I am new to this website. I am also new to the terms, and names related to bicycle components.
I have a bicycle called a Burner SuperCycle.
I went to the repair shop twice in the last year because things started breaking down. I am not using my bike in an extreme environment. Just in the street of my city. What I have noticed is, after a while, I start hearing a strange noise when I pedal. And with time it gets worse and worse and now it's just too much.
A couple days ago I decided to investigate by putting my bicycle upside-down and pedaling manually. There was no strange noise but the rear hub/cassette was moving up and down in a circular manner on the little bar that goes trough it (I don't know the name, sorry).
So I have a strong feeling this is where the sound is coming from.
What should I do next? Take off the whole wheel? Tighten up something?