What is wrong with my bike and how do i fix it?

Question

whenever i pedal backwards on my bike, the chain doesnt move it just hangs and whenver i stop pedalling when moving the chain doesnt move round and i think its because my derailler moves with the chain it isnt stiff

Answer 1

I can't imagine how your chain would be able to move forward normally while riding but not back.  You aren't riding a fixed gear bike or anything are you?

Answer 2

Check the alignment of the derailleur and also check it chain connection for possible bents and stock up chain bushing.

Answer 3

It sounds as though you have stiff links on your chain, although I am having difficulty visualising what you describe.

Answer 4

Dirty cassette, or stretched chain.  Time for the bike shop.

Answer 5

broken