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All-moving tail surfaces on pivoting, tubular spars

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cluttonfred

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I have always liked the way Bud Evans did the rudder on the VP-1 and VP-2, where a single aluminum tube serves as both spar and pivot for the all-moving rudder. Here is the VP-2 rudder:
51.jpg 15.jpg 53.jpg
It seems like it would be pretty straightforward to make three such surfaces to create a horizontal stabilizer as well. In fact, it might be possible to epoxy the ribs to the tube and eliminate the blocks and little bolts and make all three surfaces literally identical and interchangeable, such as on the Boulton Paul Phoenix.
boulton_phoenix_1.jpg
Any thoughts on the pros and cons of such a system applied to horizontal tails or V-tails as well as vertical ones?
 
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