I snapped my rear derailleur hanger last night and ended up having to shorten the chain and do the old single speed trick. I though I had an extra hanger on hand, but it seems that I was mistaken. My LBS doesnít have the hanger I need, so I just placed an order for a new one. Thing is, I donít want to miss out on my ride tomorrow night so I think I am just going to run my rig as a single speed. That said are there any tricks or suggestions on keeping the chain from dropping/skipping down to a lower gear (from the one I have the chain setup on) on the rear cassette?