I could be wrong but I think that most of the Bendix domes that are flying on B-25's today are likely reproductions and may not have the original armor plate installed. I think Riley made a bunch of reproduction domes and Aerotrader might have as well.
For our Collings Bomber camp coming up the first week of June, 2010 we hope to have the B-17 set up with the working ball turret and should have the tail turret accessible in flight (Mac permitting). If we have enough people sign up then I am hoping to have the B-17 and the B-24 up at the same time. We will see.
The plan is to have the ME-262 doing fighter attack runs while the gunners shoot back with 50 cal blanks. Someone also gets to fly along and try and chase the 262 from the back seat of the data plate P-51C Mustang. This ought to be interesting to see these two duke it out around the B-17!
Personally I can't fit into the Bendix upper turret simply because my shoulders are too wide to fit through the main casting...
I still fit in the ball turret though
I shot this video from the Collings ball turret a few years ago flying from Comcord, CA to Oregon:
http://www.youtube.com/watch?v=LvuChgh4fGg
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