ESCs on arms get hit by props. ESCs in the frame leave wires to get chopped up on the arms. There’s a simple solution to both of these problems, and it involves a resource that we all have in abundance: broken props.
Lots more build tips in this playlist: https://www.youtube.com/playlist?list=PLwoDb7WF6c8l0zUqJU-Ih0b1VmuCoOjeT
All three of the quads in my recent RTF roundup have this problem. The FlyPro Jaguar and the QQ190 RTF put the ESCs in the stack, leaving naked wires on the arms. The Shuriken X1 puts the ESCs on the arms, but they’re so close to the motors that the wires get hit by the props.
My ready-to-fly racing drone build/tune/review playlist is here: https://www.youtube.com/playlist?list=PLwoDb7WF6c8k7l4M0HAKV1ITtt_tOvRmN