Rudder failure

[tp00]

I recently suffered a total failure of a wing rudder on a Paradigm 2 while sailing on a broad reach in F5, the boat was flat and planing and no helm applied at time of breakage, could anyone suggest a reason, could it have been that too much wing was applied.

[Chris Troth]

I also had an accident with my wings in similar weather. The bow was starting to head south, so I let off the rudder control. As I did so, BIG bang, and we were in the drink.
Photo of the rudder here - https://www.flickr.com/gp/23450051@N03/Sy0Z6ioE00
The stock and transom are fine. The wings themselves are solid. Did I let things off too fast? Did I generate too much 'downforce' too suddenly? Was there a weakness in the foil? Thoughts welcome!

[tp00]

https://onedrive.live.com/?cid=1341EB655C11F81F&id=1341EB655C11F81F%213858&parId=1341EB655C11F81F%211513&o=OneUp

https://onedrive.live.com/?cid=1341EB655C11F81F&id=1341EB655C11F81F%213859&parId=1341EB655C11F81F%211513&o=OneUp

Pics of failed rudder

[darebarry]

Looks like a Lack of carbon. Talking to Andy Patterson of Bloodaxe foils many years age I asked how do you know how much carbon to use. Answer was a bit less each time until it breaks then a bit more next time. The pics would seem to show a lack of the black stuff where the stress was. Remember carbon only breaks, it does not give. Thats my take.