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What's your gear ratio?
Your gearing is very close to mine. I have 46 in front and 19 in back. From following this forum, I have learned that my ratio is too low for a "fast" cyclist. That's OK with me. I'm not very strong, and I have an upright handlebar, so I pay an aerodynamic penalty compared to a drop-bar bike. I use my bike for riding around town, commuting to work, going to the opera, or for easy recreational rides of less than 25 miles on relatively flat terrain, and I'm happy with it.