Should I change my gear ratio? I'm running 46/17. There are hills and mountains even where I live but can I avoid most of them when I want to. When I ride my fixed bike I usually stick to flatter terrain and according to Strava I can get up to 30 mph with my current set up. But I feel slow especially from a stop. I am thinking about putting a 19 or 20 cog on the other side of my wheel so I have options. Worth the trouble?