Gear inches / gain ratio for 26 inch diameter wheel • 175 inch crank arm length
  30 26 23 20 17 15 13 11
24 20.80 / 1.51 24.00 / 1.74 27.13 / 1.97 31.20 / 2.26 36.71 / 2.66 41.60 / 3.02 48.00 / 3.48 56.73 / 4.12
38 32.93 / 2.39 38.00 / 2.76 42.96 / 3.12 49.40 / 3.59 58.12 / 4.22 65.87 / 4.78 76.00 / 5.52 89.82 / 6.52
48 41.60 / 3.02 48.00 / 3.48 54.26 / 3.94 62.40 / 4.53 73.41 / 5.33 83.20 / 6.04 96.00 / 6.97 113.45 / 8.23