Mendelmax 2 Curved Fan Duct (one piece)

This is my version of the curved fan duct for a Mendelmax 2.0 . It is in one part for simplicity and strength.
I had problems with the standard 40mm fan duct which was a 2-piece part. It needed to be screwed together and I found that was a weakness point when I went through several mounting brackets. The parts just fell apart after heavy use at full Mendelmax 2 speeds - which is very fast!
UPDATE 17/8/2014: Version 2 part. It is now is a little bit longer (5mm) so the nozzle should be c