Foil Drive Assist, DIY

Does anyone know of a 3 cable plug similar to the amass mr60 that can handle more amps (say 90 or even 120?). If so, please post a link. Even better if it was waterproof.

I’m keen to build a new board to integrate the foil assist and am thinking about the neatest way of connecting the motor cables to the board in the hull under the water. I have found loads of single cable waterproof connectors but looking for something less bulky that can handle the power.

Thanks in advance.

2 Likes

I think you could design a custom MR90 and print it PA12

1 Like

Well this is cheeky!!! Foild Drive has tried to patent the under the board unit…

image

So in a video claiming 2 years testing, their priority date is only 25/02/2022 :rofl:

2 Likes

I believe this has the possibility to make Chris de France (the PWR founder and a really nice rider/guy) laugh very hard!!

Well Lacroix also claims to have patented…

I’m not sure how easy it would be defend any of the patents, or of they’ll just try a scare tactic…
The drawings on the patent are very interesting… I have a bunch of similar designs but need to check dates…

it’s a fair move to patent their product, they have likely invested a lot of time and they are genuine people, riders. they also likely spent a lot of time on this, sacrifices on the family, their kids. we are talking about a bunch of good folks here. sometimes, people do patent to protect their innovation which is a good practice. they care about their community and I believe they truly does.

a good counter example of this on which I don’t have enough middle fingers would be Future Motion, who took someone idea/concept/prototype and made a product called Onewheel. They never gave credits and they act like rubbish.

Last, when you pull out your patent, it involves lawyers etc…

I may be wrong, but such patent is comparable to someone who would could have claim the patent of inventing an electric skateboard. I’m not a lawyer and I respect hard work. Time will tell.

1 Like

It’s not about the hard work, patents needs to have an invention as base, if the invention is already disclosed publicly then the patent can’t / shouldn’t be approved.
This is questionable, what novelty has foildrive invented?

4 Likes

And as well you need stiffness and strength of alloy to take all that forces. With carbonfibre it would be more complicated and more expensive… Jezza you need to drill those cases for us :wink:

Well actually pwrfoil and voltefoil are selling this solution (the under the board fixed battery) since long…so if foildrive gets a patent there it would be just as ridicolous as liftfoil got a general efoil patent :face_vomiting:

2 Likes

We can easily imagine that a four-month test and error period was necessary before applying to be sure it was worth it. That’s a total of two years (oct 2021 - oct 2023)…

About touch downs with the enclosure beneath the board when doing down-wind :

There’s a podcast on YouTube where Jamie says he spent two years developing and testing samples. If he started this at the same time as learning Fusion 360, then why not.

Sorry for the rookie question. Ive been following this thread for months now. Does anyone have a link to a complete how to guide for waterproofing these 6384 motors? My first attempt i used too much epoxy around the windings on the wire hookup side of stator and now i cant get it back together. Trying to cut back some of the epoxy is sketchy without the risk of damaging the lacquered winding wires.

Id like to try again with a new motor but would love to study up on how others have done it sucessfully first. Thanks!

No need for epoxy coating, just soak in CorrosionX every 3-4 uses. In my opinion epoxy adds a layer of complexity - keep it simple.

4 Likes

You could try to use a lathe to remove the excess epoxy of the stator. Worked for me with the bell, had a bit too much on the inside.

2 Likes

If epoxy is needed depends on how good the winding is laquered, if there are any loose strands of wire then these are likely to develop metal fatigue breaks over time due to turbulence and cavitation inside the rotor bell. I’ve gotten this on two outrunners on my efoil.

2 Likes

Thanks for the information guys. For the next motor, I may just brush on a light coat of epoxy over the windings and then soak in corrosion X to protect the other bits. I will swap over bearings to ceramic of course.

Like a few others I have been working on a new foil assist system for between the mast and board. I have started to experiment with getting the signal to pass thru the carbon fiber board without an extended antenna on top of the board.

So far I have not been able to make it work 100 percent of the time. The signal gets very weak and has difficulty transmitting thru the board. I can get the signal to work 2 inches under saltwater but not also thru the carbon board.

My thought was maybe a raised section with the antenna in it that drops into the foil track boxes 20mm or so, that way at least 1 layer of carbon has already been passed.

Does anyone have any insight to how foil drive is making there setup have such a good signal?

Stuff the tracks with closed cell foam to allow the signal to pass.

1 Like

It is 2.4ghz, right? You can try directional antenna and place it straight at the top of the box face up.
https://www.t9hobbysport.com/frsky-infinity-2.4ghz-directional-antenna
2.4Ghz WiFi Antenna

Interesting to test BREmote LR, I expect it to beat everything.