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Fond Du Lac BMX Club Map

Location:
307 N Hickory St
Fond Du lac WI 54935
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Track Operator:
Patrick Beniger
920-207-7065
Joanna Beniger
920-207-7064
pat.beniger@fdlbmx.com

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Bike Tech - Gearing Charts

OPTIMAL GEARING CHART
EXPERT INTERMEDIATE NOVICE
"Sew Ups" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 46.1 47.5 48.9 50.3 51.6 53 54.3 55.7 57 58.4 59.8 61.1 62.5 63.9 65.2
Freewheel 15 43 44.3 45.6 46.9 48.2 49.4 50.7 52 53.2 54.5 55.8 57 58.3 59.6 60.9
Freewheel 16 40.3 41.6 42.8 43.9 45.2 46.3 47.5 48.8 50 51.1 52.3 53.5 54.7 55.8 57
Freewheel 17 38 39.1 40.5 41.4 42.5 43.6 44.7 45.9 47 48.1 49.2 50.3 51.4 52.5 53.7
Freewheel 18 35.9 36.8 38 39.1 40.1 41.2 42.2 43.3 44.4 45.4 46.5 47.5 48.6 49.6 50.7
 
20" x 1.125" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 48.6 50 51.4 52.8 54.3 55.7 57.7 58.6 60 61.4 62.8 64.3 65.7 67.1 68.6
Freewheel 15 45.3 46.7 48 49.3 50.7 52 53.3 54.7 56 57.3 58.7 60 61.3 62.7 64
Freewheel 16 42.5 43.8 45.5 46.2 47.5 48.7 50 51.2 52.5 53.7 55 56.2 57.5 58.7 60
Freewheel 17 40 41.2 42.3 43.5 44.7 45.9 47 48.2 49.4 50.6 51.8 52.9 54.1 55.3 56.5
Freewheel 18 37.7 38.8 40 41.1 42.2 43.3 44.4 45.6 46.7 47.8 48.9 50 51.1 52.2 53.3
 
20" x 1.375" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 51 52.5 54 55.5 57 58.5 60 61.5 63 64.5 66 67.5 69 70.5 72
Freewheel 15 47.6 49 50 51.8 53.2 54.6 56 57.4 58.8 60.2 61.6 63 64.4 65.8 67.2
Freewheel 16 44.6 45.9 47.3 48.6 49.9 51.2 52.5 53.9 55.2 56.5 57.8 59.1 60.4 61.7 63
Freewheel 17 42 43.2 44.5 45.7 47 48.2 49.4 50.7 51.9 53.2 54.4 55.6 56.9 58.1 59.3
Freewheel 18 39.7 40.7 42 43.2 44.4 45.5 46.7 47.9 49 50.2 51.4 52.5 53.7 54.9 56
 
20" x 1.50" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 46.8 48.1 49.5 50.9 52.3 53.6 55.5 56.4 57.7 59.1 60.5 61.8 63.2 64.6 66
Freewheel 15 43.6 44.9 46.2 47.4 48.8 50.1 51.3 52.6 53.9 55.2 56.5 57.7 59.1 60.2 61.6
Freewheel 16 40.9 42.1 43.3 44.5 45.7 46.9 48.1 49.3 50.5 51.7 52.9 54.1 55.3 56.6 57.7
Freewheel 17 38.5 39.6 40.8 41.9 43.1 44.1 45.2 46.4 47.5 48.7 49.8 51 52.2 53.1 54.3
Freewheel 18 36.4 37.4 38.5 39.6 40.6 41.7 42.8 43.9 44.9 46 47 48.1 49.2 50.3 51.3
 
