this post is mostly for dylan's sake. he was the unfortunate being that answered the phone when i was calling around asking about locking hubs. now its all pretty clear how the whole thing works but when things are making strange noises on your only form of transportation in a town where you know no one, it gets me nervous.
i am sure you can see the cover on the left and directly in the center is the outer gear, between those things is the cam and spring that moves it all around.