Hi,
I want to use the Mini V6.8 ESC from flipsky (Software Version 5.02) together with a 6384 motor for foil assist.
The problem:
When using current mode, the motor spins up to max RPM at low throttle when in air.
In duty cycle mode the control behavior is better. But there is a small brake current when the throttle is in neutral (about 0.1A).
I don’t like both behaviors.
Duty cycle control with no brake current would be nice but I did not found a solution for this.
How did You solved this problem for VESC in foil assit mode?
Also that is normal and can not really be changed.
In your case current control will be the best option, as said in water (under load) it will work fine. You can limit ERPM to prevent the motor spinning to crazy high RPM in air.
It performs great. With 12S I have more power than enough. No problems with heat or current (I use the FD three blade prop - black).
But for foil assist mode use duty cycle control. Current control may work for E foils and skateboards but is not nice for foil assist (when the prop has sometimes no load).
I’m interested to know what runtime are you getting and what pack size/Wh? I find on a 12S2P (p42A = 372Wh) pack I’m getting only 16 minutes… and that includes catching a few waves. To be fair this pack has had a lot of use and the cells heat up - I am about to build a new pack (12S2P) using RS50 cells which can handle more current so shouldnt heat up so should give more runtime before sagging (also at 5A/cell that’s 432Wh).
I’m curious as I am running the same ESC and the Flipsky water proof 6484… but using my own printed (UV/SLA) 3-blade folding prop. I am 81kg using Surge 1010 foil.
Sorry I don’t have exact runtime data. But my cells (Molicell P45B in 2P or 3P) stay cool. (OK water temperature in the north of Germany is rather cool too).
The prop makes a huge difference. The FD three blade prop is great. Since I use it I had no more problems with heat. I feel also a huge difference when the prop is at the water surface. It still has good grip/thrust when half out of the water.
Thanks, I’ve used a friends FD assist max a few times… I really didn’t like it… a lot less power than mine… not sure if thats down to ESC detuning, prop or FD’s 11S vs my 12S battery. However, he gets way more runtime… so I guess that is really the better option… something I’m trying to figure out how to do (other than simply more battery).
If you can get up with less power, why do you prefer having more available?
If you use more power than actually needed, you will use up run time for no real gain. I have limited power output in VESC to 2kw and that has significantly increased my run time.