[robnolimit]

While wishbones are used in many applications, they can be somewhat complicated. There are two types, 'coupled', and 'uncoupled'. A 'coupled' wishbone also acts as the upper or lower bar set, sort of like a triangulated 4-bar. An 'uncoupled' wishbone must be fabricated with a 'slide' section to get shorter/longer so that it doesn't bind with the 3 or 4 link bars during travel. Coupled wishbones do move straight up and down, with no side to side movement, as long as both tires are moving up/down the same. If the axle 'tips', say in a corner, then the coupled wishbone tends to do goofy things trying to steer the rear end, and or bind up. These issues, combined with the complicated nature of fab, install, and packaging in the vehicle, are why you don't see to many around.