or later on when I begin testing multiple prop configurations.

image

Anyways when adjusting the max phase current to 120A the motor ran full out with no issues at all (roughly 10,000 RPM measured)

When max phase currents were set to 150A the motor could not maintain consistency with erratic pulses in the RPM kinda like it was hesitating briefly

Felt like a 2-stroke motor fighting to keep going on an empty tank

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Really nice test setup. Does this have any force or thrust measurement capability. I was thinking of something similar and integrating a hinge and a load cell to measure force. You are way ahead of me so far though.

Not yet but the lift frame is able to pivot 3 to 4 inches in both directions. So I think I have an old luggage scale at home that I would like to fix to one of the canopy supports so see what kind of thrust I’m getting.

Not the most precise method but should work for comparisons

How about efficiency? do you have a log to compare?

Hi. @23kph, ~30amp with 12S

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I am now a proud owner! And cant wait to try it out

Not bad, with which front wing? They also have 30” front wing I am thinking to add 30” wing to my purchase also

I have try both. With the big you can from 16kph but to much lift and drag for high speed. With the smaller one, fly from 18kph and wirk very well to! I have just print a small parts to change a little bit the angle of the from wing. I can share it if you want!

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