weird sprocket teeth wear?
I noticed that my rear spocket had weird teeth wear after I estimated about 3000 miles on my coaster brake trek that was causing sounds from my bottom bracket.
After I greased my bottom bracket and replaced my rear wheel I still used my original rear sprocket(gear) because I replaced my chain in time,but after closer examination I notice on the inside of the teeth where the top of the chain rollers would be is a point,like when the chain rolls off the rear sprocket it would cause a sound from most of the teeth,from rolling over the points.
I turned the original gear over,despite the chainline a little off,it doesnt do it any more.
Is this weird sprocket wear?it would appear that the chain was crushing the insides of the metal sprocket creating a point on the inside of the teeth(best I could describe it).The front crank is fine.