Based on MSXII calculations:
mech/MSXII/SpringRateProject/MSXII Supsension Parameters.pdf at master ยท uw-midsun/mech
Excel:
https://docs.google.com/spreadsheets/d/1k_0UjGT7vGDfmyS3752O9k0tVF_hCABNAFH72ZUI71g/edit?usp=sharing
ย