Originally Posted by
dabac
Now, here is a major part of your problem on this site - you don't know the words.
I have NO IDEA what part of a bike the TIMELINE would be.
Sheldonbrown.com and the repair section of parktool have pics of ALL the parts of a bike, with names.
Next time, go there FIRST, figure the REAL name of the part that's troubling you, then ask the question.
Save us all a lot of guesswork.
At first I thought it's the cassette but I was mistaken.
The part is like a big screw.