Helicopter question
 

The Delta hinge on a Bell 407 is backwards. In other words the pitch change induced by tail rotor flapping is in the direction where it increases flapping rather than decreasing it like on most other helicopters.

Does anyone know the real reason why it is like that? To me it seems like a very unwise design but maybe there is a good reason for it. No one I have asked has ever been able to give me a good answer.

Sounds like another good reason to stay away from the ol' Death Whisks!

Better off asking in Rotorheads - no such bias against death whisks, rather an antipathy towards things which have to land then stop rather then stop then land :)