1- Choose Your Bike: The gearing fields will automatically change for you  
  Virago 535  V-Star 650  V-Star 1100  V-Star 1300  R-Star 1600   
  2- Enter RPM or speed into green cells.  
  3- View results in bold.
  
                       
  Note, there are additional changeable cells (bottom left) for those who measure speed in KPH  
  and for those whose speedometers are not correct.  
                       
          Let Engine RPM =   Let Vehicle Speed =    
  Primary Reduction                    
  (for motorcycles only;     Overall Vehicle Speed   % of max RPM Engine speed    
  use 1.0 for cars)       Reduction     (RPM)    
                       
  Transmission 1st        
    2nd        
  Gear 3rd        
    4th        
  Ratios 5th        
    6th        
                       
  Final Drive Reduction                  
                       
  Tire Diameter (inches)     Circumference =   Calculate Tire Size      
                       
  Engine Redline (RPM)                  
                       
  Speedometer Error     (+) If speedo reads fast and (-) if the speedo reads slow      
          Enter (0) to see actual vehicle speeds      
  Units (MPH or KPH)                  
                       
                       

Automatic recalculation 

Used by Norwestars with permission of NITF (owner) at mdrop@ricochet.com , Please Contact NITF   for use of this material.