Results from- https://www.newcombspring.com/springulator/compression-spring-calculator
Spring calcs- https://suspensionsecrets.co.uk/how-to-calculate-coil-or-leaf-spring-rates/
Springulator values:
Spring Type
COMPRESSION
Calculation Type
TWO LOAD
Units
in
Outer Diameter (OD)
3
Inner Diameter (ID)
2.4
Mean Diameter (D)
2.7
Load (P1)
250
Height With Load (L1)
30
Load (P2)
50
Height With Load (L2)
60
Load @ Solid Height
266.61
Solid Height (H)
27.51
Total Coils (N or Nt)
90.7
Active Coils (n or Na)
88.7
Free Length (L)
67.481
Wire Diameter (d)
0.3
Rate (R)
6.67
Deflection (F1)
37.48
Index (C)
9
Wahl Factor (K)
1.16
Part Weight
15.4989
Tensile Strength
252846
Max % Allowed of Tensile
45
Corrected Stress (Sk)
78895
Material Type
Chrome Silicon (CS)
End Type
Closed