Arducopter ESC numbers in log maping to actual motors

Hello everyone,

I have my copter flying, but…it seems there is some problem with COG, as 2 motors need to work harder than the other 2.

My frame type is “BetaFlightXReversed”.

However… I am not sure which pair is loaded more. I see in log 4 esc as esc[0]…esc[3], but I am not sure how this indexing is mapped to actual motors. Was looking for that info briefly but nothing that explais this.

If I’m reading it correctly, you’re either hovering into the wind, or the quad is nose heavy.

esc[0] = Motor 1 (test B)
esc[1] = Motor 2 (test A)

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hmmm… nose heavy is last thing I would expect (was actually suspecting the opposite), as nose basically has only camera and GPS, and whole battery is moved back(big brick under the frame).

I get it, but it may be deceiving. (or I could be flat out wrong) Draw an x between the four motors. Looking at the photo I’m guessing the center point of the motors will be around the back of that white module on the top, or the attachment point of the rear arms. Then just see how it balances relative to that point.

Edit, and I did get the wind wrong. You’d be hovering with a tail wind.

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I did some measurements and… damn… You were right. Geometric center between motors is so far back, much more than I anticipated. Put a small screw so I can hang it and check the balance.

Thanks for explanation and pointing that.

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