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Old Dec 15, 2012, 11:35 PM
SpadCat2000 is offline
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United States, AZ, Lake Havasu City
Joined Feb 2010
1,027 Posts
You could always draw up both flat and built up stabs so each builder could choose their preference.

I used the DB20 plans for the stab with little modification. I posted somewhere that the built up stab was quite a bit lighter, but don't remember the numbers. The ribs did get a little small, but the finished stab is still quite a bit thicker then the flat stab. I used a mixture of yellow glue and balsa dust to beef of the butt jointed sheeting to the leading edge which helped strengthen that area.

There is a small amount of dihedral added to the wing. I think I used a pencil at the center joint with the wing panels upside down. The spec is on one or both the TB or DB20 plans and will check it out. I had not glued the center ribs in until the dihedral was set, so they could be glued together without a gap.

It will be interesting to see your new and improved version of the tail section. Most of my planes in the future, except flat slow flying 3D foamies, will have a built up airfoiled stab.

I just completed a 4th Formosa ARF (2nd for myself), and it has an airfoiled stab. This one features the new EPO foam and it is a delight to work with. Much better then the old EPS versions.


PS an anhedral stab would be cool!
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