# Electrical Help?
**URL:** https://foil.zone/t/electrical-help/11193
**Category:** Build, Repair & Mod
**Created:** [December 11, 2020, 4:44pm UTC](https://foil.zone/t/electrical-help/11193 "2020-12-11T16:44:55Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@cameron](https://foil.zone/u/cameron)
#### Post date: [December 11, 2020, 4:44pm UTC](https://foil.zone/t/electrical-help/11193/1 "2020-12-11T16:44:55Z")
Hi guys - I’ve been following this link to build my own motor:
> **[Homemade ELECTRIC Hydrofoil E-foil (Hiorth)](https://www.instructables.com/Building-an-ELECTRICAL-Hydrofoil-Part-12/)**
>
> Homemade ELECTRIC Hydrofoil E-foil (Hiorth): We decided to share our progress on building an electrical hydrofoil. Here you will find our V1 design, part list and 3d files.
> We want to make it easier for everyone to build their own, as its a lot of...
and so far so good, but I need some help when it comes to the electronics.
I have the motor, a speed controller, and a battery to begin with.
1 - how do I know which color wires from the motor go into which ESC blue wires? (does it matter?)
2- i assume the red and black from the ESC go into the battery… but what the heck are those other two connectors?
3- What is a good Remote to get, and how do I connect it to this situation?
4- what is the spare wire on the battery? I’m assuming a charger connector?
5- how do you find / where do you buy electrical connectors for these wires?
Plz talk to me as though I’m smart but clueless about this stuff…🙂
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### Author:  [@DrT](https://foil.zone/u/DrT)
#### Post date: [December 11, 2020, 5:09pm UTC](https://foil.zone/t/electrical-help/11193/3 "2020-12-11T17:09:41Z")
1. Doesn’t matter, you can change the motor spinning direction with exchanging 2 wires
2. correct, the other two are probably for powering the esc and to connect the remote should be declared in the esc datasheet
3. check out the maytech one its pretty good, you can also support a guy here on the forum he developped his own remote with cool features, check [New waterproof remote (Vincent’s build)](https://foil.zone/t/new-waterproof-remote-vincents-build/8914)
4. the white connector on the battery is to observe every cell while charging or to put a beeper while using it so you know when its empty
5. which one you mean ? google XT90, gold connector maybe this already helps
Hopefully this helped 😉
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### Author:  [@cameron](https://foil.zone/u/cameron)
#### Post date: [December 11, 2020, 11:18pm UTC](https://foil.zone/t/electrical-help/11193/4 "2020-12-11T23:18:55Z")
Totally helped, thank you.
I was actually wondering about those connections on the motor. What are they called… and where can i get them so i can connect the ESC…?
And does the ESC need its own separate power supply?
thanks people!!
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### Author:  [@Alexandre](https://foil.zone/u/Alexandre)
#### Post date: [December 11, 2020, 11:33pm UTC](https://foil.zone/t/electrical-help/11193/5 "2020-12-11T23:33:46Z")
8mm bullet connectors for the motor
XT90 ( as 90A)
> **[Radio Control Planes, Drones, Cars, FPV, Quadcopters and more - Hobbyking](https://hobbyking.com)**
>
> Hobbyking - the world's No1 Online Hobby Store. We stock a huge selection of RC products from Planes right through to Drones and all accessories. Visit Us Today.
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### Author:  [@DrT](https://foil.zone/u/DrT)
#### Post date: [December 11, 2020, 11:48pm UTC](https://foil.zone/t/electrical-help/11193/6 "2020-12-11T23:48:07Z")
There are 2 different kinds of ESC’s some have BEC (battery eleminator circuit) and others don’t, I don’t know your specific one but the 2 cables indicate it doesn’t have it and you need to supply extra 5V to it and have the same ground potential, best check the specs of your ESC.
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### Author:  [@DrT](https://foil.zone/u/DrT)
#### Post date: [December 12, 2020, 12:08am UTC](https://foil.zone/t/electrical-help/11193/7 "2020-12-12T00:08:43Z")
okay sorry it has a BEC! check this link could be helpful: [SEAKING V3 User Manual & Trouble shooting - HOBBYWING North America](https://www.hobbywingdirect.com/collections/seaking-v3-manual)
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### Author:  [@cameron](https://foil.zone/u/cameron)
#### Post date: [December 12, 2020, 12:20am UTC](https://foil.zone/t/electrical-help/11193/8 "2020-12-12T00:20:43Z")
Yes, I really should read the f’ing manual!!! Sorry. Once i ordered the motor from China i assumed i’d be doing everything without manuals, but low and behold, there is one for the ESC!
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### Author:  [@DrT](https://foil.zone/u/DrT)
#### Post date: [December 12, 2020, 12:32am UTC](https://foil.zone/t/electrical-help/11193/9 "2020-12-12T00:32:11Z")
in this case you really shoul read it! ^^ it can be dangerous and things can blow up if you do something wrong! you probably also find some helpful youtube videos!
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### Author:  [@SoEFoil](https://foil.zone/u/SoEFoil)
#### Post date: [December 13, 2020, 10:55pm UTC](https://foil.zone/t/electrical-help/11193/10 "2020-12-13T22:55:28Z")
If not too late, get a waterproof motor in the 100 to 120kv that doesn’t need a reduction gear,
Maytech 65150, HGL-Tech or Flipsky have that.
Simple projects with list of materials:
Using this waterproof motor:
> [@Efoil V3 - STL files for Gong foil and Flipsky motor 12mm - Parts list - Schematics](https://foil.zone/t/efoil-v3-stl-files-for-gong-foil-and-flipsky-motor-12mm-parts-list-schematics/9610):
>
> Presentation of my last efoil, this is my third efoil. The goal was on this model to make it simple and fast and to be able to use the aircraft in wingfoil and Efoil. it works very well, the front wing is very easy to ride and consumes only 23A (foil out of the water) description: Motor 120kv flipsky, VESC6 flipsky, remote mayteck V2, foil gong XL curve, board homemade in carbon, battery 12S 22000 mah, and water pump 5V [[E-foil V3 (monteynard sep 2020)] ](https://www.youtube.com/watch?v=StjQPc-yYrs)[[Efoil V3 suite] …](https://www.youtube.com/watch?v=qUiklsb_Kao)
Using a water cooled motor waterproofed with epoxy:
> [@Volker's second build (shorty)](https://foil.zone/t/volkers-second-build-shorty/7887):
>
> Total 19,1kg 118cm \* 55cm \* 9,5cm RL foil APS 63100 12s10p Samsung Q30’s AS150 Antispark as connectors and switch Flipsky Vesc 200A Metr dongle Maytech remote Ampere/Watt/Volt meter 2,83€ cheap water Pump KISS. Thats all. The battery compartment ist big enough for my 12s16p, then i get 22,4kg total. Many steps like motor waterproofing, Battery build are similar to my [first build](https://efoil.builders/t/volker-s-build-80100-18650-30q/4796/1)