Neither Doug, break marks suggest it initially cracked at half thickness across full width on the underside and had been like that for a little while. The enthusiasticly driven minor roads on the day of final parting finished off the other side. I did lightly chamfer edges of wing mount hole on replacement in case there was a stress riser there but guess it's inevitable presence of this hole makes for weakest point.
Note there is a deliberate slight bend in bracket to match the jaunty angle the shock absorber sits but this is comfortably outboard of hole/crack.
Thanks for the response Richard. So a crack from the underside obviously suggests excessive forces acting from underneath. I’m pretty sure you are aware of not over tightening the top nut on shockers. Even so, internal bump stops ought to minimise any shock load transferred to the plate.
“One of those things” perhaps but something we can all look out for.
Good one to share.
