I recently installed a Strada Cadence cyclocomputer to help me become a more efficient cyclist and commuter. In the flats and on smaller, rolling hills i was trying to stay between 75-90rpms. My road on the way home has an average of a 12% grade over 1/2 mile with as high as a 17.5% grade on one part of it. I was in my lowest gear and was lucky if i could keep my cadence above 55rpm. I always stay seated when climbing that hill the whole way. My book bag was loaded up with about 15 lbs of books strapped to the rear rack. I'm not sure if you guys pay attention to cadence, but is that something i should worry about, or am i doing good with cadence with a steep hill like that?