Backafter20,

Most full-size 450 Stearmans that have four aileron conversion are in one of two configurations.

The sull size Stearman aileron hinges at four points. One the "Serv-Aero" conversion, the lower ailerons are shortened by 1/4 so that they hinge on three points. The upper ailerons are shorter still and hinge on two points. In addition, there are servo-tabs on the lower aileron to provide aerodynamic assits to the pilot. Rolling a full-size Stearman is for most people a two handed task.

Another configuration involves using the shortened three point ailerons and upper ailerons which are also three hinge points long. This configuration usually has servo tabs as well.

On both configurations, the upper ailerons are connected via an interconnect rod from the lower to power the upper. The servo tabs are mechanically actuated to move in a direction opposite the aileron.

Does your model use functional flying wires? Full-size four aileron Stearmans usually have an additional "Negative G" landing wire added from the aft cabane strut (where the upper wing meets the center section) to the aft N strut location on the lower wing.

I can't help you at all with the model since I am not familiar with the structure.

Hope this helps.

-Glenn