When I first built my 550, I had trouble at first figuring out the best way to weigh it. I know there's tons of bathroom scales my 550 would fit on, but there weren't many (or any) of those I found that were accurate down to 1g (or even 10g). And then I found this: http://www.amazon.com/WeiHeng%C2%AE-Dig ... B00972LOUM
I just slide the little hook up under one of the frame bars/braces in the arm about halfway between body and motor and lift it off the ground...easy peasy. It should work on any part of the airframe that can support all the weight. (also a way to test to make sure your battery is securely in place)
If you want to use a strap instead of a hook, you can get one with that instead: http://www.amazon.com/WeiHeng%C2%AE-Ele ... B003L1YZ4W
I just slide the little hook up under one of the frame bars/braces in the arm about halfway between body and motor and lift it off the ground...easy peasy. It should work on any part of the airframe that can support all the weight. (also a way to test to make sure your battery is securely in place)
If you want to use a strap instead of a hook, you can get one with that instead: http://www.amazon.com/WeiHeng%C2%AE-Ele ... B003L1YZ4W