sprocket_calc_fireball
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ABCDEFGHIJKLMN
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Weight KPH per 1000 RPM 1:1 top gearSprocketWheel diaFrontal areaDrag Co-effRolling resistanceSee Chart on other sheet
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25527.831919.000.750.600.01
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NR1TQ from dynoTQ from second order poly fun fitHPPotential Speed by LRT formulaPotential Speed by drag formulaWheel speed Required HP from drag formulaRequired HP from LRT formulaRequired TQ from drag formulaRequired TQ from LRT formulaMax sprocket teeth for RPM dragMax sprocket teeth for RPM LRT
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1.01000.025.024.84.781.582.427.80.40.12.30.7204.1663.3
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2.01100.025.65.484.786.030.60.50.22.50.9194.3550.2
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3.01200.026.46.087.889.533.40.60.22.71.1184.5464.2
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4.01300.027.26.790.792.836.20.70.33.01.3174.8397.3
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5.01400.028.07.593.596.039.00.90.43.21.5165.4344.0
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6.01500.028.78.296.399.141.71.00.53.51.8156.4300.9
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7.01600.029.49.098.9102.144.51.20.63.82.1147.8265.5
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8.01700.030.19.7101.4104.947.31.30.84.12.4139.7236.0
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9.01800.030.710.5103.8107.750.11.50.94.42.8132.0211.2
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10.01900.031.311.3106.2110.452.91.71.14.83.1124.8190.1
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11.02000.031.912.2108.4113.055.72.01.35.13.5118.1172.0
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12.02100.032.513.0110.6115.558.42.21.65.53.9111.7156.4
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13.02200.033.013.8112.7117.961.22.51.85.94.4105.8142.7
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14.02300.033.514.7114.8120.364.02.82.16.44.9100.2130.7
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15.02400.034.015.5116.7122.666.83.12.56.85.495.0120.1
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16.02500.034.034.416.4118.6124.869.63.52.87.35.990.1110.7
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17.02600.034.817.2120.5127.072.43.83.27.76.585.5102.3
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18.02700.035.218.1122.3129.075.14.23.68.27.181.294.8
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19.02800.035.619.0124.0131.177.94.74.18.87.777.288.1
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20.02900.035.919.8125.7133.080.75.14.69.38.373.481.9
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21.03000.036.036.220.7127.3134.983.55.65.19.99.069.876.4
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22.03100.036.521.5128.8136.786.36.25.710.49.766.571.4
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23.03200.036.722.4130.4138.589.16.76.411.010.563.366.7
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24.03300.037.023.2131.8140.291.87.37.111.611.260.362.5
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25.03400.037.124.0133.2141.894.67.97.812.312.057.558.6
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26.03500.037.037.324.9134.5143.497.48.68.612.912.954.855.1
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27.03600.037.425.7135.8144.9100.29.39.413.613.752.351.8
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28.03700.037.526.4137.1146.4103.010.110.314.314.649.948.7
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29.03800.037.627.2138.3147.8105.810.811.315.015.647.745.9
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30.03900.037.628.0139.4149.1108.511.712.315.716.545.543.3
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31.04000.038.337.728.7140.5150.4111.312.513.316.517.543.540.8
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32.04100.037.629.4141.5151.6114.113.514.517.218.641.538.6
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33.04200.037.630.1142.5152.8116.914.415.718.019.639.736.4
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34.04300.037.530.7143.4153.9119.715.417.018.820.737.934.4
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35.04400.037.431.4144.3154.9122.416.518.319.621.836.232.6
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36.04500.037.037.332.0145.2155.9125.217.519.720.523.034.630.8
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37.04600.037.232.5145.9156.8128.018.721.221.324.233.129.2
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38.04700.037.033.1146.7157.7130.819.922.822.225.431.627.6
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39.04800.036.833.6147.3158.5133.621.124.423.126.730.226.1
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40.04900.036.534.1148.0159.2136.422.426.124.028.028.924.8
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41.05000.036.036.234.5148.5159.9139.123.828.025.029.427.623.4
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42.05100.035.934.9149.1160.5141.925.229.925.930.726.422.2
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43.05200.035.635.3149.5161.1144.726.631.826.932.225.221.0
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44.05300.035.335.6149.9161.6147.528.133.927.933.624.019.9
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45.05400.034.935.9150.3162.0150.329.736.128.935.122.918.9
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46.05500.035.534.536.1150.6162.3153.131.338.329.936.621.917.9
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47.05600.034.036.3150.8162.6155.833.040.731.038.220.916.9
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48.05700.033.536.4151.0162.8158.634.843.232.039.819.916.0
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49.05800.033.036.5151.1162.9161.436.645.733.141.419.015.2
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50.05900.032.536.5151.1163.0164.238.448.434.243.118.114.3
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51.06000.031.032.036.5151.1163.0167.040.451.135.344.817.213.6
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52.06100.031.436.4151.0162.9169.842.454.036.546.516.312.8
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53.06200.030.836.3150.8162.7172.544.457.037.648.315.512.1
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Data
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Sheet3