[FPV] First run of a new stack without capacitor. ESC goes BOOOM!

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Well, they say "use a capacitor when you fly with 6S batteries".
Here you can see what can happen if you have a powerful ESC and quite agressive motors.

My guess: The caps could not take any more energy from regenerative braking and the voltage went beyond their specs.
One of them finally failed and got a short circiuit, heating up instantly and spreading liquified PCB-copper traces everywhere.

No worries - it was repaired just a few minutes later:
It was just a few caps that blew up.

g3gg0

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I have burned and repaired this xrotor esc more than 7 times .. the problem is betaflight .. don't do this sharp motor powering in test mode .. there will be no problem in the air .. but on desk and test mode Idk why but it burns every time ! I think you just got a capacitor exploded .. easy to fix

salarmansory

The funny part is that the motors continued spinning even after the explosion

rssicrtical

for hours ive done this with various speedybee esc models but never got any to pop

Jake-wlol

G3ggo!!!! I just recognized your name from Magic Lantern - you cracked the 7D! You’re my hero! I did so much awesome stuff with that. You’re a LEGEND! You -would- also be into FPV like me. Hahahaha. Thanks again!!!

MrBlondek

i'll explain what happened in this video:
the guy ran his copter without a smoothing capacitor. this is important, because drones run 4 bldc engines that draw high current due to the effect of impedance also amplified by PWM modulated current draw - so it causes it to consume power in impulse like manner and as we know neither of components can be equal, there will always be a difference, even if it is a smallest bit. so as you saw one of tantalum caps exploded because capacitors actually charge and discharge, this you can think as if a current runs through a capacitor which also causes it to heat, so the weakest tantalum capacitor shorted and lost to the battery in a fraction of a second as a result of a produced heat we see this fire show.

WolfPackReins

I have ruined motors from doing static tests without a load on them. The ESC was up to the task but the motors weren't when not loaded. I suspect the same can be said for ESCs if the motors are up to the load, but the ESC isn't. My guess is the energy that would be normally used to turn the props, the load, is turned into heat instead. Whichever component that is the weakest gets too hot and fails.

hifinsword

Even if you had a capacity, it would still blow.

johnrosner

das exakt gleiche hatte ich auch gestern als ich meine fpv dröhne in beta flight hatte. Das war aber nicht schlimm da ich einfach schlecht gelötet hatte. Durch die Drehung der Motoren hat es wiebriert und so ist der minus xc60 Stecker abgegangen. Dann gab es funken und ich hab die batterie ab gemacht. aber dann habe ich den Kontakt neu gelötet und jetzt geht wieder alles also ist mein fc nicht kaputt

skyfighter

It is recommended that you don't make your drone explode!

dogzer

😂 congratulations finding part to fix the problem you created

bschanneladdy

That's crazy lol... lit up pretty good 🙈😆

TurtleModeFPV

Thanks to this video my channel is starting to pop off lol. It says on YouTube analytics that most people watched my videos from this video

WStreetFleet

My xrotor esc was DOA, gives power to a FC, but no beeps from motors.

albertatlinguasoft

Man u are scaring me im building my first ever fpv drone after dji fpv and I have a 6s build paired up with a 5" quad so why did this happen how do I avoid it.

aciidd

you should not do this rapit throttle change. this test mode is ment for texting direction and if it cuts off on higher throttle. please use correctly

TheBoringReason