I have used normal rubber cable 3g2.5 combined with spiral waist leash. Keeps the cable out of the water. Use plastic strips in both ends to offload the cable vs leash stretch.
Overboard 4liter waist bag works great with 12s2p and Flycolor 150A Esc. No cooling needed.
Flycolor 150A is in my opinion the absolute best controller available on Aliexpress. Works right out of the box, no need to configure anything, no problems with overheating and synchronization.
Better than XCross 160? I know people have had problems with XCross but the only issue we have found is that they cut out over approx 2000W. Have used at least 10 and no failures at all with XCross as foil assist.
Each has its own operating conditions. Here are a couple of non-working ones. Brown stain on the mat from the X-Cross that exploded on my desk.
Hi,
Can you please share some more info regarding the coiled leash length, the 3g2.5 cable length and these plastic strips you mentioned?
Would be great to see some pictures of the leash\cable setup
Thanks
I tried a few options, windsurfing waist harness, small backpack and finally a curved rigid plastic as a fabric free backpack. Lightweight and cools more readily because itās more exposed to air and water.
The plastic is 6.4mm Kings Starboard, itās thermosetting HDPE.
Iāve made a pull apart connector from Tpu that houses three 5.5mm AliExpress bullet connectors. It seals well and the Tpu flexibility works much better than the earlier petg version where alignment was super critical.
This connector will not enable direction switch
No, direction switch is set by wiring and programming - means you donāt have to worry about orientation. Just plug it in and no matter the rotation it goes in the right direction.
Sure you can change it with programming. I suppose it is easy with vesc.
But for example blheli32 testing version works only on windows.
Easiest is to swap wires. But round connector does not help here. I use mr60 after cutting the inside notch.
Iāve got two motors and two ābattery boxesā with XCross esc set up. Can mix and match depending on board and how much battery I want. They are all configured the same way. I check before I solder the motors. In the process of creating a small lightweight motor (6354) setup for my downwind board, just finishing carbon tube through the board for short cable access and will set that up with the same direction orientation. Much easier if everything is wired to match.
Hi, man thank you fro sharing. Being on the hunt for the coil cable for a while now, is it possible to know how many A you run on average and during the bursts and if the cable behaves well enough?
Iāve measured original FD2 with 11S3P uses 25A on average and 40-45A during takes offs, which puts 2.5mm2 sections to the limit (on the paper) making it not an easy choice to make
Hello,
Iām always set to 50 amp battery side, I donāt know motor side (X Cross 160 amp ESC)
I took 3G2.5 since the beginning on my foil assists projects like FD. Itās within the limits of the wires but, itās only on short burst and in water environment so colder than if itās was dry.
Has anyone noticed a significant drop in power when moving to the back pack?
Iāve added nearly 1 m of wire to my old assist system, a new motor and a cable joint.
With the box mounted on the deck I could easily efoil on with a 10s 2p battery, while this is not the aim, the new system is just about reaching the speed to start engaging the foil.
I can eliminate the joint by connecting my old system back up and testing, if its not the joint Iāll be a bit stuck.
The esc gets warm but not hot in the back pack as does the joiner, but Iām not sure thats not because of the heat caused by the esc?
What kind of cable do you have? 3x2,5?
With 10S you should take a 3x4. The small cable cross-section creates a heat problem with the current. This leads to a high voltage drop across the cable. This results in less power being delivered to the motor.
Iām using a 3x2.5 at 12s. This also gets a bit warm, but I havenāt noticed any loss of power from the motor.
Hi, @Etiennebzh do you still run this cable on your coil setup, does it overheat?
Iāve tried recently LAPP Spiral 2.5mm version, however running 25-30A in just 30s the temperature raised to 80C+
Iāve ordered this one this week waiting for it to arrive 
On their official website it seems like they also offer 4G4mm2, buts its super thick ~15mm in OD
This seems odd.
How do you test this? Are you talking battery or phase current?
And how long is your cable?
There is no way it should get that hot with 25A motor current.
Hello, the 3G2.5 is already a bit heavy. Itās ok but I wouldnāt go heavier.
I havenāt used my FA since a while now. I prefer tow boogie where I live.
Makes sense, I think eventually most of the DIY builders will end up with the tow boogie. Currently I live in the area where have decent down-winds from time to time and good train connection to come home so assist solution has different use cases 
Still curios if you have actually used this setup and how did the cable perform?
I havenāt found many feedbacks so far on the forum so everything seems like price of gold at this moment 
