What is it?.........June, 2014

[Mark Braunlich]

No Lou, the engine is not inverted.   Upright V.

[Boomerang]

  OX-5 or Liberty?

  Gordon

[Balsabasher]

Stab in the dark-Curtiss Hawk type ?

Barry.

[Mark Braunlich]

Good guess Barry....yes, it is a Curtiss Hawk type but that covers a lot of airplanes so you need to get specific for the win.

[scottzepher]

I'm going to say Goshawk

[Mark Braunlich]

Not a Goshawk Scott.

[Boomerang]

  Mark,

  Would it be possible to get another wee clue?

  Cheers

  Gordon

[Mark Braunlich]

U.S. Navy

[Boomerang]

Thanks Mark

[Boomerang]

  Curtiss F6C-6 Model 34E modified for racing, with its radiator located inside the fuselage.


  https://www.flickr.com/photos/sdasmarchives/4559213105/


  Gordon

[Mark Braunlich]

Correct Gordon!
The wheel pants were added at the 1929 National Air Races in Cleveland for participation in the first Thompson race where it was flown by Lt. J. J. Clark.  In it's normal duties as a test bed for the Navy, it did not carry the pants. 

[Pete1616]

Beech staggerwing ?