Originally Posted by
cranecamsou
Possible, but not always -
Assuming FB always replaced his chain as necessary, the tooth to tooth spacing of that Shark Fin profile would still match the roller to roller spacing of a new chain.
However, if regular chain replacement was not his thing, then the Shark Fin spacing will have worn to match already stretched chains.....thus causing premature stretching on a new chain.
Static the rollers will fall into the sprocket valleys but under load they will be riding the leading edge of the tooth putting strain on the pins, but some don't be leave that its ok by me. And thats not really FB's chainring I do not think he would ever let something get that way

I know I wouldn't.