20" x 1.75" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 47.4 48.7 50.2 51.6 53 54.4 55.7 57.1 58.5 59.9 61.3 62.7 64.1 65.5 66.9
Freewheel 15 44.3 45.4 46.8 48.1 49.4 50.7 52 53.3 54.6 55.9 57.2 58.5 59.8 61.1 62.4
Freewheel 16 41.5 42.7 43.9 45.1 46.3 47.5 48.8 50 51.2 52.4 53.7 54.9 56.1 57.3 58.5
Freewheel 17 39 40.2 41.3 42.5 43.6 44.7 45.9 47 48.2 49.4 50.5 51.7 52.8 53.9 55.1
Freewheel 18 36.8 37.8 39 40.1 41.2 42.3 43.3 44.4 45.5 46.6 47.7 48.8 49.9 51 52
 
24" x 1.125" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 54.9 56.5 58.1 59.7 61.3 63.1 64.7 66.3 67.9 69.4 71 72.6 74.4 76 77.5
Freewheel 15 51.3 52.8 54.3 55.8 57.3 58.8 60.3 61.8 63.3 64.9 66.3 67.9 69.4 70.8 72.4
Freewheel 16 48.1 49.5 50.9 52.3 53.7 55.1 56.6 57.9 59.5 60.8 62.2 63.9 65.1 66.5 67.9
Freewheel 17 45.2 46.6 47.9 49.3 50.6 51.9 53.2 54.6 55.9 57.2 58.6 59.9 61.3 62.4 63.8
Freewheel 18 42.7 43.9 45.2 46.6 47.7 49.1 50.3 51.5 52.8 54 55.3 56.6 57.9 59 60.4
 
24" x 1.375" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 58.3 60 61.7 63.3 65 66.9 68.6 70.3 72 73.7 75.3 77 78.9 80.6 82.3
Freewheel 15 54.5 56 57.6 59.3 60.7 62.4 64.1 65.5 67.2 68.9 70.3 72 73.7 75.1 76.8
Freewheel 16 51 52.5 54 55.5 57 58.5 60 61.4 63.1 64.5 66.6 67.4 69.1 70.5 72
Freewheel 17 48 49.4 50.8 52.2 53.6 55.1 56.5 57.9 59.3 60.7 62.1 63.6 65 66.2 67.7
Freewheel 18 45.3 46.5 48 49.4 50.7 52 53.3 54.7 56 57.3 58.5 60 61.4 62.6 64.1
 
24" x 1.50" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 55.9 57.5 59.1 60.7 62.3 64.2 65.8 67.4 69 70.6 72.2 73.8 75.7 77.3 78.9
Freewheel 15 52.1 53.7 55.2 56.7 58.2 59.8 61.3 62.8 64.4 65.9 67.4 69 70.6 72 73.6
Freewheel 16 48.8 50.3 51.8 53.2 54.6 56 57.5 58.9 60.3 61.8 63.2 64.6 66.2 67.6 69
Freewheel 17 46 47.3 48.7 50 51.4 52.8 54.1 55.5 56.8 58.8 59.5 60.8 62.3 63.5 64.8
Freewheel 18 43.4 44.7 46 47.2 48.5 49.8 51.1 52.4 53.7 54.9 56.2 57.5 58.9 60 61.4
 
24" x 1.75" Rollout Gearing Chart
Sprocket Size 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Freewheel 14 58.3 60 61.7 63.3 65 66.9 68.6 70.3 72 73.7 75.3 77 78.9 80.6 82.3
Freewheel 15 54.4 56 57.6 59.3 60.7 62.4 64.1 65.5 67.2 68.9 70.3 72 73.7 75.1 76.8
Freewheel 16 51 52.5 54 55.5 57 58.5 60 61.4 63.1 64.5 66 67.4 69.1 70.5 72
Freewheel 17 48 49.4 50.8 52.2 53.6 55.1 56.5 57.9 59.3 60.7 62.1 63.6 65 66.2 67.7
Freewheel 18 45.3 46.5 48 49.4 50.7 52 53.3 54.7 56 57.3 58.5 60 61.4 62.6 64.1
© fdlbmxclub.com - All rights reserved
*These are average tire diameters from the factory and should get you in the ballpark, you may have to adjust your gears up or down from here.
                               

 

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