Im goint to give it a go, if i cross thread it on and then weal it on it should work . i have spare in my shed that i can make it with, im going to try it. My bike is heavy anyway so it doesn't really bother me. and weight is not a issue for me to be honest, and i have both trousers tucked in when riding anyway. The actual main idea has gone in this topic, how many people crash and hurt them selves due to chain snapping and sudden loose drive-train, this will eliminate the problem, unless both the chains snap then you are buggered.