On Tue, 27 Mar 2018 13:47:58 -0700, Joerg
wrote:

Many folks with other freehubs don't need to holler "on your left"
when rolling downhill because you can hear the GRRRR.

It's amazing how loud some freehubs are. It's like rattling a playing
card against the spokes, like we did as kids to pretend we were on
motorcycles. A card and a clothespin, vroom!