That is also a great idea. I will try. Thanks to you and to you sat_be once again.
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What was your specific problem on the water?
From the motor stats you could significantly increase your limits.
I run my 6384 at 120a and 180a max.
With your motor you should easily be able to go 150/225 I guess.
I cant open the limits due to the vesc, which is 100A vesc. But my issue is that I am far below this limit. So either the rootcause is by physics/prop or vesc application/hw issue. Sat_be comment is clearly showing that the prop is not the issue. I assume the probability of wrong tuning is much higher than a hw issue, so I need to find the rootcause in the vesc application.
Do you know how you setup your remote?
My VX3 does (err did, RIP) display battery AMPs. This is defined somewhere in the APP config.
43A battery current is not unusual with 96A motor current.
Again, what is your specific issue on the water?
I have my limits set to 120/160.and the max I get to with my foil assist board and fully charged batteries is around 38A battery amps to get up on my Axis 939 and 84kg.
Also are you sure you are limited to 100A motor current? That does not sound right.
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Hi Jan, thanks for commenting again. The 100A limitation is at least what flipsky wrote on their webpage for the vesc:
Thanks for the hint with the vx3 current, that it might could be battery current. (I did not set up with the wiring to the receiver, I just set up what is possible to set up on the display on the remote)
In the the end what happened in the water is, that when I press down the trigger for 10s and laying on the board, I do not get to the speed which is needed to be able to fly. The remote is showing ~43A while doing this.
I increased now the motor limit to 120A, abs. max to 170A and battery current to 90 A. Tomorrow I will try again if it is showing now more than 43A. If yes, I will increase the motor current in vesc till I am able to fly and hope, that the vesc will hold for some time.
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I have the same ESC and motor, I can upload somehow my my motor configuration file that you can load onto the ESC if you still have problems. You would just have to change battery from 14s.
I have 80 amp motor max, 160 absolute max and battery at 60. I have gone through some logs and can give you performance stats if you want to help with your settings.
It sounds like you are using UART, I use PPM which is always a good place to start for simplicity, and UART port is used for the Bluetooth for logging and changing settings while out.
I have had endless problems and hopefully you get it sorted, I’m off to blast through 3 sets of batteries this afternoon… while it still works.
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Hi @ZedMan, thanks for your support. Which wing size are you using and in case you want to tell, also your riders weight would interest me?
Your config file would be great, then I will compare the file variables one by one.
The PPM I will try next, but then I will not get any motor values back on the transmitter and it gets a bit harder to see what happens.
I’m 78 kg in weight, with a Sabfoil 950 front wing which is 1350 cm2 and medium aspect ratio, on a 105lt board which needed 2 cm of shim on the mast for the motor to work.
80 amp max is enough power to get on foil, even into the wind and chop.
I use a Flipsky remote for speed, my Garmin watch for distance and I have used VESC Tool on my phone taped to the board to monitor real time stats, but now I log runs. The motor runs pretty well and the data isn’t going to change anything, but I was concerned about cooling.
Now I’m recording voltage at the end to make sure battery use is optimised and safe, and monitoring my older batteries. But the logs are still interesting for now.
Send me a direct message with an email and I will reply and attach the config files. I’ll send some logs as well that you can view in VESC Tool.
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Try the Vescdash app for Garmin. Will connect to a vesc and record vesc data on the watch. Maybe not as good for post ride analysis as a full vesc file, but it is convenient
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Sounds good, but I just have the base level Instinct 2.
I also paraglide, so it is tempting to upgrade.
Thanks for the info.
It is working with the increased phase current from 95 to 120A. The displayed bat current while riding gets higher nearly the same amount (from 43 to 65A). This is sufficient enough for me to come out of the water. I haven’t driven the pack to low voltage, so I do not know yet if it will work also there.
Also a comparisson with ZedMan config files I will do to see if there is something to improve.
Thank you all.
You can check my logs to see motor amps and battery amps relationship with speed.
I had a nightmare post thread here over battery voltage changes but same motor amps for performance with all sorts of unclear answers.
I learnt from ChatGpt, that different sides of the ESC do different things with amps, which makes sense as the battery just gives power and the motor needs current for the windings and magnets to work, and is also AC.
From memory 80 motor amps is around 40 battery amps and my cruise at 20 km/h is 35 motor amps and 22 battery amps. So when I went for 8s to 14s batteries the max motor amps stayed the same, for same power, but a bit more punchy.
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