In memory of George Spratt, father and son, these “forgotten” figures in the history of Aviation.
|www.georgespratt.org : A fine site which recalls in particular that the success of the Wright Brothers is due in a great extent to the researches of a certain George A Spratt.|
|Freewing : Worthy successor of Wright, this manufacturer of drones with “pivoting wings”, would do well to be more clear about where his ideas came, that is, the source : George G. Spratt.|
|Spratt, Schmittle, and Freewing : Fine article illuminating the subject.
Manufacturers of industrials engines ready to fit on the Spratt 103
|Honda GX 690 Robin Subaru EH 72 HE Airmax 220|