The 200A rated VESC clones we tested could not even measure 200A. It’s not all about FET capabilities. Without a perfect thermal design and the capabilities to measure the currents preciseley such ESCs can’t meet the rating they are advertized at.
Continous means 200A motor and 200A battery current for 30 mins.
At full duty cycle 200 motor amps!
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Sorry to say, that i am too stupid to understand how everything works, but:
Original Vesc six+ and 120A Motorcurrent Limit there are about 60A Batterycurrent at static thrust test with 80100.
Same Motor, Flipsky 200A Vesc, 120A Motorcurrent i get same Batterycurrent (60A)
Pushing the Motorcurrent to 180A, i get 90A Batterycurrent and much higher rpm.
Maybe 180A cant be measured, maybe the Logs lie, i dont know. Maybe everything will explode. As i said, i dont understand how it works.
But it seems to work.
And serious, nobody needs 200A Continous 30min. That would be at least 100Ah or 12s33p. 
Yes! Suppliers should adhere to a realistic standard when rating their designs. There should be a professional certification standard that can be stamped and recorded. International toy-motor-driver commission.
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It depends on duty cycle. At 50% duty cycle, (half the possible load), 60 Batt Amps can deliver 120 Motor Amps. That’s because you run the motor at half the voltage.
Example:
Batt side: 50V battery X 60 A = 3000W
Motor side: 25V motor X 120A = 3000W
Both sides always equal.
At 100% duty cycle : Motor Amps = Batt Amps.
If you want max power from your system, Batt Amps need to be set as high as Motor Amps.
Otherwise the VESC Firmware will gradually depower the system to protect your battery from overdrain. You will get good startup power, but you loose the power with more speed quickly.
For a Hydrofoil you need good startup power to get you out of the water at a certain Speed X.
If Batt Amps are set too low, you loose power to quickly and struggle to get to speed.
If you want to test your ESC you need to run the FOC open loop command at full Amps and little RPM. Then you look at the temperature rise and see how fast it climbs.
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I have seen this on Video, but didnt understand how he did.
Ist it possible to do this via commandline in Android App?
I would test, If someone tells me how 
You can list all commands via the “help” command. There are also three dot’s next to send. That lists some options
foc_openloop [200A] [50]
You can also use your phone as a bridge to the VESC if you want to run the desktop VESC -Tool and do not want to use a cable. Developer >> TCP bridge. Computer and Phone need to be on the same WiFi network.
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Hmm, 200A, 40V, 8kW? I’ll fry my motor?
I guess the 50 is erpm? I’ll need to go for at least 600, so my motor spins a bit and gets cooled better
50 erpm : 7rpm : 0.05v , 10w ? (heat) on the motor ? Motor tested in the water …
Ah ok, so the current ist circleing around Motor and Vesc with low voltage…
Yes something like that , maybe the Ri of the motor needs to be used to calculate heat ? P=rI2 so more like 600w… don’t know, never done it
The motor needs cooling. You will burn all the energy in the motor. We either take big motors or a motor submerged in water.
Stupid 80100 makes trouble with starting in openloop. I guess i have to try and tweak some settings, and i guess its the same issue, like @superlefax has.
Anyway, finally i could manage to run the Motor in low rpm and high current. 190A was max, was i tried. Lucky me, no smoke.
Limited to 180A, cooling was on, it took about 50sec, until VESC reached 75° (i lowered temp cutoff) and limited current.
The current has settled at 155 amps.
Conclusion: 200A Continous: Impossible. (as long you dont cool with liquid Nitrogene 
)
155A Continous is possible, short peaks with 190A too.
With no cooling 75A continous was possible. One day during riding my cooling failed, and it was still possible to ride. But it was no fun. To restart, i had to suck water through my cooling, to cool the vesc for necessary current to get on foiling
Overall: I only need 120A to get on foil, 60-90A for normal cruising/riding.
For me, this vesc works fine with cooling. And how this works, i dont bother any more. Motorcurrent Limit to 150A and i got plenty of spare punch
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Last year I did some test with 30w Peltier cell and classic esc water cooling plate , I was able to keep the water freezed on top easily , I could fit 4 smalls cells in série (48v )and 2 water cooling on a vesc 6 size 
Thank you for testing ! Great results !
Did anyone try this vesc on 14s?
12s for most vesc, more : trampa 75/300, a200s
No spikes over 60v , if you have 14s just charge them to 4.0v if possible
Never recorded spikes on my trampa
I’m assuming you feel the same way about the seal 300a ESC by maytech/flipsky? Would be risky to run it on 14s?
The seal 300a is designed for 14s. They mention max 75v spikes on their alibaba page. That’s for the reacher tech.
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Interesting! On maytech and flipsky they rate it at 60v maximum! Which is pretty close to the max voltage of a 14s pack!
Might be a nominal voltage? I trust the guys from reacher tech so I’m going to run mine on 14s.
That’s good! Do you know anyone who ran it on 14s before?