inboard suspensions

[KnifeEdge_2K1]

do joints in inboard suspensions with longitudally mounted springs need to be ball type joints on the pushrod joints? or do bushings provide enough play to allow them to use regular hinge joints

[johnnyperl]

depends on the geometry. if the motion of the bell crank and the push rod are co-planar than a standard bearing would be suitable. thats why (most) mountain bike shocks can get away with hylon/teflon bushings. however, the use of sphircal ball joints prevents the transfer of any moment from the pushrod to the other components.

[culver]

I've seen quite a few racecars with this type of suspension. None have used pivot type bearings/bushings. I'm not sure you could design the suspension where some type of angular compliant bushing/bearing isn't needed. I know they would LIKE to not need a spherical bearing because they have a lot more friction than a roller bearing.