RE: mechanism for making a retractable tailhook on Hellcat?
Hi Chic: the servo idea will work if you have LOTS of room in your Avenger, or if you come up with some other arrangement to move the tailhook in and out of the fuse. But the mechanism, at least how it looks in a model, is the same for the Wildcat, Hellcat, Avenger, and possibly some more that I can't think of right now. This is a workable system, and you should be good to go with making one for your Avenger. Let us know how it goes!
I'll take more pics of flight tests when I can with the magnet arrangement on the Hellcat. I feel pretty good about this working now.
davegee