Pitts Special S1

First flew with a 55 hp hycoming 0-145. Later flew with a 90 hp Flanklin. One of the most famous Pitts S1 was built by Curtis Pitts for Betty skelton called the Little Stinker. Early Pitts and most homebuilts where nicknamed Flatwings due to their flat bottom wings and only had ailerons on bottom wing. These were later called S1c and S1Ds. Early factory built S1S had semi symmetrical airfoil and a beefed up fuselage to take 180 hp Lycoming. Early ailerons were friese type which on later models gave way to symmetrical type which later had balanced tab type.

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