Corse I CV joints

[hollytree]

The other thing you need to look at is the length of the dampers and their position relative to the ride height of the car?
Have you got too much travel which is leading to too much droop.
How high is the drive flange above the bottom of the chassis
How much rear camber are you running etc etc
The right hand shaft is longer so is subjected to less angle change,
As Chris says why is one spring pan higher up the damper than the other?
The shaft looks to be almost parallel to the lower wishbone so the length change through motion should not be excessive.
More information is needed to determine why it has failed

Got the suspension all correctly set up a couple of times, and a checked again on Saturday before driving up on Sunday.
Did the springs before I broke my leg. They are 600lb ones. Possibly too soft?
I have that much clearance to stop the tyres hitting the bodywork at the 10 oclock position when cornering hard.

EDIT
Looks like the outer CVs 86mm PCD are ref VKJA 8688 or PJ11N
Inners PJ89N