TB Awards 2/9/17
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Contact Us
Sand Springs BMX Map

Location:
2600 S River City Park Rd
Sand Springs OK 74063
View Map | Get Directions

Track Operator:
Ronnie Hagar
918.809.1239
John Schaffitzel
918.629.2416
ronniehagar@yahoo.com

Coaches:
Jeffrey Jones

Track Image

Gear Chart

For Exact Gear Measurement... Divide Front Gear by Rear Gear and Multiply by Tire
Diameter
Example: 44/16 = 2.75 x 19.5 = 53.625 gear inches (20x1.75 tire)
These charts are for general reference - actual tire diameter varies from brand to brand
20" X 1.75" GEAR CHART
Chain wheels   34   35     36    37  38     39   40     41    42    43   44     45    46
Freewheel 14 47.4 48.7 50.2 51.6 53.0 54.4 55.7 57.1 58.5 59.9 61.9 62.7 64.1
Freewheel 15 44.3 45.4 46.0 48.1 49.4 50.7 52.0 53.3 54.6 55.9 57.2 58.5 59.8
Freewheel 16 41.5 42.7 43.6 45.1 46.3 47.5 48.8 50.0 51.2 52.4 53.7 54.9 56.1
Freewheel 17 39.0 40.2 41.3 42.5 43.6 44.7 45.9 47.0 48.2 49.4 50.5 51.7 52.8
Freewheel 18 36.8 37.8 39.0 40.1 41.2 42.3 43.3 44.4 45.5 46.6 47.7 48.8 49.9
20" X 1.50" GEAR CHART
Chain wheels   34   35    36    37    38    39    40    41    42    43    44    45     46
Freewheel 14 46.8 48.1 49.5 50.9 52.3 53.6 55.0 56.4 57.5 59.1 60.5 61.8 63.2
Freewheel 15 43.6 44.9 46.2 47.4 48.8 50.1 51.3 52.8 53.9 55.2 56.5 57.7 59.1
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
Freewheel 17 38.5 39.6 40.8 41.9 43.1 44.1 45.2 46.4 47.5 48.7 49.8 51.0 52.2
Freewheel 18 36.4 37.4 38.5 39.6 40.6 41.7 42.8 43.9 44.9 46.0 47.0 48.1 49.2
20" x 1 3/8" GEAR CHART
Chain wheels   34     35   36    37     38    39   40    41    42    43    44    45    46
Freewheel 14 51.0 52.5 54.0 55.5 57.0 58.5 60.0 61.5 63.0 64.5 66.0 67.5 69.0
Freewheel 15 47.6 49.0 50.4 51.6 53.2 54.6 56.0 57.4 58.8 60.2 61.6 63.0 64.4
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
Freewheel 17 42.0 43.2 44.5 45.7 47.0 48.2 49.4 50.7 51.9 53.2 54.4 55.6 56.9
Freewheel 18 39.7 40.7 42.0 43.2 44.4 45.5 46.7 47.9 49.0 50.2 51.4 52.5 53.7
20" X 1 1/8" GEAR CHART
Chain wheels    34    35    36    37    38    39   40    41    42    43     44    45    46
Freewheel 14 48.6 50.0 51.4 52.8 54.3 55.7 57.1 58.6 60.0 61.4 62.8 64.3 65.7
Freewheel 15 45.3 46.7 48.0 49.3 50.7 52.0 53.3 54.7 56.0 57.3 58.7 60.0 61.3
Freewheel 16 42.5 43.8 45.0 46.2 47.5 48.7 50.0 51.2 52.5 53.7 55.0 56.2 57.5
Freewheel 17 40.0 41.2 42.3 43.5 44.7 45.9 47.0 48.2 49.4 50.6 51.8 52.9 54.1
Freewheel 18 37.7 38.8 40.0 41.1 42.2 43.3 44.4 45.6 46.7 47.8 48.9 50.0 51.1
24 " X 1 .50" GEAR CHART
Chain wheels   34   35    36    37    38    39    40    41     42    43    44    45    46
Freewheel 14 55.9 57.5 59.1 60.7 62.3 64.2 65.8 67.4 69.0 70.6 72.2 73.8 75.7
