I am new to track bikes and got myself a Dolan Pre-Cursa which I have been using to learn to ride fixed and also learn to work on bikes.
I had noticed that my chain is a bit loud and after reading some posts on here I concluded that it is because my chain-line is not completely straight.
I have attached pictures of what my rear axle currently looks like.
My question is regarding the piece highlighted in red in the pictures.
-What is the function of this nut? Do I need to tighten something with it?
-Can I possibly use it to do slight adjustments to the chain-line (having the nut on one side flush and the other side a bit spaced out)?
-How is chain-line usually adjusted?
I am sorry if some of my questions seem a bit stupid!