Eli5: Why do bicycle disk breaks have “%” and “V”s stamped through them. Is this the most efficient way of displacing heat / reducing cost ( materials ) or does it just look cool?

Question

Eli5: Why do bicycle disk breaks have “%” and “V”s stamped through them. Is this the most efficient way of displacing heat / reducing cost ( materials ) or does it just look cool?

In: Engineering

Answer 1

>Why do bicycle disk breaks have “%” and “V”s stamped through them.

Clearly it is the “%” and “V”s that caused the disk to break. It works like the perforations on a ticket stub. The paper of the ticket tears at the perforations. The disk of the bicycle is going to break at the perforations too.