Torsion Bar Springs Probably the simplest form of spring Common applications >Automotive suspension springs >Counterbalancing springs for car hoods and trunk lids >Doors Fixed end Bearing Spline Torsion bar portion Generous radius Bearing Spline (a) (b) Torsion bar with splined ends Rod with bent ends serving as torsion bar spring (type used in auto suspensions,etc.) (type used for auto hood and trunk counterbalancing.etc.!Torsion Bar Springs • Probably the simplest form of spring • Common applications ØAutomotive suspension springs ØCounterbalancing springs for car hoods and trunk lids ØDoors