Freewheel 15 52.1 53.7 55.2 56.7 58.2 59.8 61.3 62.8 64.4 65.9 67.4 69.0 70.6
Freewheel 16 48.4 50.3 51.8 53.2 54.6 56.0 57.5 58.9 60.3 61.8 63.2 64.6 66.2
Freewheel 17 46.0 47.3 48.7 50.0 51.4 52.8 54.1 55.5 56.8 58.8 59.5 60.8 62.3
Freewheel 18 43.4 44.7 46.0 47.2 48.5 49.8 51.1 52.4 53.7 54.9 56.2 57.5 58.9
24 " X 1 3/ 8" GEAR CHART
Chain wheels   34     35    36    37    38    39   40     41    42    43   44    45     46
Freewheel 14 58.3 60.0 61.7 63.3 65.0 66.9 68.6 70.3 72.0 73.7 75.3 77.0 78.9
Freewheel 15 54.4 56.0 57.6 59.3 60.7 62.4 64.1 65.5 67.2 68.9 71.3 72.0 73.7
Freewheel 16 51.1 52.5 54.0 55.5 57.0 58.5 60.0 61.4 63.1 64.5 66.0 67.4 69.1
Freewheel 17 48.0 49.4 50.8 52.2 53.6 55.1 56.5 57.9 59.3 60.7 62.1 63.3 65.0
Freewheel 18 45.3 46.5 48.0 49.4 50.7 52.0 53.3 54.7 56.0 57.3 58.5 60.0 61.4
24" X 1 1/8" GEAR CHART
Chain wheels   34    35    36    37    38   39    40    41     42    43    44    45    46
Freewheel 14 54.9 56.5 58.1 59.7 61.3 63.1 64.7 66.3 67.9 69.4 71.0 72.6 74.4
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
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
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
Freewheel 18 42.7 43.9 45.2 46.6 47.7 49.1 50.3 51.5 52.8 54.0 55.3 56.6 57.9
24 " X 1 .50" GEAR CHART
Chain wheels   34    35      36   37   38     39    40    41   42    43    44     45   46
Freewheel 14 55.9 57.5 59.1 60.7 62.3 64.2 65.8 67.4 69.0 70.6 72.2 73.8 75.7
Freewheel 15 52.1 53.7 55.2 56.7 58.2 59.8 61.3 62.8 64.4 65.9 67.4 69.0 70.6
Freewheel 16 48.4 50.3 51.8 53.2 54.6 56.0 57.5 58.9 60.3 61.8 63.2 64.6 66.2
Freewheel 17 46.0 47.3 48.7 50.0 51.4 52.8 54.1 55.5 56.8 58.8 59.5 60.8 62.3
Freewheel 18 43.4 44.7 46.0 47.2 48.5 49.8 51.1 52.4 53.7 54.9 56.2 57.5 58.9
24 " X 1 3/ 8" GEAR CHART
Chain wheels    34   35    36     37   38    39    40     41    42    43   44   45     46
Freewheel 14 58.3 60.0 61.7 63.3 65.0 66.9 68.6 70.3 72.0 73.7 75.3 77.0 78.9
Freewheel 15 54.4 56.0 57.6 59.3 60.7 62.4 64.1 65.5 67.2 68.9 71.3 72.0 73.7
Freewheel 16 51.1 52.5 54.0 55.5 57.0 58.5 60.0 61.4 63.1 64.5 66.0 67.4 69.1
Freewheel 17 48.0 49.4 50.8 52.2 53.6 55.1 56.5 57.9 59.3 60.7 62.1 63.3 65.0
Freewheel 18 45.3 46.5 48.0 49.4 50.7 52.0 53.3 54.7 56.0 57.3 58.5 60.0 61.4
24" X 1 1/8" GEAR CHART 
Chain wheels   34    35    36     37   38    39    40    41    42    43    44    45    46
Freewheel 14 54.9 56.5 58.1 59.7 61.3 63.1 64.7 66.3 67.9 69.4 71.0 72.6 74.4
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
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
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
Freewheel 18 42.7 43.9 45.2 46.6 47.7 49.1 50.3 51.5 52.8 54.0 55.3 56.6 57.9

 

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