FCM Elite Ride Harmonizer Spreadsheet   ND Mazda Miata (2016-) FRC & Setup Comparison   NOTE1: If values or formats appear off, press 'reset' button at bottom left  
  Copyright © SHAIKH JALAL AHMAD   http://www.fatcatmotorsports.com/contact_elite.htm  
                               
  FRONT and REAR Tubular or Solid Sway Bar inputs: For a Solid Bar, thickness = 0.5 * Outside Diameter; For a Tubular bar, thickness = wall thickness  
  Front Sway Bar Outside Diameter Front Bar thickness (for solid = 1/2* OD) Rear Sway Bar Outside Diameter Rear Bar thickness (for solid = 1/2* OD) Front spring Rear Spring Bump stop rate Front Bump stop rate Rear Bounce Frequency (Hz) Ratio, Bounce Freq Flat Ride or Pitch? Front Roll Couple (FRC) Total Roll Stiffness Front Roll Stiffness Rear Roll Stiffness Bar ratio (bar stiff / total roll stiff) Spring ratio (spr stiff / total roll stiff) Comments  
  mm mm mm mm lb/in lb/in lb/in lb/in Front  Rear R/F   % lb-ft/deg % %  
     
     
     
     
     
     
     
     
     
     
 
  ADJUSTABLE SWAY BAR ARM (or ELBOW) LENGTH, Effect on Front Roll Couple % (FRC %). Keep spring rate & sway bar thickness constant, vary front and/or rear arm length to see FRC changes.  
  Front Sway Bar Outside Diameter Front Bar thickness (for solid = 1/2* OD) Rear Sway Bar Outside Diameter Rear Bar thickness (for solid = 1/2* OD) Front spring Rear Spring Input sway bar length (mm) Input sway bar elbow length (mm) Bump stop rate Front Bump stop rate Rear Bounce frequency (Hz) Ratio, Bounce Freq (Hz) Flat Ride or Pitch? Front Roll Couple (FRC) Total Roll Stiffness Front roll stiffness Rear roll stiffness Comments  
  mm mm mm mm lb/in lb/in Front  Rear Front  Rear lb/in lb/in Front  Rear R/F   % lb-ft/deg  
   
   
   
   
   
 
  Racer's Edge , utilize corner weights and tune spring rates to obtain matching left and right bounce frequencies!  
  Front Sway Bar Outside Diameter Front Bar thickness (for solid = 1/2* OD) Rear Sway Bar Outside Diameter Rear Bar thickness (for solid = 1/2* OD) Corner weights (w/driver), LF/RF top, LR/RR bot Total weight Front weight Rear weight Cross weight, (LR+RF) / total Spring rates, LF/RF top, LR/RR bot Bounce Freqs, LF/RF top, LR/RR bot Bounce Freq Ratio L-FRC R-FRC Max bump force @ 30 ips Target bump force @ 5ips  
  mm mm mm mm lb   lb % % % lb / in Hz Left side Right side % lb-f lb-f  
   
    Setup 1                      
                                               
   
    Setup 2                      
                                               
   
    Setup 3                      
 
      Front Sway Bar dimensions   Rear Sway Bar dimensions  
  Vehicle weight (lb)     Sway bar motion ratios   Sway Bar length (dist. between elbows)  (mm) Length of elbow (mm)   Sway Bar length (dist. between elbows)  (mm) Length of elbow (mm)  
  Driver & passenger weight (lb)     Front 0.567      
  Total vehicle + passenger weight (lb)     Rear 0.502  
 
  Weight dist (%)   Sprung weight (lb)   Unsprung weight (lb) Tire weight (lb) Wheel weight (lb) Est. or meas'd weight of susp. components (lb)  NOTE: Unsprung weight is tire weight + wheel weight + 50% of total suspension components weight. If direct measurements aren't possible, taking 10% of the corner weight as unsprung weight is a reasonable assumption  
  Front   Front   Front Front Front Front      
  Rear   Rear   Rear Rear Rear Rear      
                                 
  Vehicle track (in)   Spring motion ratios   Shock motion ratios                
  Front   Front 0.65   Front 0.65                
  Rear   Rear 0.88   Rear 0.88                
  Wheelbase (in) 90.9                            
 
  Unit converter  
  Deg F Deg C lb kg in mm  
   
  Deg C Deg F kg lb mm in  
   
  kg-(force) N lb kPa psi bar  
   
  N kg-(force) lb psi kPa bar  
   
  lb kg-(force) N bar psi kPa  
   
  kg/mm N/mm lb/in toe (in) wheel dia toe (deg)  
   
  N/mm kg-f/mm lb/in toe (deg) wheel dia toe (in)  
   
  lb/in kg-f/mm N/mm