4 scales for accurate balancing of a Quad

[Taz85268]

I was wondering if anyone had any information as to if a quad could be accurately balanced about the COG using 4 digital scales, one being on the end of each of the four arms.

Would the scales all measure different weights if, say a battery was placed off-center or would they all measure the average weight equally?

Just a thought for possibly getting accurate COG right when adding new bits to my quadcopter.

 

[Old Man]

In theory the scales should note any imbalance. It works when establishing the weights on an airplane's landing gear.

 

[glider]

It works for a Y configuration as it has 3 points, but not for a quad because the weight cannot be measured accurately due to there being 4 points of contact. The planes of both the scales and the 4 points on the quadcopter would necessarily need to be "perfect".

That said, scales are exactly what I use on Y6's

 

[JoeBob]

You could try 2 scales under opposite corners. Move things around until it balances on 2 feet, and you should be dang close to perfect. Heck, don't bother with scales. Balance one diagonal first, then balance the other diagonal and you'll be good.