I've had an idea to overcome the limits of the ball joint on the rear by using a large rose joint mounted upright.
It would have unlimited movement left and right - for articulation, and normal movement up and down which would be fine as up and down travel is not very important.
My question is what size rose joint would be required, is there any info on how strong the existing ball joints are?
The ball joint has a 20mm bolt protruding from it, so as long as its larger and stronger i would assume it would be all good, right?