What rate and length springs should I use?
Coil-over Main Spring Rate Calculations
 
Inputs
Value  Units  Description 
 WT 
   in  Wheel Travel
 CSW 
   lb  Corner Sprung Weight
 CUSW     lb  Corner Unsprung Weight
 D1     in  Distance 1
 D2     in  Distance 2
 Angle θ     °  Angle theta (degrees)
 Angle α     °  Angle alpha (degrees)
 Droop %     %  Droop/Ride Height %
 SUR %     %  Step Up Rate
     
 
USER GUIDE
DIAGRAMS
 
Click on the "Value" letter for a definition of that Value.
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 Edit Inputs (GREEN FIELDS), click 'Next' button
  to recalculate the Outputs (ORANGE FIELDS)
 
Outputs
Value  Units  Description 
 WRA     lb/in  Wheel Rate
 MR 
     Motion Ratio
 SR     lb/in  Spring Rate
 RF     Hz  Ride Frequency
 DT     in  Droop Travel
 TENDER     lb/in  Tender Spring Rate
 MAIN     lb/in  Main Spring Rate
 SWR     lb/in  Secondary Wheel
 Rate
       
 
 
 
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SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

What are my primary, secondary and final
rates my triple rate set up?
Triple Rate Calculator
 
Inputs
Value  Units  Description 
 MAIN 
   lb/in  
 CENTER 
   lb/in  
 TENDER 
   lb/in  
 ST 
   in  
       
 
 
 
 
 
 
 
 
 
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 Edit Inputs (GREEN FIELDS), click 'Next' button
  to recalculate the Outputs (ORANGE FIELDS)
 
Outputs
Value  Units  Description 
 PRIMARY
   lb/in  
SECONDARY
   lb/in  
 FINAL
   lb/in  
Slider C-T
   in  
 Slider M-C
   in  
 MAIN TR
   in  
 CENTER TR
   in  
 TENDER TR
   in  
       
 
 
 
SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

How much does the spring divider travel?
Where do I put the lock rings to stop the slider?
Slider Travel/Location Calculator
 
Inputs
Value  Units  Description 
 MAIN
   lb/in  
 TENDER
   lb/in  
 ST
   in  
     
 
 
 
 
 
 
 
 
 
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 Edit Inputs (GREEN FIELDS), click 'Next' button
  to recalculate the Outputs (ORANGE FIELDS)
 
Outputs
Value  Units  Description 
 Primary Rate 
 lb/in  
 Slider Travel 
 in  
     
 
 
 
 
 
 
 
 
 
 
 
SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

What are my primary and
secondary rates for my dual rate set up?
Dual Rate Calculator
DUAL RATE SPRINGS
 
Inputs
Value  Units  Description 
 MAIN 
   lb/in  
 TENDER 
   lb/in  
     
 
 
 
 
 
 
 
 
 
 
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 Edit Inputs (GREEN FIELDS), click 'Next' button
  to recalculate the Outputs (ORANGE FIELDS)
 
Outputs
Value  Units  Description 
 Primary Rate 
 lb/in  
 Secondary
 Rate
 in  
     
 
 
 
 
 
 
 
 
 
 
SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

What are my existing spring rates?
Spring Rate from Spring Dimensions Calculator
SPRING RATE FROM SPRING DIMS
 
Inputs
Value  Units  Description 
     G     
   PSI  
     d   
   in  
     N         #
     D         in  
     OD         in  
     ID         in  
     K        bulk modulus
(incompressibility)
 
       
 
 
Click on the "Value" letter for a definition of that Value.
 
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SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

How much does my reservoir piston travel?
Reservoir Piston Travel Calculations
 
Inputs
Value  Units  Description 
 Shaft Trvl 
   in  
 Shaft Dia. 
   in  
 Bore Dia. 
   in  
     
 
 
 
 
 
 

 Edit Inputs (GREEN FIELDS), click 'Next' button
  to recalculate the Outputs (ORANGE FIELDS)
 
Outputs
Value  Units  Description 
 Piston Trvl 
 lb/in  
     
 
 
 
 
 
 
 
 
 
SWAY-A-WAY CALCULATORS
Coil-over Main Spring Rate Calculations
Dual Rate Calculator
Slider Travel/Location Calculator
Spring Rate from Spring Dimensions Calculator
Reservoir Piston Travel Calculations
Triple Rate Calculator
 

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