I hope you can see those but I just hit back from my first harder ride in a month. 23 miles in 1 hour 12 minutes, Average speed 19.3 mph. But I don't know my cadence or understand my rpm. While riding my rpm was ranging from 23o- 3oo rotations per minute .I know I was in a good gear because I want spinning with out resistance? I rarely used the larger gear on the crank mainly stayed in the second, I thought this might be a cause so I went on a second ride. I put it in the largest ring on the crank and shifted the gears up. But with every shift the rpms increased? Why?