Originally Posted by
Looigi
If it's adjusted properly and working, you won't get a dropped chain. It prevents it in the first place.
Installing it properly is key. If properly installed, the K-Edge is not gonna leave enough room for the chain to drop into. The chain should bump against it before it can find a hole to drop into.
The smallest space between the chain when on the smallest innermost ring and the chain deflector is usually the installation instruction for those kind of contraptions..