In the chapter on unidentified engines, the Piggott-Parr appears as one of them when it turns out that Piggott-Parr was the plane and its engine was a Vivinus car engine (see).

-On the <Flyingmachines.ru> page this machine appears with the motor and its assemblies.

The Piggott-Parr engine” (PiP-fmr)

“Piggot-Parr with engine” (PiP-fmr)

-In a version with a double contra-rotating propeller a differential box is used in the upper reduction pulley.

-We see a assembly of this device in the first photo and in the one below.

“View of the raised shaft and transmission” (PiP-fmr)

“Sketch of the Piggot-Parr apparatus” (PiP-fmr)