The usual arrangement for independent rear suspension vehicles would be to connect the diff and each wheel hub with a single shaft which has a CV joint at each end, one or both of which would have plunge.
However, there is a vertical chassis member in the way which makes this not possible and so the idea is to use two shorter shafts on each side with a third CV joint with a support bearing so the layout would be = diff - CV1 – shaft1 – support bearing – CV2 – shaft 2 - CV3 – wheel.
Each of the shorter shafts will be around 40cm. CV1 will run at a permanent angle of around 10 degrees, and CV2 will be similar but vary with suspension travel and I wonder what sort of loads the bearing will see?
A standard prop shaft rubber supported bearing assembly would be the simplest and cheapest solution and allow for some small initial misalignment of the bearing or imperfect positioning of the diff in the chassis (diff is solid mounted) and also accommodate dynamic misalignment as a result of chassis flex but I wonder if the 10-degree angles will result in a radial or axial load on the shaft rendering a rubber mounted bearing assembly unsuitable or are there no loads other than the usual torsion?
Is there an equation to calculate the radial and axial loads on shaft1?