I made this platform for an integrated mast. Quick-release clips made of Tpu. Easy to install and quickly removed for maintenance. If anyone is interested, write your email in private messages and I will share the models.
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A good option if you don’t want to buy a new set of screws +10 mm
Would love to know where you landed on materials for sealing off the esc and other electronics, as well as for potting the batteries.
Currently I’ve landed on expensive potting epoxy for the batteries (peace of mind). And a combination of rtv and other silicones for the electronics to save costs and be serviceable. Maybe conformal coating them first too if that’s not overkill.
I am not a big expert in sealing. I prefer silicone compound designed for sealing junction boxes. I had a not very successful experience with epoxy resin. Cracks appeared and I had to literally smash the battery with a hammer to get the cells out.
Today I had a long session on flat water. I charged the foil assistant batteries several times from the big battery of the tow boogie. In e-foil mode I managed to accelerate to 40 km/h. The speed was measured by a Samsung watch, so the readings may not be entirely accurate. However, judging by the pain from the fall, it was quite high). The 12 A/h battery completely discharged in 11 minutes during the speed run.
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Yikes. Which epoxy was it? I’m considering placing an expensive order for a specific potting polyurethane epoxy for peace of mind. At least for the battery. I figure I’ll use it on other projects since I’ll have do much of it 
I used LE-828 epoxy resin
Curious if you’ve @rttn had to choose any special placement for the antenna? I’m about to pot my components in which will limit my ability to test different positions. I’m concerned a bit since my inflatable boards have carbon plates between me and the under board box. Not that FD users seem to be having issues. Just curious what other builders have been noticing.
I’ve been looking for way to seal my batteries and Rx asked a mate of mine he’s a drone expert and built some underwater drones and he uses this stuff has anyone tried this product before?
A long history on this forum, with alternatives sometimes:
When the dryer turned off and the plastic (PPA-CF) got a little damp…
You can dry it at 80 degrees Celsius for 8 hours, but if you need it quickly, preheat the oven to 120 degrees and dry for an hour.
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I have used a similar liquid tape, only in aerosol form. I would not do a complete waterproofing of the battery with such a product. Again, I will note that I am not a big expert in this.
Interesting can I ask why not? Is it durability? I would think this would make a lighter pack . And for a flexible belt pack for assist it would be ideal. I’ll do some tests to see how it goes.
On different topic The battery pack I got from local battery builder is going well but batteries I bought from china myself has failed one cell in pack is dead. Totally got ripped off buying these cells.
Has anyone had anyone had any luck with these cells?
this is a timely reminder that there are plenty of counterfeit cells, and many dodgy sellers on aliexpress.
Fake cell wraps, refurbished cells, lots of creativity in the world of crooks… Unfortunately that comes with a massive risk for the end user.
Use only legit, trusted vendors when your life depends on it.
My makita batteries need refurbishing I’ll be using those batteries for that. But I need another pack. Just wondering if I should just use my local supplier he gets molicel direct off company
If you are based in Europe nkon.nl is reliable supplier, ordered several times from them, some of my packs work for 3Y now.
I’m not an expert at cells. But to be fair, this can happen with legit single cells as well. Happened with one of my 50s cells from NKON after pack was complete and tested.
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Nkon is not such a reputable source, just one of the best available for end users in EU.
I hand my fait share of issues with nkon, with cells drop different dates, batch, plants… impossible to make a serial production. Akkuteille is ok.
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Nice builds! For epoxy maybe consider RT-125 from Resin Tech. This is what we use to pot our electronics in our torque sensors that run on LMH and GT3 cars in LeMans and other race series. It is designed as a loom/boot sealant but it is flexible and can handle heat in the 110C-150C range. Its also used in our probe torque sensors that are in direct contact with transmission fluid at 150C running on some F1 cars.
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