Crowdfunding Plan for Perfect Parts

efoils – Electric Hydrofoil Surfboards
24

I from the size and appearance analysis, this is nanjing far drive brand, their official web site is http://www.fardriver.com/

25

Just need to look a bit harder :wink:

https://www.aliexpress.com/item/1005003196103189.html?spm=a2g0o.productlist.main.17.4f3f7434X58nVO&algo_pvid=4129ef6e-b136-440b-babc-60277ae43959&algo_exp_id=4129ef6e-b136-440b-babc-60277ae43959-8&pdp_npi=3%40dis!GBP!189.54!189.54!!!!!%402145280e16841512648242036d0749!12000024608687607!sea!UK!0&curPageLogUid=sOTe4DgtMR5v

26

I found these on Aliexpress.
IP 67, nice form factor…
But the price is very different from the one mentioned before.
And another… at least for me, the question arises how to connect to the receiver (surely it can, but it will be additional work).
https://m.aliexpress.com/item/1005003257129618.html?gatewayAdapt=Pc2Msite

27

This price is too exaggerated, Taobao and Alibaba are cheap, there are many Chinese sellers put the goods on Amazon or AliExpress, are in order to earn ten times the difference, I do not know the circuit, wiring forum should have a more professional

28

Today, I had another discovery. I suddenly came to China hydrofoil surfboard Factory. This kind of thing used for battery joint is called waterproof aviation plug. The one-core plug has 25A, 45A and 100A

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29

Your Gerland efoil board at 3450USD complete (MOQ 1) manufactured by Jinhua GI Technology Co Ltd…

Boards look seriously manufactured :
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30

Strangely enough, unlike Taobao, the WEIPU official site doesn’t mention any one-pin connector in the SP21 range. The SP21 range starts at 2 pins : Home - WEIPU

31

1 pin joint because of the practical application is few, this product is produced by many factories, most of them are more than 2 pins

32

Renhotec has them, in two variants. I don’t know the price yet because we are still writing to Tessi…

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33

Taobao prices range from $1.50 to $8

34

What a catalog ! https://www.renhotecpro.com/

35

Those male and female one-pin connectors (Weipu or Renhotec) are used in this 1300usd 58v 35Ah waterproof battery box branded ErayFoil:

36

These things are made in a small factory, you might as well buy the spare parts and make them yourself. This aluminum box doesn’t cost 30 dollars. We can buy a lot of magic 21700p42a batteries here, and a lot of broken down, factory b, a, etc

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37

My idea was to build an electric hydrofoil surfboard and keep it under $1,000

38

With or without hinge, weight is 2.7kg though :worried:

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39

This 316x204mm 14s9p 21700 cell holder reduced to 14s8p would fit into the above box with 330x217mm interior dimensions

https://www.alibaba.com/product-detail/14S9P-Honeycomb-Type-Cell-holder-21700_1600079427845.html?