Flightjunkie's first e-foil build

Hi.

When falling you learn to shoot the board away from you. It’s a different technique with a leash. My leash is 10’. The wave is gone, the leash pulls tight just before I surface. This gives me the knowledge that my board is 10’ away, in that direction. I surface, pull the leash, and catch the board. Works pretty good.

With a big wave the pull on the leash is over 100lbs of force. I wouldn’t trust a retractable leash.

I recommend watching some SUP foil surfers. Like Dave Kalama and see what leashes they use. In this video he has a super long calf leash and has the slack attached to his waist, or just looped in his pants. Works good.

Just my opinion. And yes. No matter what you do, there is some danger to foiling in waves.

Be safe out there!

:call_me_hand:

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May i ask what speed you get out of the 14s battery with the 65161 motor and this wing?
Im doing a similar build and im just getting in chosing a correct motor

Hi.

In my humble opinion the 65161 motor is currently the second best motor behind the Lift / FR motor. I have both.

I recommend the 120kv 65161 motor.

The speed is limited by the foil not the motor. I do 20-25mph with the 65161 motor depending on the foil and the prop.

Good luck with your build!

:call_me_hand:

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Ok tht sounds promising
Thank you very much for the info

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I used a retractable leash for kitesurfing, Eel Reel, It functioned well, but wasn’t needed and overpriced. Worst off it failed after a year $60 gone. They are also bulky! They attach fine to a kitesurfing harness but I don’t know where you would put it just efoiling? A normal leash would have worked fine.

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Hi guys,

Had a nice glassy ride this morning. Thought I’d share the stoke. I’m still flying on the high.

:sunrise::desert_island::ocean::surfing_man::call_me_hand:

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Flightjunkie! So cool when you catch the wave and drop the mike, I mean remote, and just foil surf. Got to get out and do that! :surfing_man: :+1:

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Great vid!!! Which prop and wing set were you riding for this one? Looks like that setup would be perfect for hijacking boat wakes too.

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Nice ride and choice of music, almost like David Gilmour:) :+1:

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Hi.

Thanks for the kind words. I’m riding the slingshot infinity 76 wing. It’s cheap and durable. But, it’s a heavy setup and low aspect ratio. However, it has a wide speed range (7mph - +20mph).

This wing needs about waist high waves to stay on foil without the motor on the e-foil board. I’m using the Lift folding prop.

I plan to try some high aspect foils on the e-foil board and see how they do. I’d like to do power off downwinders. :grin::ocean::surfing_man:

:call_me_hand:

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Wow this thread is really nice @Flightjunkie!!! My compliments.

I just pulled the trigger on 200 LG cells to build a 14s14p pack. Now looking into moto/esc combo.You use two different types of ESC’s, would you recommend spending the extra on the trampa VESC? Or is the Flier a good way to save money?

Btw: I see a lot of “60V” ESC’s on Ali but then only rated for 12/13S, I don’t really understand.

60v esc usually allow up to 57,5 volt i think before warning for over volt.
If you calculate a cell is up to 4,2 volt you would be over that limit.
You usually want to have some safety margins towards max voltage it can handle before breaking.
On skateboards you also using break and regeneration of battery. That can cause voltage spikes towards The esc and that is The reason usually 60volt esc are marked as 12s.
If you charge your 14s batteries to 4.0 volt it will probably work.

Hi.

Thanks for the compliment. I glad you’ve enjoyed the thread. This e-foiling has been a fun DIY project!

I totally recommend the Trampa 75/300 VESC. But, do not attempt to use it for efoil without housing it in a nice deep bath of CorrosionX. Moisture, and condensation will kill it even if you don’t have any leaks.

See my posts on this. Fill the aluminum box with CorrosionX untill the liquid is up to the top of the VESC. Too deep and it could cause the bluetooth signal to be weak. I’ve been running mine like this for a year now. No issues so far.

:call_me_hand:

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@heddan99;Thanks, makes sense, but it was a bit confusing to me. Nominal voltage of 14s should be well within the 60V range.

@Flightjunkie; Thanks! So went ahead and did go to the website… out of stock. “1x VESC 75V 300A” https://trampaboards.com/1x-vesc-75v-300a-in-cnc-t6-silicone-sealed-aluminum-box--the-most-powerful-vedder-electronic-speed-controller-ever--p-26627.html

So would you think the Trampa 75V/250A still is a better alternative to the Flier 400a with the firmware you stated?

Thanks again, you definately have experience in electronics under harsh conditions.

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Prefer VESC over Flier, I had both. VESC is nice because you can configure tons of prameters, especially current limits. HGL-tech, flipsky, makerX sell knockoffs called 75200. I’m quite happy with my hgltech 75200. Vesc also has FOC mode which makes the motor run more silent and current control which lets you control the currentt (proportional to torque.

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Flight Junkie,
Do you need to worry about carrying the board sideways or upside down? Sometimes I take it to deeper water upside down. Would this be a problem for the corrosion X? On another note… We all want to see a video of you and your board on the OneWheel. Do you lock it with a cable at your destination?
Thanks

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Hi.

Upside down is fine. You want the CorrosionX to slosh around. It keeps everything coated. No worries!

I do have a video floating around of me hauling my board down to the beach one the Onewheel. I’ll look for it. And yes, I use a horseshoe lock to lock the Onewheel when I’m out on the water.

:call_me_hand:

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Get a VESC. So much better. Get the 75/300 if you can. But, a knockoff will work. Just get one from a reputable source.

:call_me_hand:

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Hi - I have checked out some of your postings and also your youtube video then you run the Maytech motor with the Flier ESC. Maybe you can help me out :slight_smile:

I have done two successfull builds one with Seaking ESC/SSS motor and now this winter a build with the Maytech kit 300A ESC motor and remote.

However… and maybe you can help out… I want to run the Maytech motor and remote with my Alien ESC because I want to go up to 18S as a test. The motor gives 1 long and two short beep and the remote lights solid, but beside that there it nothing happening when pushing the throttle.

What magic did you pull to get this working with the Flier?

Best regards
Patrik Birgander

Hi,

The flier ESC was a whole issue with the ESC firmware.

I’m not familiar with the alien ESC. Have you searched the forum to see if others have used this ESC in their builds?

It could be something as simple as calibrating the throttle.

I recommend getting a VESC.

:call_me_hand: