Interesting what Wikipedia has to say on Panhard Rods:
“This arrangement is not usually used with a leaf spring suspension, where the springs themselves supply enough lateral rigidity, but only with coil spring suspensions.”
So it must be true!
Obviously there is far less resistance to lateral movement in a coil spring than in a leaf spring but that does not mean there is no lateral movement with leaf springs. They will twist and with the underslung chassis of a Morgan, they will twist more when the car hit a bump and the suspension is loaded.
