Bicycle Singlespeed Cogs

SInglespeed bicycle cogs modeled to the ANSI standard. Used Machinery's Handbook 27th Edition for for design. These cogs are functional but wouldn't last long when made with plastic materials. Work well for mockups when building a bike and general randomness.

16-22 Teeth.
Has a standard Shimano Freehub center.

See how I modeled it here:
https://trail70engineer.blogspot.com/2017/09/designing-singlespeed-cog-getting-to.html