Top: Home page  
  Up: gearing  
   
  Drive ratios of bicycle hub gears  
   
  including most common hubs and many rare ones  
   
  A workbook prepared in Microsoft Excel 2007  
  and also saved as Web pages  
   
  John S. Allen  
   
  Read this first  
  Acknowledgements  
  Fractional ratios  
  Improper fractions  
  Decimal approximations  
  Increments and total range  
  Example of reverse engineering  
  Original Excel workbook, with formulas  
   
  copyright 2009, 2010, John S. Allen  
  Last revised March 17, 2010