I just took that video of my front derailleur. What happens is my chain rubs along the inside of my derailleur on both sides on the 3rd and 2nd gear. When i shift into my 1st gear on the bike, the tip of the derailleur goes into my tire threads(?) and it actually caused me to get into an accident two days ago and messed up my wrist pretty bad. I own a Shwinn S60DSX: and the derailleur is a "Shimano Tourney"