Reevers gets 3 green lights on the B-25 Mitchell

[Liberator3]

Reevers Warbirds in Australia has made significant progress this week on their B-25 Mitchell project with it the forward and mid fuselage section joined and the aircraft raised and now sitting on its own landing gear once again.

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[quemerford]

Good work: especially to get electrical power too.

[menards]

Why does the B-25 have a noticeable dihedral from the fuselage to the nacelle only to go flat for the outer wing?

[Invader26]

Here's your answer>>> ref.

"Early into B-25 production, NAA incorporated a significant redesign to the wing dihedral. The first nine aircraft had a constant-dihedral, meaning the wing had a consistent, upward angle from the fuselage to the wingtip. This design caused stability problems. "Flattening" the outer wing panels by giving them a slight anhedral angle just outboard of the engine nacelles nullified the problem, and gave the B-25 its gull wing configuration."

[Jerry O'Neill]

I believe that the B-25 "Miss Hap" was one of those first nine and had the straight dihedral wing before being modified.