as i have been been changing chains over the few months nufin major like 3 a day charging silly money so im not advertising lol
i have found that the bottom sprocket is being eaton up ( the sprocket teeth are becoming thin if i had a pic it would be make more sense) i checked the chain with a new one and it doesnt appear to have stretched so im thinking that the worn sprocket cause the rattle.
also im thinking how can they where when you can recently see they have been changed because the colours are still on the chain
i could be chattin sh*t but you know 😉