Well I'm no bike expert so I don't know what all the parts are called. The problem is that when i'm just riding normally and I try to put a bit of force to go fast it does the thing as if my gears are changing, the *clunk* thing. I'm not changing gears so I have no idea what the problem is. This is really annoying because it's hard for me to ride up hills because I can't expect the *clunk*. Please please help.
Wow, thank you guys heaps i'm gonna go see if I can fix it now.
Wow, thank you guys heaps i'm gonna go see if I can fix it now.