Originally Posted by
CliftonGK1
...For a randonneur it can become a huge concern, when additional drag might decrease a rider's speed by 0.2mph...Over the course of a 40hr brevet, it becomes 30 minutes, which could mean the difference between a 600k medal and a DNF.
OK, I'll take your 0.2mph with the light on but I do want to note my light has a switch, I wouldn't leave it on for 40hrs....
I need a heavier bike with more drag so mere mortal riders can keep up with me.