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Cyclecomputer Calibration Group A

If the model name is highlighted, clicking on it will take you to detailed setting instructions.

Avocet 35 (miles), 40 (miles), 45 (miles), 50 (miles),

Schwinn Speed Thing (round to nearest inch)


Circumference in inches

700 X 44 87.55
700 X 38 85.82
700 X 35 84.21
700 X 32 83.22
700 X 28 82.55
700 X 25 82.12
700 X 23 81.56
700 X 20 81.02
27 X 1 3/8 85.08
27 X 1 1/4 84.33
27 X 1 1/8 83.58
27 X 1 82.91
26 X 2.125 82.12
26 X 1.9 80.63
26 X 1.5 77.71
26 X 1.25 77.44
26 X 1.0 (559 mm) 75.31
26 x 1 (650C) 76.85
Wide Tubular 83.34
Narrow Tubular 82.12
26 X 1 3/8 81.41
24 75.43
24 x 1 69.01
20 X 1.75 (406) 60.15
20 X 1 1/4 (451) 63.70
17 x 1 1/4 52.17
16 x 1 3/8 50.47

Spoke Divider

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