I have had this issue and it was due to worn teeth, but I was riding fixed, never heard of it happening on a freewheel (unless its really old?) can you see where it gets thrown? I spent ages in the park going in circles, sprinting up and down to see if it threw it on the chain ring or the cog.
I have had this issue and it was due to worn teeth, but I was riding fixed, never heard of it happening on a freewheel (unless its really old?) can you see where it gets thrown? I spent ages in the park going in circles, sprinting up and down to see if it threw it on the chain ring or the cog.
Also how old is your chain?