Hello,

I'm really new to CAD and I would like to design a bike chainring, with a narrow wide teeth pattern for myself.

This will probably cost more than buying one from a company but I want to start with a bike related project.

My crankset is in 110 BCD format.

I know that I need to have enough room for 12.7mm between each roller that would be 8mm.

But I need someone to help me, to let me know where I should start from and then how to get the narrow wide teeth pattern.

Thanks in advance