Isn't "sprocket" the correct name for the thing we commonly call a cog, where "cog" correctly refers to a tooth on a sprocket or gear? That was my understanding, although "cog" and "sprocket" are now used interchangeably.
Mitch Harris Little Rock Canyon, Utah, USA
Sent from my iPhone
On May 17, 2009, at 2:26 PM, Mark Fulton <markfulton5@mac.com> wrote:
> When I was racing motorcycles, all we had were sprockets. Front and
> rear sprockets. Unlike on-topic bicycles, the motorcycle drive
> sprockets were the little ones.They looked a lot like cogs.
>
> Mark Fulton
> Redwood City
> California
> USA