# Another Waist assist
**URL:** https://foil.zone/t/another-waist-assist/27074
**Category:** Build, Repair & Mod
**Created:** [August 27, 2026, 6:29am UTC](https://foil.zone/t/another-waist-assist/27074 "2026-08-27T06:29:48Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@mtx](https://foil.zone/u/mtx)
#### Post date: [August 27, 2026, 6:29am UTC](https://foil.zone/t/another-waist-assist/27074/1 "2026-08-27T06:29:48Z")
Hello I’m sharing my build, most decisions are based on reading topics here. I’m learning to wingfoil, so the assist helps me go upwind all the time and take off on low-wind days.
I have enought cable to move the motor pod to the botom and use it like the duotone on cruise mode to practice on the foil ( i still need design and print a cable guide for my mast)
Parts:
Duotone Waist
AliExpress ip67 abs box
Flipsky 6384
Flipsky 75200 v2 esc
Flipsky vx5 remote
Ali m25 ip67 connectors
2m 3phase coil cable from Ali.
Motorpod. Printed a ziptype.
12s2p ampace jp40
My biggest concern right now is the box’s watertightness, anyway I’m using it on saltwater and everything is fine so far.
Any advice is superwelcome
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### Author:  [@Fredo](https://foil.zone/u/Fredo)
#### Post date: [August 27, 2026, 6:42am UTC](https://foil.zone/t/another-waist-assist/27074/2 "2026-08-27T06:42:06Z")
Hello, cool build well done.
How are you fixing the box to the duotone belt?
I know someone on printables design a 3d part to secure the latches closed for this box
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### Author:  [@mtx](https://foil.zone/u/mtx)
#### Post date: [August 27, 2026, 11:23am UTC](https://foil.zone/t/another-waist-assist/27074/3 "2026-08-27T11:23:20Z")
I printed some abs parts and “Welded” them to de box using acetone. I used four M4x25mm screws and nuts.
 
stl file: https://drive.google.com/file/d/1hcRbjpvLG2EAiVGxl1ZCCHTp6cezfwXl/view?usp=drive\_link
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### Author:  [@Jezza](https://foil.zone/u/Jezza)
#### Post date: [August 27, 2026, 12:31pm UTC](https://foil.zone/t/another-waist-assist/27074/4 "2026-08-27T12:31:02Z")
> [@mtx](#):
>
> AliExpress ip67 abs box
What size is your box?
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### Author:  [@janefoil](https://foil.zone/u/janefoil)
#### Post date: [August 27, 2026, 5:18pm UTC](https://foil.zone/t/another-waist-assist/27074/5 "2026-08-27T17:18:45Z")
make all the items in the box waterproof, then no worry about water in the box. i think soon or later always a litle water coms in
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### Author:  [@mtx](https://foil.zone/u/mtx)
#### Post date: [August 27, 2026, 9:18pm UTC](https://foil.zone/t/another-waist-assist/27074/6 "2026-08-27T21:18:04Z")
> [@Jezza](#):
>
> What size is your box?
220x170x110. It fits good.
> [@janefoil](#):
>
> make all the items in the box waterproof, then no worry about water in the box. i think soon or later always a litle water coms in
Yes, I still need to think on how to make the batery balance ports watertight.
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### Author:  [@JonathanC](https://foil.zone/u/JonathanC)
#### Post date: [August 28, 2026, 1:05am UTC](https://foil.zone/t/another-waist-assist/27074/7 "2026-08-28T01:05:34Z")
Is the 75200 totally inside the box? Just need to be careful it doesn’t overheat. It may be a good idea to have an external heatsink that it sits against. Overheating, particularly with a back pack is the killer of electronics and battery
These pictures show a 75200 with the case opened and fitted to the outside of the box with marine sealant/adhesive. If you carefully cut the hole you can feed it in from the outside and still have a nice wide flange to seal against the outside of the box
You can then make a little wall and flood the electronics with two part silicone to make sure it’s fully waterproof.
As far as the battery goes, I print a shallow tray and sit the ends of the cells in it and again flood with silicone.
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### Author:  [@mtx](https://foil.zone/u/mtx)
#### Post date: [September 27, 2026, 1:48pm UTC](https://foil.zone/t/another-waist-assist/27074/8 "2026-09-27T13:48:50Z")
Some updates based on your recomendations. Tested and Max temp now is 40 Celsius vs 60.
not the cleanest work but working, next step magicgel
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### Author:  [@S\_Roger](https://foil.zone/u/S_Roger)
#### Post date: [September 27, 2026, 2:47pm UTC](https://foil.zone/t/another-waist-assist/27074/9 "2026-09-27T14:47:19Z")
Interesting to see the vesc on the lid like that. Looks good. Where are you planning magic gel? I’ve used it as potting on a vesc, it’s quite messy and sticky after it sets. Ot at all like silicone. It will also will run a bit and spread out if it’s not in a contained volume