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spring formulas
calc spring rate - formula
fork spring dimens - meas
fkspr rates & dimen - crc
fkspr rates & dimen - crc sff
fkspr rates & dimen - dsp
fkspr rates & dimen - fc
fkspr rates & dimen - kyb
fkspr rates & dimen - ktech sff
fkspr rates & dimen - qspr sff
fkspr rates & dimen - showa
fkspr rates & dimen - showa sff
fkspr rates & dimen - wp
fkspr rate & dimen - crc coilbind
fkspr rate & dimen - dsp coilbind
icspr dimens - meas
icspr dimens - kyb
icspr dimens - showa
icspr dimens - wp
icspr dimens - crc
icspr dimens - fc
icspr dimens - merge
canon racecraft springs
cannon spring chart (website)
cannon fk spr info, meas rates
diverse spring
diverse - fork springs avail
diverse - measured fk spr rates
eibach spring
eibach spring PDF (website)
fork preload overview
fork springs are linear
spring rate conversions
spring rate conversions- leespr
fork spring search
fk  spr - search by spr
fk spr - search by bike


   Springs - measure spring rate  
Measure Spring Rate
  Default Torsional Modulus            11300000
#/in      0   [0]
kg/mm      0   [0]
N      0   [0]
Spring Length      
spr free length     
solid ht      0 mm
max travel  (no prel)      0 mm
ValvingLogic Model     
rate N      0   
wire length      0
wire volume      0
  • If you have absolutely no idea what your spring rate is, you can measure the spring dimensions and use the calculator above to determine your rate. 
  • This will give you an approximate idea. 
    • Fork springs usually rate very close to actual (+/- .10).
    • Shock spring don't rate very closely due to the spring wire coating and the open coils on the ends.
    1. Measure the wire diameter.
    2. Count the number of active coils.
    3. Measure the outer diameter of the spring.
    4. Enter these values in the calculator above.
  Measure wire diameter.
  Count number of coils.
  Measure outer diameter of spring.