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.
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
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
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
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 Spr
ing 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
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.
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