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Spring suspension is important to absorb shocks when driving over uneven terrain and to allow enough flex when going over large obstacles. However, springs lead to unwanted body tilting at slops and shaking due to forward/backward acceleration, centrifugal acceleration or torque twist.
This video shows, how to determine the optimum spring rate (also called spring stiffness, spring constant or spring coefficient). A simple equation is being derived that can be used to find the best spring rate and spring deflection during rest. The mathematical model behind these derivations are based on the assumption, that movements are rather slow, which is valid for careful crawling over obstacles.
Here you find a link to a video that shows how to maximize crawler flex (i.e. articulation, suspension travel): kzfaq.info/get/bejne/l6-gnLt-zL-qkYE.html
More about tilting at slopes is here:
kzfaq.info/get/bejne/rNJ7maynnMiYdmQ.html
Footage about torque twist was kindly provided by "Nycosp" and "lordofbasement":
kzfaq.info/get/bejne/l8eadquCx62oiZs.html
kzfaq.info/get/bejne/irWFZrt5la6xcps.html
Music:
Luminescence_Colossus_instrumental_04_58, license from Soundstripe