Just took a look at a couple of my bikes. The smallest cog on both of them are perfectly clean while the middle cogs show signs of having been in contact with the chains. Long story short is that I very seldom ride in my highest gear. Never on level ground, even when I am sprinting. Fastest sprint I ever did on flat ground was at about 70 kph and even then I wasn't in my highest gear
Last edited by alcjphil; 04-23-23 at 01:51 PM.