My Mark V used to be super silent until i got some new wheels. I bought Deep V's and Formulas (of course). Ever since I put them on my rear wheel makes this weird noise. I keep my chain always at around 1/2 to an 1" of play so its not too tight. To top it off, the other night my came off... Luckily I was near the subway. Someone please help me.
Also, my chain gets loose and tight when my crank is in different positions. Someone help!
Noob questions: My chainline looks straight but how do I know if it really is or not?
There is also a possibility that your chainring or cog is bent out of shape. Also, your chain could be stretched or not pulled to correct tension, generally it is a good idea to have a good amount of tension to avoid having your chain come off while riding.