Wednesday, 22 May 2013


Another unique propeller designed by Hercules is currently under construction for a unique Ryan ST-A.

Originally powered by a Menasco engine, this example has been re-engined with a de Havilland Gipsy  Major 1 engine, giving it a little more power and greater spares availability than the original Menasco engine.

This propeller design has been created by us to optimise the performance of this unusual yet very beautiful airframe and engine combination.

Below is a picture of the propeller in our CNC machine, a picture of the new propeller ready for varnishing and a picture of a Ryan ST-A, similar to the one we are producing the propeller for.

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