Motion Ratio

Rising Rate Suspension: A Design Guide

Explains the math for getting a motion ratio curve, its very simple just doing moment balance ^

I made a random bellcrank setup on my own practice sketch and calculated motion ratios for it at different wheel displacements (ride heights)

https://docs.google.com/spreadsheets/d/1sx96wiQNE9pCNd-rkbB9jjppUsqj5QQ2PgcQQsgRyYo/edit?usp=sharing

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The horizontal lines at the wheel are ride height levels in +0.2in increments, and i just dragged the setup to each height and measured the corresponding compressed shock length (light blue line).

Put all the data in a table, process it to get motion ratios, and plot it:

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