PROCEED OVER DRIVE RATIO CHART                    
    71 71.5 72 72.5 73 73.5 74 74.5 75 75.5 76 76.5 77 77.5 78
61 26 0.9913 0.9844 0.97757 0.97082 0.9642 0.9576                  
  27 0.9546 0.94794                          
61.5 26 0.9995 0.99247 0.98558 0.97878 0.9721 0.9655 0.9589                
  27 0.9624 0.95571 0.94908                        
62 26 1.0076 1.00054 0.99359 0.98674 0.98 0.9733 0.9667 0.9602              
  27 0.9703 0.96348 0.95679 0.95019                      
62.5 26 1.0157 1.00861 1.0016 0.9947 0.9879 0.9812 0.9745 0.968 0.9615            
  27 0.9781 0.97125 0.96451 0.95786 0.9513                    
63 26 1.0238 1.01668 1.00962 1.00265 0.9958 0.989 0.9823 0.9757 0.9692 0.9628          
  27 0.9859 0.97902 0.97222 0.96552 0.9589 0.9524                  
63.5 26 1.032 1.02475 1.01763 1.01061 1.0037 0.9969 0.9901 0.9835 0.9769 0.9705 0.9641        
  27 0.9937 0.98679 0.97994 0.97318 0.9665 0.9599 0.9535                
64 26 1.0401 1.03281 1.02564 1.01857 1.0116 1.0047 0.9979 0.9912 0.9846 0.9781 0.9717 0.9653 0.959    
  27 1.0016 0.99456 0.98766 0.98084 0.9741 0.9675 0.961 0.9545              
64.5 26   1.04088   1.02653 1.0195 1.0126 1.0057 0.999 0.9923 0.9857 0.9793 0.9729 0.9665 0.9603 0.9541
  27 1.0094 1.00233 0.99537 0.98851 0.9817 0.9751 0.9685 0.962 0.9556            
65 26       1.03448 1.0274 1.0204 1.0135 1.0067 1 0.9934 0.9868 0.9804 0.974 0.9677 0.9615
  27 1.0172 1.0101 1.00309 0.99617 0.9893 0.9826 0.976 0.9694 0.963 0.9566          
65.5 26       1.04244 1.0353 1.0283 1.0213 1.0145 1.0077 1.001 0.9944 0.9879 0.9815 0.9752 0.9689
  27 1.025 1.01787 1.0108 1.00383 0.997 0.9902 0.9835 0.9769 0.9704 0.9639 0.9576        
66 26         1.0432 1.0361 1.0291 1.0222 1.0154 1.0087 1.002 0.9955 0.989 0.9826 0.9763
  27 1.0329 1.02564 1.01852 1.0115 1.0046 0.9977 0.991 0.9843 0.9778 0.9713 0.9649 0.9586      
66.5 26           1.044 1.0369 1.0299 1.0231 1.0163 1.0096 1.003 0.9965 0.9901 0.9837
  27 1.0407 1.03341 1.02624 1.01916 1.0122 1.0053 0.9985 0.9918 0.9852 0.9787 0.9722 0.9659 0.9596    
67 26             1.0447 1.0377 1.0308 1.0239 1.0172 1.0106 1.004 0.9975 0.9911
  27   1.04118 1.03395 1.02682 1.0198 1.0129 1.006 0.9993 0.9926 0.986 0.9795 0.9731 0.9668 0.9606  
67.5 26               1.0454 1.0385 1.0316 1.0248 1.0181 1.0115 1.005 0.9985
  27     1.04167 1.03448 1.0274 1.0204 1.0135 1.0067 1 0.9934 0.9868 0.9804 0.974 0.9677 0.9615
68 26                 1.0462 1.0392 1.0324 1.0256 1.019 1.0124 1.0059
  27       1.04215 1.035 1.028 1.021 1.0142 1.0074 1.0007 0.9942 0.9877 0.9812 0.9749 0.9687
68.5 26                   1.0469 1.04 1.0332 1.0265 1.0199 1.0133
  27         1.0426 1.0355 1.0285 1.0216 1.0148 1.0081 1.0015 0.9949 0.9885 0.9821 0.9758
69 26                     1.0476 1.0407 1.034 1.0273 1.0207
  27           1.0431 1.036 1.0291 1.0222 1.0155 1.0088 1.0022 0.9957 0.9892 0.9829
69.5 26                       1.0483 1.0415 1.0347 1.0281
  27             1.0435 1.0365 1.0296 1.0228 1.0161 1.0094 1.0029 0.9964 0.99
70 26                         1.049 1.0422 1.0355
  27               1.044 1.037 1.0302 1.0234 1.0167 1.0101 1.0036 0.9972