rover 10 p2 steering

[ANDY]

The drop arm snapped on my Rover 10 (1939) luckily I wasn't driving so no harm done. A replacement arrived from Mike Evans that was an inch shorter than the one that had snapped. The replacement fitted and the ball joint to the drag link was above and just behind the axle. The old drop arm put the ball joint directly above the axle with only about half inch clearance. Even a moderate pothole would give the arm a serious wack and is almost certainly why it snapped. The replacement arm stamped up with Rover serial number but the old one wasn't, I suspect it was not a genuine part. Does anyone have any experience of this and how far behind the axle should the drag link ball joint be for adequate clearance?

Andy Wills