I have a PEUGEOT 103V 1980.
I change the rear sproket of my moped, it was a 56 tooth, and i change for 40 t.
I win 7km/h. I remove 3 link on my chain.
I have a small problem, now something knocking around the crank gear ? It look is the chain but i'm not sure ? It's only when i give gas is knock !???