Hello, I think I have a hardware cutoff on my 75100 v2 pro aluminum ; I’m getting cutoffs on peak currents that should be adding 160 amps, despite the absolute maximum current being set to 190 amps. On my old setup, I solved the problem when I found a parameter distribution that gave me a maximum peak current of 144 amps, but I can’t seem to get that on my new one. Any ideas? My current parameters are: battery current 65 amps, motor current 190 amps with an ABS limit of 95%.
Thank you
Not sure what you mean with ABS limit 95%
In my experience the ABS MAX current should be 1.5x the max motor current for reliable operation
Yes I am agrée with you , but it seems that the causes of my cutoff are the peaks over 150 amp ;
I had that thing with my last set up too ; everything was ok when the peaks were not over 150 amp
For the 95% , it is my maximum scale current , but i am agrée this value don’t have any sensé
I am gonna try to put absolute max at 180 amp with slow abs current l limit enable and max current scale at 83%
But if you have other idea …
Why would you lower the scale percentage? As it says in the VESC tool, the scale percentage is ONLY to enable lowering the abs max parameter while keeping the old, higher value for reference.
Can you please screenshot your parameters? Right now, what you told us is:
Max battery current: 65 amps
Motor current: UNKNOWN (you said motor current but you meant abs max)
Abs max: 190 amps (real value 190 * 95% = 180 amps)
Abs max scaling: 95% (this should be 100% and just change the abs max directly)
My motor current is 120amp, my hypothesis is :there is an hardware cutoff over 150 amp with the 75100 so I am looking for parameters that allow me to avoid peaks that exceed 150 amps.
I cannot set an absolute max current of 150 amps because I want to keep the motor current at 120 amps.
So, I set the absolute maximum to 180 amps and I adjust the maximum scale to achieve peaks below 150 amps.
Wrong idea ?
What I mean is that I don’t think the scale works how you think it works. The scale adjusts the abs max value: so if there is an abs max of 180 amps and the scale is 50%, the actual abs max value is 90 amps.
See the image:
This parameter is basically useless for normal use because it doesn’t really do anything.
Solution to your problem:
1: Set the absolute maximum current to 200 amps. This is the value recommended by Flipsky. Set the scale to 100%.
2: If that still gives you faults/cutting off, do NOT increase the max current because something is likely wrong with your setup (either bad detection/similar software error or bad hardware or it just can’t handle the current.) In that case, come back and post more detail about your setup so we can try to fix it.
(Note: To see the ACTUAL current it’s tripping at, type “faults” in the VESC terminal while it’s connected. This would show you the fault info which you could screenshot.)
Ok , I will do that ;
Thank you for the tips with « terminal »
Come back soon 
Flipsky tells you to set the absolute max to 200A. The 75100 has a peak current of 150A so will be fine set to 150A. I run my currents at:
Motor: 150A
Battery: 80A
Absolute Max: 200A
I’ve never had a cutoff even on boards as small as 4’6" and 24L even without external cooling.
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Ok,
I only have cut off when I pull the max trigger quicly, when my motor touches the water while foiling (foil assist mode) and I need to regain some speed
if I gradually increase the throttle fully, I don’t experience a cutoff at the moment of the waterstart.
The température of my motor stays under 50 degrees C
Is it possible to have your screenshots app?
Thanks for the screenshots. This is getting a bit trickier–your RT data screens say that you had no fault code, but you say that you got cutting off in that session.
To confirm if it is throwing faults or not, can you try typing “faults” into the terminal after you have had it cutoff? This will confirm if we are actually getting any fault codes thrown.
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I will do that next Time
Why are you running exponential throttle? I run linear. I must dig out my vesc so I can get all the settings for you. Busy with a house move so its in a box somewhere…
With my old setup I found that I had more throttle for waterstart .
But maybe I was wrong ;
Today, I did three things. I lowered my battery current to 60 amps. I increased my absolute maximum current to 250 amps. I modified the curve of my polynomial transmitter with throttle expo at 0. In the end, there were no cutouts, and the peak current was monitored at a maximum of 146 A. I’m not entirely sure what caused it; I think it was my battery current that caused my peaks to drop below 150 A.
Is it possible that my batteries are the cause of these cutouts? I have two types of batteries: 12 S2P Molicel P42a and 12 S3P Samsung 50s.
I’d like a bit more power in flight; I’m just getting enough. What do I need to adjust in my motor current? Or do I necessarily need to increase my battery current?
I Fly with a 30 L ´s board and a foil 950 kujira II,I’m worried I might be a bit limited with my 800.
Hmm
With like 120A motor, 60A battery (@12S this means 2.6kW of power) you should have enough to fly at like 40km/h with a average setup
So if you say you have little power flying, how fast do you want to fly? 
I suggest the 12S battery voltage together with your motor and prop selection may be limiting your speed and that feels like missing power? What propeller pitch and motor kV do you have?
My set up is an assist foil , motor is just 18cm under the board I don’t need speed but a Little more throttle when I Fly ;
I have an 110kv flipsky 6384 , before I had 140kv’s motor and it seems that it easier to water start with the 110kv but I have less speed than the 140kv
I think my propeller pitch is 3cm but it is a G10 propeller not aluminium
Makes sense
110kV has more torque (push) at same current for a similar form factor motor
But will have less speed than 140kV at the same battery voltage
You can do some new fancy overmodulation to “break” this speed limit and make the motor go faster
@sat_be has tried this already I think
Or get a propeller with more pitch
Or more battery voltage
Or go back to 140kV motor
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I use it on my vesc „onewheel“ with fw6.06. With an overmodulation factor 1.15 I get around 10% higher freespin rpm. You can try to add an additional 10A Field weakening, but I‘m not sure if this helps for a propulsion system. Field Weakening is widely used on onewheels, you gain rpm for the price of higher current and lower torque.
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