Foil Drive Assist, DIY

I’ve put the 3M 5200 and it takes A WHILE to cure. After 2 days it’s still a bit tacky. I’m not in a hurry but compared to Sikaflex F11C… it’s VERY VERY (VERY) LONG. The bond seems very good.


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@cephalofoil according to the p42 cell datasheet and also my crude math, you should expect a voltage drop from 4.2v to 3.6v@40A discharge rate.
So in theory (to MY math) your FD 6s3p Li-ion pack can “safely” deliver 126A continuously at a voltage of 21.6v, so 21.6V*126A = 2,721‎‫.‬‎6W
Personally, I wouldn’t push this battery pack past 1000w continuously.
Don’t tell my Math teacher.

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Thanks Eden.
What I am curious about is can I expect a similar performance with an 18650 pack (6s4p of 30q cells)
With a reasonable safety margin?
Should I try to make a 6s5p or would I be better off buying new cells and sticking to the 21700?
Cheers

yes you are right this vesc looks promising . So for motor what is best solution for 8s and rear mount ?

for the VESC, I will be testing it back to back with my current traditional ESC and good thing will be the telemetry, to better see what is going on.

When it comes to 3M 5200, it’s a long road that requires patience. I’m going to slightly sand the area and add a bit more 3M 5200 on the joints below to smooth things and a bit on the inside to ensure a perfect seal. That’s more or less a 2 weeks journey to allow the 3M to dry appropriately




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3m makes a fast cure 5200 that is easier to work with and still retains all the properties of the regular 5200.

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yes, spot on… but I took the normal cure! Next time, I will go with the fast cure. No doubt!

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Are you letting the esc into the bottom just for cooling? You mentioned earlier that you needed the space but there looks like room for a receiver. I’m as anxious as you for your 5200 to dry!
Scott

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yes, in my other (working) build, I put the ESC inside the box and it was getting up to 70°C. With this option and although it’s plastic, I often throw water on the board and below. This will for sure help in cooling the controller. For 5200, it’s just a matter of time. 7 days is a good target for a full dry (and waterproof testing). If that works, I’ll be switching to the MakerX in my first build and also dig the enclosure.

I understand correctly that you are going to cool the plastic part of the ESC case and think that this will be effective?

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ehhe, well yes, it’s probably stupid but probably a bit better than cooling nothing, or equally similar to my other build which works pretty fine

Through the opening of the ESC box, if the ESC surface is in contact with the board pad that is regularly wet, this could become a good solution … Maybe adding a piece à fabrics (sponge) between the pad and the ESC could keep enough humidity to cool the ESC significantly down … :thinking:

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A nice way for passive cooling: is to get a aluminum plate 2mm the size of the bottom of the case, cut the case the size of the esc , glued the plate on the outside of the case and put the esc through the cut on the plate , pressure hold , padding …
Can be done on bottom or top , the full plate will easy waterproofing and rigidity

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Hey guys,

I tested these days my setting designed exclusively for winging. Some minimal support while pumping to get on foil.
Low thrust, but therefore low drag and low weight. It worked out pretty well for me.

Flipsky 5062, Flycolour 70A, 6S-Battery, Maytech-Controller

The mount of the controller (with the help of a 3-D printed box) worked really good. I could concentrate on pumping the wing without being disturbed activating the trigger.



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Cool, do you think the #scubajet below the wingfoil board could work as well just to get airborne? Or even better this new subnado for 300$. https://subnado-compact-lightweight.kckb.st/4450081a This would be awesome cheap boostfin or foildrive…

hi, great design. I see that the nose of the support has a hole. is it for cooling without pump? Would you dare to cover that hole and leave without refrigeration? Do you think the temperature of the Flycolour would rise a lot? what weight do you have? I’m at 100kg and I think I’m going to build a second efoil just for the wingfoil and I like your setup. if you could remove the water pipe and leave it without water cooling that would be great. Cheers

Really nice product, but I fear, it won’t support winging i a proper way:

  • The thrust is similar to my setting. But the drag is higher and I’m not sure about the prop efficiency.
  • Could be difficult to mount it to the board/mast.
  • Especially for wingingsupport I dont’t see any alternative to a remote controller.

There is no cooling system, these are only the holes for the screws for fixing the two mount-parts together. (could be designed more efficient, that’s true…)

But there is no cooling system necessary for the motor. Usually the ESC (in the waterproofed box on the board) must be cooled. But for this tiny system with the motor running only for some seconds in wide temporal distances even this isn’t necessary.

My weight is 80 kg. The system is not powerful. At borderline winds it must be combined with pumping of board and wing. So I guess you need something stronger.

Hello @pablo_foil Pablo, have you already tried with the F5085?

Do you have STL files for masti GONG v1?

I weigh 100 kg and as @Apsyrtides says, I think I need something more powerful than the F5062

Thanks